/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 12:44:19,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 12:44:19,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 12:44:19,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 12:44:19,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 12:44:19,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 12:44:19,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 12:44:19,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 12:44:19,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 12:44:19,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 12:44:19,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 12:44:19,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 12:44:19,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 12:44:19,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 12:44:19,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 12:44:19,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 12:44:19,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 12:44:19,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 12:44:19,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 12:44:19,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 12:44:19,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 12:44:19,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 12:44:19,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 12:44:19,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 12:44:19,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 12:44:19,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 12:44:19,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 12:44:19,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 12:44:19,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 12:44:19,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 12:44:19,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 12:44:19,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 12:44:19,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 12:44:19,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 12:44:19,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 12:44:19,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 12:44:19,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 12:44:19,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 12:44:19,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 12:44:19,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 12:44:19,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 12:44:19,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 12:44:19,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 12:44:19,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 12:44:19,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 12:44:19,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 12:44:19,218 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 12:44:19,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 12:44:19,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 12:44:19,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 12:44:19,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 12:44:19,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 12:44:19,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 12:44:19,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 12:44:19,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 12:44:19,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 12:44:19,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 12:44:19,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 12:44:19,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 12:44:19,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 12:44:19,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 12:44:19,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 12:44:19,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 12:44:19,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 12:44:19,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 12:44:19,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 12:44:19,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 12:44:19,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 12:44:19,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 12:44:19,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 12:44:19,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 12:44:19,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 12:44:19,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-11 12:44:19,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9e82dde/58bfc1e518d94e178179e2ee4f8a2a09/FLAGb3f5d6554 [2020-10-11 12:44:20,131 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 12:44:20,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-11 12:44:20,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9e82dde/58bfc1e518d94e178179e2ee4f8a2a09/FLAGb3f5d6554 [2020-10-11 12:44:20,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9e82dde/58bfc1e518d94e178179e2ee4f8a2a09 [2020-10-11 12:44:20,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 12:44:20,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 12:44:20,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 12:44:20,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 12:44:20,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 12:44:20,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:44:20" (1/1) ... [2020-10-11 12:44:20,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17461a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:20, skipping insertion in model container [2020-10-11 12:44:20,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:44:20" (1/1) ... [2020-10-11 12:44:20,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 12:44:20,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 12:44:21,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 12:44:21,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 12:44:21,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 12:44:21,318 INFO L208 MainTranslator]: Completed translation [2020-10-11 12:44:21,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21 WrapperNode [2020-10-11 12:44:21,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 12:44:21,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 12:44:21,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 12:44:21,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 12:44:21,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 12:44:21,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 12:44:21,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 12:44:21,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 12:44:21,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... [2020-10-11 12:44:21,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 12:44:21,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 12:44:21,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 12:44:21,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 12:44:21,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 12:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 12:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 12:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 12:44:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 12:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 12:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 12:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 12:44:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 12:44:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 12:44:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 12:44:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 12:44:21,461 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 12:44:21,766 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 12:44:21,767 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-11 12:44:21,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:44:21 BoogieIcfgContainer [2020-10-11 12:44:21,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 12:44:21,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 12:44:21,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 12:44:21,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 12:44:21,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:44:20" (1/3) ... [2020-10-11 12:44:21,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e82302f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:44:21, skipping insertion in model container [2020-10-11 12:44:21,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:21" (2/3) ... [2020-10-11 12:44:21,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e82302f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:44:21, skipping insertion in model container [2020-10-11 12:44:21,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:44:21" (3/3) ... [2020-10-11 12:44:21,801 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-11 12:44:21,815 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 12:44:21,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 12:44:21,837 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 12:44:21,838 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 12:44:21,863 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,863 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,863 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,864 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,864 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,865 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,865 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,865 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,867 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,867 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,867 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,868 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,868 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,868 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,869 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,869 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,869 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,869 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,870 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,870 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,880 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,881 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,882 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,882 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,882 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,883 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,883 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,883 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,891 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,892 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,893 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,901 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,901 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,902 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,902 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,902 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,902 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:21,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 12:44:21,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 12:44:21,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 12:44:21,934 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 12:44:21,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 12:44:21,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 12:44:21,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 12:44:21,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 12:44:21,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 12:44:21,945 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 12:44:21,947 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:21,950 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:21,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:22,015 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-11 12:44:22,016 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 12:44:22,022 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-11 12:44:22,027 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-11 12:44:23,113 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-11 12:44:23,199 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-11 12:44:23,199 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-11 12:44:23,206 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-11 12:44:23,219 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-11 12:44:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-11 12:44:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 12:44:23,228 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:23,229 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-11 12:44:23,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-11 12:44:23,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:23,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664721367] [2020-10-11 12:44:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664721367] [2020-10-11 12:44:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:23,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 12:44:23,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082042664] [2020-10-11 12:44:23,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 12:44:23,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 12:44:23,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 12:44:23,503 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-11 12:44:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:23,570 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-11 12:44:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 12:44:23,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-11 12:44:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:23,585 INFO L225 Difference]: With dead ends: 83 [2020-10-11 12:44:23,585 INFO L226 Difference]: Without dead ends: 54 [2020-10-11 12:44:23,587 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-11 12:44:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-11 12:44:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-11 12:44:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-11 12:44:23,631 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-11 12:44:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:23,631 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-11 12:44:23,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 12:44:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-11 12:44:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:23,632 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:23,633 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:23,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 12:44:23,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:23,634 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-11 12:44:23,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:23,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566029619] [2020-10-11 12:44:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:23,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566029619] [2020-10-11 12:44:23,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:23,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:23,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737043069] [2020-10-11 12:44:23,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:23,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:23,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:23,808 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-11 12:44:23,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:23,886 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-11 12:44:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:23,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:23,889 INFO L225 Difference]: With dead ends: 80 [2020-10-11 12:44:23,889 INFO L226 Difference]: Without dead ends: 75 [2020-10-11 12:44:23,890 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 12:44:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-11 12:44:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-11 12:44:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-11 12:44:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-11 12:44:23,900 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-11 12:44:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:23,901 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-11 12:44:23,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-11 12:44:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:23,903 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:23,903 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:23,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 12:44:23,903 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-11 12:44:23,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:23,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357559946] [2020-10-11 12:44:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:23,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357559946] [2020-10-11 12:44:23,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:23,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:23,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911271730] [2020-10-11 12:44:23,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:23,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:23,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:23,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:23,971 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-11 12:44:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:23,996 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-11 12:44:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 12:44:23,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:23,998 INFO L225 Difference]: With dead ends: 73 [2020-10-11 12:44:23,998 INFO L226 Difference]: Without dead ends: 70 [2020-10-11 12:44:23,998 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-11 12:44:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-11 12:44:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-11 12:44:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-11 12:44:24,008 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-11 12:44:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:24,008 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-11 12:44:24,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-11 12:44:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:24,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:24,010 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:24,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 12:44:24,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-11 12:44:24,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:24,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804072951] [2020-10-11 12:44:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:24,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804072951] [2020-10-11 12:44:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:24,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856495630] [2020-10-11 12:44:24,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:24,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:24,059 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-11 12:44:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:24,119 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-11 12:44:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:24,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:24,121 INFO L225 Difference]: With dead ends: 86 [2020-10-11 12:44:24,122 INFO L226 Difference]: Without dead ends: 80 [2020-10-11 12:44:24,122 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 12:44:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-11 12:44:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-11 12:44:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-11 12:44:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-11 12:44:24,131 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-11 12:44:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:24,132 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-11 12:44:24,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-11 12:44:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:24,133 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:24,134 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:24,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 12:44:24,134 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-11 12:44:24,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:24,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351709300] [2020-10-11 12:44:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:24,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351709300] [2020-10-11 12:44:24,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946774511] [2020-10-11 12:44:24,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:24,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:24,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:24,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:24,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:24,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-11 12:44:24,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713387968] [2020-10-11 12:44:24,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 12:44:24,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:24,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 12:44:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-11 12:44:24,394 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-11 12:44:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:24,469 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-11 12:44:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:24,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-11 12:44:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:24,471 INFO L225 Difference]: With dead ends: 101 [2020-10-11 12:44:24,472 INFO L226 Difference]: Without dead ends: 96 [2020-10-11 12:44:24,472 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-11 12:44:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-11 12:44:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-11 12:44:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-11 12:44:24,480 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-11 12:44:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:24,480 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-11 12:44:24,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 12:44:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-11 12:44:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:24,481 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:24,481 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:24,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:24,696 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-11 12:44:24,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:24,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524713089] [2020-10-11 12:44:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:24,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524713089] [2020-10-11 12:44:24,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327531249] [2020-10-11 12:44:24,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:24,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:24,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:24,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:24,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584671457] [2020-10-11 12:44:24,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:24,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:24,887 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-11 12:44:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:24,916 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-11 12:44:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 12:44:24,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:24,918 INFO L225 Difference]: With dead ends: 84 [2020-10-11 12:44:24,918 INFO L226 Difference]: Without dead ends: 81 [2020-10-11 12:44:24,918 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-11 12:44:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-11 12:44:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-11 12:44:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-11 12:44:24,925 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-11 12:44:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:24,926 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-11 12:44:24,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-11 12:44:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:24,927 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:24,927 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:25,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:25,142 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:25,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-11 12:44:25,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:25,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755916734] [2020-10-11 12:44:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:25,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755916734] [2020-10-11 12:44:25,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993884491] [2020-10-11 12:44:25,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:25,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:25,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:25,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:25,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:25,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:25,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995923865] [2020-10-11 12:44:25,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:25,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:25,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:25,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:25,329 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-11 12:44:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:25,378 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-11 12:44:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:25,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:25,380 INFO L225 Difference]: With dead ends: 90 [2020-10-11 12:44:25,380 INFO L226 Difference]: Without dead ends: 87 [2020-10-11 12:44:25,380 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-11 12:44:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-11 12:44:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-11 12:44:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-11 12:44:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-11 12:44:25,388 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-11 12:44:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:25,388 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-11 12:44:25,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-11 12:44:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:25,389 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:25,389 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:25,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:25,600 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-11 12:44:25,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:25,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110623404] [2020-10-11 12:44:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:25,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110623404] [2020-10-11 12:44:25,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960106851] [2020-10-11 12:44:25,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:25,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:25,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:25,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:25,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:25,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:25,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:25,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:25,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169181818] [2020-10-11 12:44:25,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:25,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:25,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:25,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:25,813 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-11 12:44:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:25,911 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-11 12:44:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:25,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:25,913 INFO L225 Difference]: With dead ends: 99 [2020-10-11 12:44:25,913 INFO L226 Difference]: Without dead ends: 93 [2020-10-11 12:44:25,913 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-11 12:44:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-11 12:44:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-11 12:44:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-11 12:44:25,920 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-11 12:44:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:25,920 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-11 12:44:25,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-11 12:44:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:25,922 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:25,922 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:26,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:26,123 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-11 12:44:26,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:26,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035027465] [2020-10-11 12:44:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035027465] [2020-10-11 12:44:26,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:26,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:26,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726336455] [2020-10-11 12:44:26,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:26,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:26,204 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-11 12:44:26,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:26,233 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-11 12:44:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 12:44:26,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:26,235 INFO L225 Difference]: With dead ends: 92 [2020-10-11 12:44:26,235 INFO L226 Difference]: Without dead ends: 90 [2020-10-11 12:44:26,236 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-11 12:44:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-11 12:44:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-11 12:44:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-11 12:44:26,244 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-11 12:44:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-11 12:44:26,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-11 12:44:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:26,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:26,250 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:26,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 12:44:26,250 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-11 12:44:26,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:26,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652203338] [2020-10-11 12:44:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652203338] [2020-10-11 12:44:26,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:26,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033476245] [2020-10-11 12:44:26,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:26,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:26,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:26,330 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-11 12:44:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:26,383 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-11 12:44:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:26,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:26,385 INFO L225 Difference]: With dead ends: 100 [2020-10-11 12:44:26,385 INFO L226 Difference]: Without dead ends: 98 [2020-10-11 12:44:26,385 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 12:44:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-11 12:44:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-11 12:44:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-11 12:44:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-11 12:44:26,414 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-11 12:44:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:26,415 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-11 12:44:26,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-11 12:44:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:26,416 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:26,416 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:26,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 12:44:26,417 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-11 12:44:26,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:26,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919109024] [2020-10-11 12:44:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919109024] [2020-10-11 12:44:26,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:26,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:26,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499096291] [2020-10-11 12:44:26,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:26,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:26,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:26,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:26,475 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-11 12:44:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:26,542 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-11 12:44:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:26,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:26,544 INFO L225 Difference]: With dead ends: 105 [2020-10-11 12:44:26,544 INFO L226 Difference]: Without dead ends: 100 [2020-10-11 12:44:26,545 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-11 12:44:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-11 12:44:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 12:44:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-11 12:44:26,550 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-11 12:44:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:26,550 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-11 12:44:26,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-11 12:44:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:26,551 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:26,551 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:26,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 12:44:26,552 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:26,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-11 12:44:26,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:26,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036423688] [2020-10-11 12:44:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036423688] [2020-10-11 12:44:26,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:26,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:26,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339834048] [2020-10-11 12:44:26,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:26,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:26,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:26,601 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-11 12:44:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:26,674 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-11 12:44:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:26,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:26,676 INFO L225 Difference]: With dead ends: 105 [2020-10-11 12:44:26,676 INFO L226 Difference]: Without dead ends: 100 [2020-10-11 12:44:26,676 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-11 12:44:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-11 12:44:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 12:44:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-11 12:44:26,681 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-11 12:44:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:26,681 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-11 12:44:26,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-11 12:44:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:26,682 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:26,682 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:26,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 12:44:26,682 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-11 12:44:26,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:26,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879604597] [2020-10-11 12:44:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879604597] [2020-10-11 12:44:26,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676651714] [2020-10-11 12:44:26,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:26,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:26,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:26,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:26,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:26,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:26,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 12:44:26,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776373277] [2020-10-11 12:44:26,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 12:44:26,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 12:44:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:26,900 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-11 12:44:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:26,988 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-11 12:44:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:26,989 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-11 12:44:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:26,990 INFO L225 Difference]: With dead ends: 122 [2020-10-11 12:44:26,990 INFO L226 Difference]: Without dead ends: 117 [2020-10-11 12:44:26,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-11 12:44:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-11 12:44:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-11 12:44:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-11 12:44:26,997 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-11 12:44:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:26,997 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-11 12:44:26,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 12:44:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-11 12:44:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:26,998 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:26,998 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:27,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-11 12:44:27,212 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:27,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-11 12:44:27,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:27,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740328731] [2020-10-11 12:44:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:27,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740328731] [2020-10-11 12:44:27,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457369761] [2020-10-11 12:44:27,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:27,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:27,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:27,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:27,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:27,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:27,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:27,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553546006] [2020-10-11 12:44:27,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:27,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:27,439 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-11 12:44:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:27,473 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-11 12:44:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:27,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:27,475 INFO L225 Difference]: With dead ends: 108 [2020-10-11 12:44:27,475 INFO L226 Difference]: Without dead ends: 105 [2020-10-11 12:44:27,476 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-11 12:44:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-11 12:44:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-11 12:44:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-11 12:44:27,483 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-11 12:44:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:27,483 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-11 12:44:27,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-11 12:44:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:27,484 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:27,484 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:27,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:27,695 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-11 12:44:27,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:27,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026528290] [2020-10-11 12:44:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:27,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026528290] [2020-10-11 12:44:27,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181254980] [2020-10-11 12:44:27,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:27,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:27,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:27,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:27,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:27,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505667344] [2020-10-11 12:44:27,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:27,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:27,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:27,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:27,912 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-11 12:44:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:27,966 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-11 12:44:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:27,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:27,970 INFO L225 Difference]: With dead ends: 116 [2020-10-11 12:44:27,971 INFO L226 Difference]: Without dead ends: 113 [2020-10-11 12:44:27,971 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-11 12:44:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-11 12:44:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-11 12:44:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-11 12:44:27,976 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-11 12:44:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:27,977 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-11 12:44:27,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-11 12:44:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:27,978 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:27,978 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:28,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-11 12:44:28,193 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-11 12:44:28,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:28,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844930948] [2020-10-11 12:44:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:28,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844930948] [2020-10-11 12:44:28,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659876824] [2020-10-11 12:44:28,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:28,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:28,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:28,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:28,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:28,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:28,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:28,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595461549] [2020-10-11 12:44:28,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:28,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:28,427 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-11 12:44:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:28,535 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-11 12:44:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:28,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:28,537 INFO L225 Difference]: With dead ends: 115 [2020-10-11 12:44:28,538 INFO L226 Difference]: Without dead ends: 112 [2020-10-11 12:44:28,538 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-11 12:44:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-11 12:44:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-11 12:44:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-11 12:44:28,542 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-11 12:44:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:28,543 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-11 12:44:28,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-11 12:44:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:28,544 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:28,544 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:28,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-11 12:44:28,754 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:28,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-11 12:44:28,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:28,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093697084] [2020-10-11 12:44:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:28,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093697084] [2020-10-11 12:44:28,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930486507] [2020-10-11 12:44:28,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:28,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:28,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:28,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:28,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:28,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:28,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:28,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620446091] [2020-10-11 12:44:28,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:28,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:28,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:28,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:28,929 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-11 12:44:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:29,049 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-11 12:44:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:29,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:29,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:29,050 INFO L225 Difference]: With dead ends: 124 [2020-10-11 12:44:29,050 INFO L226 Difference]: Without dead ends: 118 [2020-10-11 12:44:29,051 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:44:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-11 12:44:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-11 12:44:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-11 12:44:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-11 12:44:29,055 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-11 12:44:29,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:29,055 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-11 12:44:29,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-11 12:44:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:29,056 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:29,056 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:29,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-11 12:44:29,267 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:29,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-11 12:44:29,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:29,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991578067] [2020-10-11 12:44:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:29,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991578067] [2020-10-11 12:44:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708798431] [2020-10-11 12:44:29,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:29,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:29,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:29,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:29,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:29,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:29,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:29,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499860891] [2020-10-11 12:44:29,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:29,477 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-11 12:44:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:29,519 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-11 12:44:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:29,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:29,520 INFO L225 Difference]: With dead ends: 113 [2020-10-11 12:44:29,521 INFO L226 Difference]: Without dead ends: 111 [2020-10-11 12:44:29,521 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-11 12:44:29,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-11 12:44:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-11 12:44:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-11 12:44:29,525 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-11 12:44:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:29,526 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-11 12:44:29,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-11 12:44:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:29,526 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:29,527 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:29,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 12:44:29,738 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-11 12:44:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:29,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688295856] [2020-10-11 12:44:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:29,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688295856] [2020-10-11 12:44:29,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790011787] [2020-10-11 12:44:29,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:29,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:29,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:29,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:29,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:29,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:29,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432259237] [2020-10-11 12:44:29,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:29,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:29,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:29,908 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-11 12:44:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:29,989 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-11 12:44:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:29,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:29,991 INFO L225 Difference]: With dead ends: 118 [2020-10-11 12:44:29,991 INFO L226 Difference]: Without dead ends: 116 [2020-10-11 12:44:29,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-11 12:44:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-11 12:44:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-11 12:44:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-11 12:44:29,995 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-11 12:44:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:29,996 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-11 12:44:29,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-11 12:44:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:29,996 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:29,997 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:30,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:30,208 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-11 12:44:30,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:30,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450550040] [2020-10-11 12:44:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:30,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450550040] [2020-10-11 12:44:30,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250746284] [2020-10-11 12:44:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:30,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:30,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:30,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:30,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:30,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656302840] [2020-10-11 12:44:30,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:30,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:30,434 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-11 12:44:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:30,510 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-11 12:44:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:30,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:30,512 INFO L225 Difference]: With dead ends: 119 [2020-10-11 12:44:30,512 INFO L226 Difference]: Without dead ends: 117 [2020-10-11 12:44:30,513 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-11 12:44:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-11 12:44:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-11 12:44:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-11 12:44:30,518 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-11 12:44:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:30,518 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-11 12:44:30,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-11 12:44:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:30,519 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:30,519 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:30,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:30,732 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:30,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-11 12:44:30,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:30,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128659558] [2020-10-11 12:44:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:30,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128659558] [2020-10-11 12:44:30,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119113510] [2020-10-11 12:44:30,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:30,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:30,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:30,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:30,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385234831] [2020-10-11 12:44:30,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:30,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:30,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:30,999 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-11 12:44:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,064 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-11 12:44:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:31,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,066 INFO L225 Difference]: With dead ends: 122 [2020-10-11 12:44:31,066 INFO L226 Difference]: Without dead ends: 120 [2020-10-11 12:44:31,067 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-11 12:44:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-11 12:44:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-11 12:44:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-11 12:44:31,073 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-11 12:44:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,073 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-11 12:44:31,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-11 12:44:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:31,074 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,074 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-11 12:44:31,275 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-11 12:44:31,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060278182] [2020-10-11 12:44:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060278182] [2020-10-11 12:44:31,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022117394] [2020-10-11 12:44:31,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:31,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:31,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:31,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:31,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:31,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482273309] [2020-10-11 12:44:31,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:31,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:31,452 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,537 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-11 12:44:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:31,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,539 INFO L225 Difference]: With dead ends: 123 [2020-10-11 12:44:31,539 INFO L226 Difference]: Without dead ends: 121 [2020-10-11 12:44:31,539 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-11 12:44:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-11 12:44:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-11 12:44:31,543 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-11 12:44:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,544 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-11 12:44:31,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-11 12:44:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:31,544 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,545 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:31,754 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-11 12:44:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735968555] [2020-10-11 12:44:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735968555] [2020-10-11 12:44:31,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208639325] [2020-10-11 12:44:31,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:31,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:31,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:31,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:31,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:31,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:31,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753542583] [2020-10-11 12:44:31,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:31,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:31,964 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-11 12:44:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:32,043 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-11 12:44:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:32,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:32,045 INFO L225 Difference]: With dead ends: 123 [2020-10-11 12:44:32,045 INFO L226 Difference]: Without dead ends: 121 [2020-10-11 12:44:32,045 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-11 12:44:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-11 12:44:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-11 12:44:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-11 12:44:32,051 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-11 12:44:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:32,051 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-11 12:44:32,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-11 12:44:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:32,052 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:32,052 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:32,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-11 12:44:32,263 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-11 12:44:32,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424117526] [2020-10-11 12:44:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424117526] [2020-10-11 12:44:32,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813440846] [2020-10-11 12:44:32,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:32,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:32,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:32,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:32,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:32,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:32,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:32,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299867938] [2020-10-11 12:44:32,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:32,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:32,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:32,470 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-11 12:44:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:32,640 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-11 12:44:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:32,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:32,642 INFO L225 Difference]: With dead ends: 133 [2020-10-11 12:44:32,642 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 12:44:32,643 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 12:44:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-11 12:44:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-11 12:44:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-11 12:44:32,646 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-11 12:44:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:32,647 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-11 12:44:32,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-11 12:44:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:32,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:32,648 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:32,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:32,848 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-11 12:44:32,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:32,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141516480] [2020-10-11 12:44:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141516480] [2020-10-11 12:44:32,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382411710] [2020-10-11 12:44:32,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:32,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:32,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:33,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:33,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722475370] [2020-10-11 12:44:33,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:33,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:33,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:33,019 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,149 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-11 12:44:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:33,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,151 INFO L225 Difference]: With dead ends: 127 [2020-10-11 12:44:33,151 INFO L226 Difference]: Without dead ends: 125 [2020-10-11 12:44:33,152 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:44:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-11 12:44:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-11 12:44:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-11 12:44:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-11 12:44:33,156 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-11 12:44:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,156 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-11 12:44:33,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-11 12:44:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:33,157 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,157 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-11 12:44:33,358 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-11 12:44:33,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147008343] [2020-10-11 12:44:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147008343] [2020-10-11 12:44:33,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402255181] [2020-10-11 12:44:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:33,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:33,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:33,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:33,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342079429] [2020-10-11 12:44:33,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:33,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:33,529 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-11 12:44:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,761 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-11 12:44:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:44:33,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,763 INFO L225 Difference]: With dead ends: 141 [2020-10-11 12:44:33,763 INFO L226 Difference]: Without dead ends: 136 [2020-10-11 12:44:33,764 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:44:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-11 12:44:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-11 12:44:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-11 12:44:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-11 12:44:33,768 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-11 12:44:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,768 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-11 12:44:33,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-11 12:44:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:33,769 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,769 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-11 12:44:33,979 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-11 12:44:33,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273086777] [2020-10-11 12:44:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273086777] [2020-10-11 12:44:34,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387737418] [2020-10-11 12:44:34,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:34,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:34,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:34,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:34,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:34,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:34,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:34,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582322669] [2020-10-11 12:44:34,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:34,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:34,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:34,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:34,164 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-11 12:44:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:34,299 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-11 12:44:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:34,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:34,301 INFO L225 Difference]: With dead ends: 136 [2020-10-11 12:44:34,301 INFO L226 Difference]: Without dead ends: 131 [2020-10-11 12:44:34,301 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-11 12:44:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-11 12:44:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-11 12:44:34,305 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-11 12:44:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:34,305 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-11 12:44:34,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-11 12:44:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:34,306 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:34,306 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:34,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-11 12:44:34,517 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-11 12:44:34,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:34,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952835321] [2020-10-11 12:44:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952835321] [2020-10-11 12:44:34,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248077401] [2020-10-11 12:44:34,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:34,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:34,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:34,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:34,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:34,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:34,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138195265] [2020-10-11 12:44:34,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:34,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:34,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:34,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:34,690 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-11 12:44:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:34,785 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-11 12:44:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:34,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:34,789 INFO L225 Difference]: With dead ends: 130 [2020-10-11 12:44:34,789 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 12:44:34,790 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 12:44:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-11 12:44:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-11 12:44:34,793 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-11 12:44:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:34,794 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-11 12:44:34,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-11 12:44:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:34,795 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:34,795 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:34,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-11 12:44:34,995 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:34,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-11 12:44:34,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:34,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767619700] [2020-10-11 12:44:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767619700] [2020-10-11 12:44:35,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247860664] [2020-10-11 12:44:35,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:35,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:35,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:35,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:35,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:35,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281552730] [2020-10-11 12:44:35,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:35,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:35,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:35,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:35,178 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-11 12:44:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:35,305 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-11 12:44:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:35,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:35,307 INFO L225 Difference]: With dead ends: 131 [2020-10-11 12:44:35,307 INFO L226 Difference]: Without dead ends: 129 [2020-10-11 12:44:35,307 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-11 12:44:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-11 12:44:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-11 12:44:35,311 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-11 12:44:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:35,311 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-11 12:44:35,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-11 12:44:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:35,312 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:35,312 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:35,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-11 12:44:35,520 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:35,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-11 12:44:35,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:35,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634278409] [2020-10-11 12:44:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634278409] [2020-10-11 12:44:35,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629127049] [2020-10-11 12:44:35,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:35,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:35,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:35,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:35,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:35,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:35,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:35,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418317571] [2020-10-11 12:44:35,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:35,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:35,669 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:35,788 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-11 12:44:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:35,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:35,790 INFO L225 Difference]: With dead ends: 131 [2020-10-11 12:44:35,790 INFO L226 Difference]: Without dead ends: 126 [2020-10-11 12:44:35,791 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-11 12:44:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-11 12:44:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-11 12:44:35,794 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-11 12:44:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:35,795 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-11 12:44:35,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-11 12:44:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:35,795 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:35,795 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:36,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:36,005 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-11 12:44:36,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:36,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554613058] [2020-10-11 12:44:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554613058] [2020-10-11 12:44:36,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494733295] [2020-10-11 12:44:36,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:36,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:36,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:36,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:36,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:36,148 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:36,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:36,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925920227] [2020-10-11 12:44:36,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:36,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:36,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:36,170 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:36,379 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-11 12:44:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:44:36,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:36,381 INFO L225 Difference]: With dead ends: 145 [2020-10-11 12:44:36,382 INFO L226 Difference]: Without dead ends: 140 [2020-10-11 12:44:36,382 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:44:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-11 12:44:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-11 12:44:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-11 12:44:36,387 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-11 12:44:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:36,387 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-11 12:44:36,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-11 12:44:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:36,388 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:36,388 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:36,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-11 12:44:36,600 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:36,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-11 12:44:36,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:36,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040541311] [2020-10-11 12:44:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040541311] [2020-10-11 12:44:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538798119] [2020-10-11 12:44:36,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:36,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:36,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:36,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:36,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:36,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429767438] [2020-10-11 12:44:36,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:36,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:36,760 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-11 12:44:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:36,931 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-11 12:44:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:36,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:36,934 INFO L225 Difference]: With dead ends: 135 [2020-10-11 12:44:36,934 INFO L226 Difference]: Without dead ends: 130 [2020-10-11 12:44:36,935 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-11 12:44:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-11 12:44:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-11 12:44:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-11 12:44:36,938 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-11 12:44:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:36,938 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-11 12:44:36,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-11 12:44:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:36,939 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:36,939 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:37,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:37,150 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:37,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-11 12:44:37,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:37,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15940707] [2020-10-11 12:44:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15940707] [2020-10-11 12:44:37,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517547750] [2020-10-11 12:44:37,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:37,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:37,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:37,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:37,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:37,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:37,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-11 12:44:37,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487705528] [2020-10-11 12:44:37,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 12:44:37,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 12:44:37,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:37,359 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-11 12:44:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:37,476 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-11 12:44:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:37,477 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-11 12:44:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:37,478 INFO L225 Difference]: With dead ends: 143 [2020-10-11 12:44:37,478 INFO L226 Difference]: Without dead ends: 138 [2020-10-11 12:44:37,479 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:44:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-11 12:44:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-11 12:44:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-11 12:44:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-11 12:44:37,483 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-11 12:44:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:37,483 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-11 12:44:37,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 12:44:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-11 12:44:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:37,484 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:37,484 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:37,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-11 12:44:37,693 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-11 12:44:37,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:37,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533242184] [2020-10-11 12:44:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533242184] [2020-10-11 12:44:37,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431014991] [2020-10-11 12:44:37,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:37,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:37,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:37,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:37,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:37,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:37,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360027168] [2020-10-11 12:44:37,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:37,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:37,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:37,921 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-11 12:44:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:37,961 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-11 12:44:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:37,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:37,963 INFO L225 Difference]: With dead ends: 132 [2020-10-11 12:44:37,963 INFO L226 Difference]: Without dead ends: 129 [2020-10-11 12:44:37,963 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-11 12:44:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-11 12:44:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 12:44:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-11 12:44:37,967 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-11 12:44:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:37,967 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-11 12:44:37,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-11 12:44:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:37,968 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:37,968 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:38,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-11 12:44:38,169 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-11 12:44:38,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809542659] [2020-10-11 12:44:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809542659] [2020-10-11 12:44:38,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077801176] [2020-10-11 12:44:38,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:38,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:44:38,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:38,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:38,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:38,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:38,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410244862] [2020-10-11 12:44:38,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:38,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:38,394 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-11 12:44:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:38,459 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-11 12:44:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:38,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:38,461 INFO L225 Difference]: With dead ends: 143 [2020-10-11 12:44:38,461 INFO L226 Difference]: Without dead ends: 140 [2020-10-11 12:44:38,461 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-11 12:44:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-11 12:44:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 12:44:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-11 12:44:38,466 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-11 12:44:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:38,466 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-11 12:44:38,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:38,466 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-11 12:44:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:38,469 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:38,469 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:38,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-11 12:44:38,680 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-11 12:44:38,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:38,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948682600] [2020-10-11 12:44:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948682600] [2020-10-11 12:44:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536004266] [2020-10-11 12:44:38,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:38,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:44:38,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:38,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:38,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:38,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:38,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009414121] [2020-10-11 12:44:38,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:38,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:38,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:38,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:38,910 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-11 12:44:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:38,989 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-11 12:44:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:38,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:38,990 INFO L225 Difference]: With dead ends: 142 [2020-10-11 12:44:38,990 INFO L226 Difference]: Without dead ends: 139 [2020-10-11 12:44:38,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:44:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-11 12:44:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-11 12:44:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-11 12:44:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-11 12:44:39,014 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-11 12:44:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:39,014 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-11 12:44:39,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-11 12:44:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:39,015 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:39,015 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:39,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-11 12:44:39,224 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-11 12:44:39,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:39,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156725633] [2020-10-11 12:44:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156725633] [2020-10-11 12:44:39,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303257409] [2020-10-11 12:44:39,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:39,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:39,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:39,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:39,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5256266] [2020-10-11 12:44:39,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:39,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:39,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:39,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:39,424 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-11 12:44:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:39,520 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-11 12:44:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:39,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:39,522 INFO L225 Difference]: With dead ends: 141 [2020-10-11 12:44:39,522 INFO L226 Difference]: Without dead ends: 138 [2020-10-11 12:44:39,522 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-11 12:44:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-11 12:44:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-11 12:44:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-11 12:44:39,525 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-11 12:44:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:39,526 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-11 12:44:39,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-11 12:44:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:39,526 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:39,527 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:39,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-11 12:44:39,727 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:39,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-11 12:44:39,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:39,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686209202] [2020-10-11 12:44:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686209202] [2020-10-11 12:44:39,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321974823] [2020-10-11 12:44:39,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:39,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:39,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:39,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:39,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:39,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:39,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380709151] [2020-10-11 12:44:39,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:39,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:39,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:39,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:39,910 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-11 12:44:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:40,057 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-11 12:44:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:40,058 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:40,059 INFO L225 Difference]: With dead ends: 150 [2020-10-11 12:44:40,060 INFO L226 Difference]: Without dead ends: 144 [2020-10-11 12:44:40,060 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-11 12:44:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-11 12:44:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-11 12:44:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-11 12:44:40,063 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-11 12:44:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:40,064 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-11 12:44:40,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-11 12:44:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:40,064 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:40,065 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:40,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:40,276 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-11 12:44:40,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143589735] [2020-10-11 12:44:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143589735] [2020-10-11 12:44:40,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430708840] [2020-10-11 12:44:40,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:40,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:40,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:40,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:40,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430972836] [2020-10-11 12:44:40,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:40,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:40,475 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-11 12:44:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:40,522 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-11 12:44:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:40,522 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:40,524 INFO L225 Difference]: With dead ends: 138 [2020-10-11 12:44:40,524 INFO L226 Difference]: Without dead ends: 136 [2020-10-11 12:44:40,524 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-11 12:44:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-11 12:44:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-11 12:44:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-11 12:44:40,527 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-11 12:44:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:40,527 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-11 12:44:40,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-11 12:44:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:40,528 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:40,528 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:40,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-11 12:44:40,737 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-11 12:44:40,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:40,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16485566] [2020-10-11 12:44:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16485566] [2020-10-11 12:44:40,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103727863] [2020-10-11 12:44:40,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:40,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:40,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:40,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:40,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:40,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537167820] [2020-10-11 12:44:40,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:40,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:40,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:40,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:40,960 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-11 12:44:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:41,067 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-11 12:44:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:41,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:41,069 INFO L225 Difference]: With dead ends: 145 [2020-10-11 12:44:41,069 INFO L226 Difference]: Without dead ends: 143 [2020-10-11 12:44:41,069 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-11 12:44:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-11 12:44:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-11 12:44:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-11 12:44:41,073 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-11 12:44:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-11 12:44:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-11 12:44:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:41,074 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:41,074 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:41,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-11 12:44:41,275 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-11 12:44:41,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:41,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839754760] [2020-10-11 12:44:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839754760] [2020-10-11 12:44:41,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782798713] [2020-10-11 12:44:41,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:41,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:41,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:41,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:41,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:41,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:41,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999681076] [2020-10-11 12:44:41,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:41,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:41,470 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-11 12:44:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:41,598 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-11 12:44:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:41,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:41,600 INFO L225 Difference]: With dead ends: 150 [2020-10-11 12:44:41,600 INFO L226 Difference]: Without dead ends: 148 [2020-10-11 12:44:41,600 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-11 12:44:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-11 12:44:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-11 12:44:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-11 12:44:41,606 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-11 12:44:41,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:41,607 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-11 12:44:41,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-11 12:44:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:41,607 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:41,607 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:41,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:41,817 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-11 12:44:41,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:41,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101521065] [2020-10-11 12:44:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101521065] [2020-10-11 12:44:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960398148] [2020-10-11 12:44:41,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:41,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:44:41,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:42,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:42,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390017623] [2020-10-11 12:44:42,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:42,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:42,067 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-11 12:44:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:42,181 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-11 12:44:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:42,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:42,183 INFO L225 Difference]: With dead ends: 148 [2020-10-11 12:44:42,183 INFO L226 Difference]: Without dead ends: 146 [2020-10-11 12:44:42,183 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-11 12:44:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-11 12:44:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-11 12:44:42,187 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-11 12:44:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:42,189 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-11 12:44:42,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-11 12:44:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:42,190 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:42,190 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:42,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-11 12:44:42,401 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-11 12:44:42,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:42,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73332928] [2020-10-11 12:44:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73332928] [2020-10-11 12:44:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933342671] [2020-10-11 12:44:42,476 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:42,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:42,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:42,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995154496] [2020-10-11 12:44:42,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:42,623 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-11 12:44:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:42,746 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-11 12:44:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:42,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:42,748 INFO L225 Difference]: With dead ends: 149 [2020-10-11 12:44:42,748 INFO L226 Difference]: Without dead ends: 147 [2020-10-11 12:44:42,749 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-11 12:44:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-11 12:44:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-11 12:44:42,753 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-11 12:44:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:42,753 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-11 12:44:42,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-11 12:44:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:42,754 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:42,754 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:42,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:42,965 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-11 12:44:42,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:42,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83063587] [2020-10-11 12:44:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83063587] [2020-10-11 12:44:43,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75888095] [2020-10-11 12:44:43,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:43,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:43,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962214097] [2020-10-11 12:44:43,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:43,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:43,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:43,253 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-11 12:44:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:43,331 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-11 12:44:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:43,332 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:43,333 INFO L225 Difference]: With dead ends: 152 [2020-10-11 12:44:43,334 INFO L226 Difference]: Without dead ends: 150 [2020-10-11 12:44:43,334 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-11 12:44:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-11 12:44:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:44:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-11 12:44:43,340 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-11 12:44:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:43,340 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-11 12:44:43,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-11 12:44:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:43,341 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:43,342 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:43,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-11 12:44:43,554 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-11 12:44:43,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:43,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055801642] [2020-10-11 12:44:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055801642] [2020-10-11 12:44:43,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227338251] [2020-10-11 12:44:43,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:43,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:43,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:43,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:43,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:43,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:43,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672945922] [2020-10-11 12:44:43,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:43,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:43,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:43,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:43,795 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-11 12:44:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:43,934 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-11 12:44:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:43,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:43,936 INFO L225 Difference]: With dead ends: 153 [2020-10-11 12:44:43,936 INFO L226 Difference]: Without dead ends: 151 [2020-10-11 12:44:43,937 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-11 12:44:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-11 12:44:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-11 12:44:43,941 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-11 12:44:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:43,941 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-11 12:44:43,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-11 12:44:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:43,942 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:43,942 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:44,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-11 12:44:44,153 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:44,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-11 12:44:44,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:44,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303355469] [2020-10-11 12:44:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303355469] [2020-10-11 12:44:44,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906206441] [2020-10-11 12:44:44,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:44,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:44,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:44,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:44,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199045038] [2020-10-11 12:44:44,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:44,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:44,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:44,360 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-11 12:44:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:44,502 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:44:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:44,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:44,504 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:44:44,504 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 12:44:44,505 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 12:44:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-11 12:44:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-11 12:44:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-11 12:44:44,510 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-11 12:44:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:44,511 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-11 12:44:44,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-11 12:44:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:44,511 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:44,512 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:44,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-11 12:44:44,723 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-11 12:44:44,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:44,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855332709] [2020-10-11 12:44:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855332709] [2020-10-11 12:44:44,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936056873] [2020-10-11 12:44:44,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:44,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:44,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:44,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:44,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:44,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:44,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053628926] [2020-10-11 12:44:44,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:44,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:44,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:44,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:44,942 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-11 12:44:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:45,049 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-11 12:44:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:45,049 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:45,051 INFO L225 Difference]: With dead ends: 148 [2020-10-11 12:44:45,051 INFO L226 Difference]: Without dead ends: 146 [2020-10-11 12:44:45,051 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:44:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-11 12:44:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-11 12:44:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-11 12:44:45,055 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-11 12:44:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:45,056 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-11 12:44:45,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-11 12:44:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:45,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:45,057 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:45,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-11 12:44:45,267 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:45,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-11 12:44:45,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:45,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087163376] [2020-10-11 12:44:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087163376] [2020-10-11 12:44:45,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766574218] [2020-10-11 12:44:45,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:45,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:45,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:45,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:45,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:45,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508804084] [2020-10-11 12:44:45,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:45,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:45,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:45,465 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-11 12:44:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:45,614 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-11 12:44:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:45,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:45,616 INFO L225 Difference]: With dead ends: 157 [2020-10-11 12:44:45,616 INFO L226 Difference]: Without dead ends: 155 [2020-10-11 12:44:45,617 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-11 12:44:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-11 12:44:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-11 12:44:45,620 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-11 12:44:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:45,621 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-11 12:44:45,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-11 12:44:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:45,621 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:45,622 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:45,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:45,828 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-11 12:44:45,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:45,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947278076] [2020-10-11 12:44:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947278076] [2020-10-11 12:44:45,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934577596] [2020-10-11 12:44:45,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:45,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:45,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:45,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:44:45,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:45,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-11 12:44:45,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456063457] [2020-10-11 12:44:45,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:45,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:45,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:45,966 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-11 12:44:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:46,051 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-11 12:44:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:46,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-11 12:44:46,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:46,053 INFO L225 Difference]: With dead ends: 149 [2020-10-11 12:44:46,053 INFO L226 Difference]: Without dead ends: 147 [2020-10-11 12:44:46,053 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-11 12:44:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-11 12:44:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:46,057 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:46,057 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:46,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:46,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:46,058 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:46,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-11 12:44:46,258 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-11 12:44:46,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:46,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137010291] [2020-10-11 12:44:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137010291] [2020-10-11 12:44:46,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701142133] [2020-10-11 12:44:46,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:46,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:46,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:46,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:46,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120743002] [2020-10-11 12:44:46,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:46,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:46,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:46,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:46,481 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:46,718 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-11 12:44:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:46,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:46,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:46,720 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:44:46,720 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:44:46,720 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:44:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:44:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-11 12:44:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:44:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-11 12:44:46,725 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-11 12:44:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:46,725 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-11 12:44:46,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-11 12:44:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:46,726 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:46,726 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:46,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-11 12:44:46,929 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-11 12:44:46,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:46,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431216191] [2020-10-11 12:44:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431216191] [2020-10-11 12:44:46,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210603534] [2020-10-11 12:44:46,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:47,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:47,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:47,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:47,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:47,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:47,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219503432] [2020-10-11 12:44:47,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:47,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:47,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:47,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:47,164 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-11 12:44:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:47,406 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:44:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:47,407 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:47,410 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:44:47,410 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 12:44:47,410 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:44:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 12:44:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-11 12:44:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:47,417 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:47,418 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:47,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:47,420 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:47,420 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:47,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:47,635 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:47,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-11 12:44:47,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:47,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479893890] [2020-10-11 12:44:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479893890] [2020-10-11 12:44:47,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978550092] [2020-10-11 12:44:47,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:47,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:47,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:47,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:47,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:47,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:47,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:47,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109128761] [2020-10-11 12:44:47,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:47,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:47,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:47,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:47,904 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:48,262 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-11 12:44:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:44:48,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:48,264 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:44:48,264 INFO L226 Difference]: Without dead ends: 171 [2020-10-11 12:44:48,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:44:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-11 12:44:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-11 12:44:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:48,269 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:48,269 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:48,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:48,270 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:48,270 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:48,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-11 12:44:48,482 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:48,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:48,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-11 12:44:48,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:48,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308629905] [2020-10-11 12:44:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308629905] [2020-10-11 12:44:48,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618666500] [2020-10-11 12:44:48,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:48,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:48,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:48,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:48,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:48,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:48,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143565113] [2020-10-11 12:44:48,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:48,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:48,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:48,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:48,696 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:48,939 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-11 12:44:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:48,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:48,941 INFO L225 Difference]: With dead ends: 166 [2020-10-11 12:44:48,942 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:44:48,942 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:44:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:44:48,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-11 12:44:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-11 12:44:48,947 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-11 12:44:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:48,948 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-11 12:44:48,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-11 12:44:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:48,948 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:48,949 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:49,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:49,159 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:49,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:49,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-11 12:44:49,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:49,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062337171] [2020-10-11 12:44:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062337171] [2020-10-11 12:44:49,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008482434] [2020-10-11 12:44:49,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:49,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:49,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:49,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:49,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:49,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:49,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353184530] [2020-10-11 12:44:49,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:49,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:49,339 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-11 12:44:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:49,517 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-11 12:44:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:49,518 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:49,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:49,519 INFO L225 Difference]: With dead ends: 163 [2020-10-11 12:44:49,519 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:44:49,520 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:44:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:44:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-11 12:44:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-11 12:44:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-11 12:44:49,524 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-11 12:44:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:49,524 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-11 12:44:49,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-11 12:44:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:49,525 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:49,525 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:49,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-11 12:44:49,726 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:49,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-11 12:44:49,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:49,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329269753] [2020-10-11 12:44:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329269753] [2020-10-11 12:44:49,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198463447] [2020-10-11 12:44:49,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:49,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:49,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:49,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:49,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:49,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:49,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586272501] [2020-10-11 12:44:49,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:49,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:49,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:49,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:49,931 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-11 12:44:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:50,185 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-11 12:44:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:44:50,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:50,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:50,187 INFO L225 Difference]: With dead ends: 170 [2020-10-11 12:44:50,187 INFO L226 Difference]: Without dead ends: 168 [2020-10-11 12:44:50,187 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:44:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-11 12:44:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-11 12:44:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-11 12:44:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-11 12:44:50,191 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-11 12:44:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:50,191 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-11 12:44:50,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-11 12:44:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:50,192 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:50,192 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:50,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:50,403 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:50,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-11 12:44:50,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:50,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969517948] [2020-10-11 12:44:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:50,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969517948] [2020-10-11 12:44:50,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798615375] [2020-10-11 12:44:50,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:50,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:50,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:50,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:50,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:50,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:50,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785096856] [2020-10-11 12:44:50,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:50,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:50,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:50,586 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-11 12:44:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:50,888 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-11 12:44:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:50,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:50,890 INFO L225 Difference]: With dead ends: 177 [2020-10-11 12:44:50,890 INFO L226 Difference]: Without dead ends: 172 [2020-10-11 12:44:50,891 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:44:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-11 12:44:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-11 12:44:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-11 12:44:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-11 12:44:50,896 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-11 12:44:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:50,896 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-11 12:44:50,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-11 12:44:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:50,897 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:50,897 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:51,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-11 12:44:51,108 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:51,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-11 12:44:51,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:51,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615130201] [2020-10-11 12:44:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615130201] [2020-10-11 12:44:51,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024626305] [2020-10-11 12:44:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:51,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:51,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:51,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:51,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:51,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:51,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893626702] [2020-10-11 12:44:51,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:51,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:51,301 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-11 12:44:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:51,686 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-11 12:44:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:44:51,686 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:51,688 INFO L225 Difference]: With dead ends: 190 [2020-10-11 12:44:51,688 INFO L226 Difference]: Without dead ends: 182 [2020-10-11 12:44:51,688 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:44:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-11 12:44:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-11 12:44:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-11 12:44:51,692 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-11 12:44:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:51,692 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-11 12:44:51,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-11 12:44:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:51,693 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:51,693 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:51,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-11 12:44:51,893 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-11 12:44:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:51,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753135978] [2020-10-11 12:44:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753135978] [2020-10-11 12:44:51,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374358606] [2020-10-11 12:44:51,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:51,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:44:51,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:51,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:51,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:52,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:52,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:52,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609599687] [2020-10-11 12:44:52,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:52,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:52,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:52,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:52,083 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-11 12:44:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:52,426 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-11 12:44:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:52,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:52,428 INFO L225 Difference]: With dead ends: 180 [2020-10-11 12:44:52,428 INFO L226 Difference]: Without dead ends: 175 [2020-10-11 12:44:52,429 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:44:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-11 12:44:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-11 12:44:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-11 12:44:52,433 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-11 12:44:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:52,433 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-11 12:44:52,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-11 12:44:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:52,434 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:52,434 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:52,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-11 12:44:52,640 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:52,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-11 12:44:52,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:52,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152743107] [2020-10-11 12:44:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152743107] [2020-10-11 12:44:52,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265985293] [2020-10-11 12:44:52,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:52,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:52,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:52,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:52,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097844694] [2020-10-11 12:44:52,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:52,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:52,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:52,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:52,839 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-11 12:44:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:52,983 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-11 12:44:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:52,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:52,985 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:44:52,986 INFO L226 Difference]: Without dead ends: 162 [2020-10-11 12:44:52,986 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-11 12:44:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-11 12:44:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-11 12:44:52,989 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-11 12:44:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:52,990 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-11 12:44:52,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-11 12:44:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:52,991 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:52,991 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:53,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-11 12:44:53,201 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-11 12:44:53,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:53,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455406936] [2020-10-11 12:44:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455406936] [2020-10-11 12:44:53,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416370345] [2020-10-11 12:44:53,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:53,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:53,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:53,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:53,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:53,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:53,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923132064] [2020-10-11 12:44:53,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:53,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:53,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:53,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:53,397 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-11 12:44:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:53,553 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-11 12:44:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:53,554 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:53,555 INFO L225 Difference]: With dead ends: 161 [2020-10-11 12:44:53,555 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:44:53,555 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:44:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-11 12:44:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-11 12:44:53,558 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-11 12:44:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:53,558 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-11 12:44:53,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-11 12:44:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:53,559 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:53,559 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:53,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-11 12:44:53,768 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:53,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-11 12:44:53,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:53,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812163659] [2020-10-11 12:44:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812163659] [2020-10-11 12:44:53,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345170683] [2020-10-11 12:44:53,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:53,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:44:53,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:53,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:53,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:53,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:53,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882500014] [2020-10-11 12:44:53,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:53,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:53,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:53,963 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-11 12:44:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:54,158 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-11 12:44:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:44:54,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:54,160 INFO L225 Difference]: With dead ends: 165 [2020-10-11 12:44:54,160 INFO L226 Difference]: Without dead ends: 163 [2020-10-11 12:44:54,161 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:44:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-11 12:44:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-11 12:44:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-11 12:44:54,164 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-11 12:44:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:54,165 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-11 12:44:54,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-11 12:44:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:54,165 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:54,165 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:54,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-11 12:44:54,368 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:54,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-11 12:44:54,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:54,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776171087] [2020-10-11 12:44:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776171087] [2020-10-11 12:44:54,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630991688] [2020-10-11 12:44:54,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:54,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:54,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:54,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:54,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739564292] [2020-10-11 12:44:54,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:54,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:54,577 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-11 12:44:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:54,784 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-11 12:44:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:44:54,785 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:54,786 INFO L225 Difference]: With dead ends: 167 [2020-10-11 12:44:54,786 INFO L226 Difference]: Without dead ends: 165 [2020-10-11 12:44:54,786 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:44:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-11 12:44:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-11 12:44:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-11 12:44:54,790 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-11 12:44:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:54,791 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-11 12:44:54,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-11 12:44:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:54,791 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:54,791 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:55,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:55,001 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-11 12:44:55,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:55,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305681447] [2020-10-11 12:44:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305681447] [2020-10-11 12:44:55,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164289837] [2020-10-11 12:44:55,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:55,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:55,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:55,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:55,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:55,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:55,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129016045] [2020-10-11 12:44:55,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:55,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:55,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:55,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:55,185 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-11 12:44:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:55,444 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-11 12:44:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:44:55,445 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:55,446 INFO L225 Difference]: With dead ends: 168 [2020-10-11 12:44:55,446 INFO L226 Difference]: Without dead ends: 166 [2020-10-11 12:44:55,446 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:44:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-11 12:44:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-11 12:44:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-11 12:44:55,450 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-11 12:44:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:55,450 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-11 12:44:55,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-11 12:44:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:55,451 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:55,451 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:55,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:55,653 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:55,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-11 12:44:55,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:55,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543934374] [2020-10-11 12:44:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543934374] [2020-10-11 12:44:55,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279226410] [2020-10-11 12:44:55,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:55,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:55,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:55,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:55,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:55,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:55,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:55,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158933714] [2020-10-11 12:44:55,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:55,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:55,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:55,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:55,825 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-11 12:44:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:56,025 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-11 12:44:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:56,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:56,027 INFO L225 Difference]: With dead ends: 160 [2020-10-11 12:44:56,027 INFO L226 Difference]: Without dead ends: 155 [2020-10-11 12:44:56,027 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:44:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-11 12:44:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-11 12:44:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-11 12:44:56,031 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-11 12:44:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:56,031 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-11 12:44:56,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-11 12:44:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:56,032 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:56,032 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:56,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:56,243 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-11 12:44:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:56,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985273093] [2020-10-11 12:44:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:56,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985273093] [2020-10-11 12:44:56,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716188201] [2020-10-11 12:44:56,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:56,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:56,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:56,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:56,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:56,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:56,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:56,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:56,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520677931] [2020-10-11 12:44:56,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:56,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:56,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:56,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:56,462 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-11 12:44:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:56,803 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-11 12:44:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:56,803 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:56,805 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:44:56,805 INFO L226 Difference]: Without dead ends: 181 [2020-10-11 12:44:56,805 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:44:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-11 12:44:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-11 12:44:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-11 12:44:56,809 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-11 12:44:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:56,810 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-11 12:44:56,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-11 12:44:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:56,810 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:56,811 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:57,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:57,011 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-11 12:44:57,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:57,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428754015] [2020-10-11 12:44:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428754015] [2020-10-11 12:44:57,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352883810] [2020-10-11 12:44:57,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:57,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:57,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:57,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:57,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650569019] [2020-10-11 12:44:57,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:57,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:57,235 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-11 12:44:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:57,467 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-11 12:44:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:44:57,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:57,469 INFO L225 Difference]: With dead ends: 169 [2020-10-11 12:44:57,469 INFO L226 Difference]: Without dead ends: 167 [2020-10-11 12:44:57,470 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:44:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-11 12:44:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-11 12:44:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-11 12:44:57,473 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-11 12:44:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:57,473 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-11 12:44:57,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-11 12:44:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:57,474 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:57,474 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:57,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-11 12:44:57,676 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-11 12:44:57,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:57,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239830697] [2020-10-11 12:44:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239830697] [2020-10-11 12:44:57,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69478274] [2020-10-11 12:44:57,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:57,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:57,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:57,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:57,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:57,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644346581] [2020-10-11 12:44:57,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:57,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:57,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:57,873 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-11 12:44:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:58,230 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-11 12:44:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:44:58,231 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:58,232 INFO L225 Difference]: With dead ends: 192 [2020-10-11 12:44:58,232 INFO L226 Difference]: Without dead ends: 184 [2020-10-11 12:44:58,233 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:44:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-11 12:44:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-11 12:44:58,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-11 12:44:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-11 12:44:58,237 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-11 12:44:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:58,237 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-11 12:44:58,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-11 12:44:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:58,238 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:58,238 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:58,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:58,449 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-11 12:44:58,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:58,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212215393] [2020-10-11 12:44:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:58,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212215393] [2020-10-11 12:44:58,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485603843] [2020-10-11 12:44:58,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:58,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:58,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:58,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:58,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565789031] [2020-10-11 12:44:58,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:58,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:58,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:58,627 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-11 12:44:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:58,956 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-11 12:44:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:58,957 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:58,958 INFO L225 Difference]: With dead ends: 180 [2020-10-11 12:44:58,958 INFO L226 Difference]: Without dead ends: 175 [2020-10-11 12:44:58,959 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:44:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-11 12:44:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-11 12:44:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-11 12:44:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-11 12:44:58,961 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-11 12:44:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-11 12:44:58,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-11 12:44:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:58,962 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:58,962 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:59,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-11 12:44:59,163 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:59,164 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-11 12:44:59,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:59,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272522323] [2020-10-11 12:44:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272522323] [2020-10-11 12:44:59,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122409612] [2020-10-11 12:44:59,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:59,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:44:59,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:44:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:59,376 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:59,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 12:44:59,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740855750] [2020-10-11 12:44:59,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:44:59,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:59,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:44:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:59,400 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-11 12:44:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:59,544 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-11 12:44:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:44:59,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-11 12:44:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:59,547 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:44:59,547 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:44:59,547 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:44:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:44:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-11 12:44:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:44:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-11 12:44:59,550 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-11 12:44:59,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:59,551 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-11 12:44:59,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:44:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-11 12:44:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:59,551 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:59,551 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:59,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:59,757 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-11 12:44:59,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:59,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529924345] [2020-10-11 12:44:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529924345] [2020-10-11 12:44:59,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018331140] [2020-10-11 12:44:59,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:59,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:44:59,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:59,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:44:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:00,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:00,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786160208] [2020-10-11 12:45:00,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:00,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:00,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:00,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:00,022 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-11 12:45:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:00,073 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:45:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:45:00,073 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:00,075 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:45:00,075 INFO L226 Difference]: Without dead ends: 153 [2020-10-11 12:45:00,075 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-11 12:45:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-11 12:45:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-11 12:45:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-11 12:45:00,079 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-11 12:45:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:00,080 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-11 12:45:00,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-11 12:45:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:00,080 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:00,080 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:00,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-11 12:45:00,290 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-11 12:45:00,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:00,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142463385] [2020-10-11 12:45:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142463385] [2020-10-11 12:45:00,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367638799] [2020-10-11 12:45:00,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:00,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:00,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:00,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:00,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:00,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:00,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157783844] [2020-10-11 12:45:00,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:00,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:00,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:00,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:00,560 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-11 12:45:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:00,629 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-11 12:45:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:00,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:00,631 INFO L225 Difference]: With dead ends: 170 [2020-10-11 12:45:00,631 INFO L226 Difference]: Without dead ends: 167 [2020-10-11 12:45:00,631 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:45:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-11 12:45:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-11 12:45:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-11 12:45:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-11 12:45:00,634 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-11 12:45:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:00,635 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-11 12:45:00,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-11 12:45:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:00,636 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:00,636 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:00,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:00,837 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-11 12:45:00,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:00,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383210159] [2020-10-11 12:45:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383210159] [2020-10-11 12:45:00,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028218792] [2020-10-11 12:45:00,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:00,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:00,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:00,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:00,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:01,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:01,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813945219] [2020-10-11 12:45:01,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:01,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:01,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:01,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:01,095 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-11 12:45:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:01,188 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-11 12:45:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:01,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:01,190 INFO L225 Difference]: With dead ends: 169 [2020-10-11 12:45:01,190 INFO L226 Difference]: Without dead ends: 166 [2020-10-11 12:45:01,191 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:45:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-11 12:45:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-11 12:45:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-11 12:45:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-11 12:45:01,208 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-11 12:45:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:01,208 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-11 12:45:01,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-11 12:45:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:01,208 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:01,209 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:01,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:01,415 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:01,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-11 12:45:01,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259511399] [2020-10-11 12:45:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259511399] [2020-10-11 12:45:01,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349819908] [2020-10-11 12:45:01,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:01,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:45:01,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:01,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:01,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:01,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537294778] [2020-10-11 12:45:01,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:01,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:01,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:01,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:01,666 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-11 12:45:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:01,768 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-11 12:45:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:01,769 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:01,770 INFO L225 Difference]: With dead ends: 168 [2020-10-11 12:45:01,770 INFO L226 Difference]: Without dead ends: 165 [2020-10-11 12:45:01,770 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:45:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-11 12:45:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-11 12:45:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-11 12:45:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-11 12:45:01,774 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-11 12:45:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:01,774 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-11 12:45:01,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-11 12:45:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:01,775 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:01,775 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:01,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-11 12:45:01,985 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-11 12:45:01,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:01,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533436556] [2020-10-11 12:45:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533436556] [2020-10-11 12:45:02,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433911188] [2020-10-11 12:45:02,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:02,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:02,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:02,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:02,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301375972] [2020-10-11 12:45:02,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:02,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:02,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:02,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:02,307 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-11 12:45:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:02,479 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-11 12:45:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:02,480 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:02,481 INFO L225 Difference]: With dead ends: 167 [2020-10-11 12:45:02,482 INFO L226 Difference]: Without dead ends: 164 [2020-10-11 12:45:02,482 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:45:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-11 12:45:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-11 12:45:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-11 12:45:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-11 12:45:02,487 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-11 12:45:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:02,487 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-11 12:45:02,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-11 12:45:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:02,489 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:02,489 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:02,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:02,700 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-11 12:45:02,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:02,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950671969] [2020-10-11 12:45:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950671969] [2020-10-11 12:45:02,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010976423] [2020-10-11 12:45:02,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:02,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:02,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:02,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:02,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:02,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:02,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041261275] [2020-10-11 12:45:02,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:02,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:02,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:02,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:02,950 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-11 12:45:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:03,146 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-11 12:45:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:03,147 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:03,148 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:45:03,149 INFO L226 Difference]: Without dead ends: 170 [2020-10-11 12:45:03,149 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-11 12:45:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-11 12:45:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-11 12:45:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-11 12:45:03,152 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-11 12:45:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:03,152 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-11 12:45:03,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-11 12:45:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:03,153 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:03,153 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:03,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:03,353 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-11 12:45:03,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:03,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363325648] [2020-10-11 12:45:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363325648] [2020-10-11 12:45:03,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819471128] [2020-10-11 12:45:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:03,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:03,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:03,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:03,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:03,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633763149] [2020-10-11 12:45:03,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:03,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:03,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:03,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:03,597 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-11 12:45:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:03,651 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-11 12:45:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:45:03,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:03,653 INFO L225 Difference]: With dead ends: 163 [2020-10-11 12:45:03,653 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:45:03,653 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:45:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-11 12:45:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-11 12:45:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-11 12:45:03,657 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-11 12:45:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:03,658 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-11 12:45:03,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-11 12:45:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:03,659 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:03,659 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:03,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-11 12:45:03,859 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-11 12:45:03,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:03,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528878283] [2020-10-11 12:45:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528878283] [2020-10-11 12:45:03,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492345352] [2020-10-11 12:45:03,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:04,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:04,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:04,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:04,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:04,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:04,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:04,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750552522] [2020-10-11 12:45:04,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:04,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:04,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:04,193 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:04,379 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-11 12:45:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:04,380 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:04,381 INFO L225 Difference]: With dead ends: 172 [2020-10-11 12:45:04,381 INFO L226 Difference]: Without dead ends: 170 [2020-10-11 12:45:04,381 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:45:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-11 12:45:04,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-11 12:45:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-11 12:45:04,386 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-11 12:45:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:04,386 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-11 12:45:04,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-11 12:45:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:04,388 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:04,388 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:04,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:04,600 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:04,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-11 12:45:04,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:04,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568546147] [2020-10-11 12:45:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568546147] [2020-10-11 12:45:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156854911] [2020-10-11 12:45:04,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:04,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:04,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:04,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:04,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:05,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:05,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:05,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177531706] [2020-10-11 12:45:05,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:05,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:05,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:05,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:05,433 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-11 12:45:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:05,658 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-11 12:45:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:05,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:05,660 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:05,661 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:05,661 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:45:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-11 12:45:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-11 12:45:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-11 12:45:05,664 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-11 12:45:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:05,664 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-11 12:45:05,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-11 12:45:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:05,665 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:05,665 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:05,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-11 12:45:05,868 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-11 12:45:05,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:05,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046459234] [2020-10-11 12:45:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:05,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046459234] [2020-10-11 12:45:05,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165285771] [2020-10-11 12:45:05,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:05,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:05,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:05,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:05,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:06,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:06,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:06,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758502097] [2020-10-11 12:45:06,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:06,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:06,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:06,108 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-11 12:45:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:06,295 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-11 12:45:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:06,296 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:06,297 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:06,298 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:06,298 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-11 12:45:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-11 12:45:06,301 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-11 12:45:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:06,302 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-11 12:45:06,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-11 12:45:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:06,302 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:06,302 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:06,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-11 12:45:06,507 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-11 12:45:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:06,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227511913] [2020-10-11 12:45:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:06,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227511913] [2020-10-11 12:45:06,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104216772] [2020-10-11 12:45:06,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:06,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:06,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:06,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:06,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:06,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:06,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:06,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479437459] [2020-10-11 12:45:06,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:06,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:06,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:06,740 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-11 12:45:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:06,939 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-11 12:45:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:06,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:06,941 INFO L225 Difference]: With dead ends: 184 [2020-10-11 12:45:06,942 INFO L226 Difference]: Without dead ends: 182 [2020-10-11 12:45:06,942 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-11 12:45:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-11 12:45:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-11 12:45:06,945 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-11 12:45:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:06,946 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-11 12:45:06,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-11 12:45:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:06,946 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:06,946 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:07,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-11 12:45:07,153 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:07,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-11 12:45:07,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:07,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33818686] [2020-10-11 12:45:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33818686] [2020-10-11 12:45:07,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80571385] [2020-10-11 12:45:07,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:07,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:07,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:07,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:07,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818302849] [2020-10-11 12:45:07,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:07,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:07,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:07,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:07,408 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-11 12:45:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:07,630 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-11 12:45:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:07,631 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:07,632 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:07,633 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:07,633 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-11 12:45:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-11 12:45:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-11 12:45:07,636 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-11 12:45:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-11 12:45:07,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-11 12:45:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:07,637 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:07,637 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:07,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:07,844 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-11 12:45:07,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:07,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234979649] [2020-10-11 12:45:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234979649] [2020-10-11 12:45:07,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72892821] [2020-10-11 12:45:07,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:07,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:07,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:07,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:07,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:08,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:08,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13734752] [2020-10-11 12:45:08,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:08,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:08,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:08,083 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-11 12:45:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:08,220 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-11 12:45:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:08,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:08,222 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:45:08,222 INFO L226 Difference]: Without dead ends: 174 [2020-10-11 12:45:08,223 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:45:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-11 12:45:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-11 12:45:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:45:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-11 12:45:08,226 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-11 12:45:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:08,227 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-11 12:45:08,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-11 12:45:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:08,227 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:08,227 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:08,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:08,437 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-11 12:45:08,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:08,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859256573] [2020-10-11 12:45:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859256573] [2020-10-11 12:45:08,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065233541] [2020-10-11 12:45:08,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:08,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:45:08,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:08,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:08,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769550437] [2020-10-11 12:45:08,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:08,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:08,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:08,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:08,695 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:08,897 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-11 12:45:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:08,898 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:08,899 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:08,899 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:08,900 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-11 12:45:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-11 12:45:08,902 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-11 12:45:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:08,903 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-11 12:45:08,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-11 12:45:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:08,903 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:08,903 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:09,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:09,104 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:09,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-11 12:45:09,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:09,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704263395] [2020-10-11 12:45:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704263395] [2020-10-11 12:45:09,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893562407] [2020-10-11 12:45:09,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:09,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:09,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:09,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:09,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:09,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851021251] [2020-10-11 12:45:09,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:09,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:09,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:09,410 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-11 12:45:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:09,618 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-11 12:45:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:09,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:09,619 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:09,620 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:09,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-11 12:45:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-11 12:45:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-11 12:45:09,624 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-11 12:45:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:09,624 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-11 12:45:09,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-11 12:45:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:09,625 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:09,625 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:09,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:09,836 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-11 12:45:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142991447] [2020-10-11 12:45:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142991447] [2020-10-11 12:45:09,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766114931] [2020-10-11 12:45:09,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:09,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:09,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:09,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:09,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:10,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:10,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:10,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862898080] [2020-10-11 12:45:10,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:10,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:10,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:10,123 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-11 12:45:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:10,191 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-11 12:45:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:10,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:10,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:10,193 INFO L225 Difference]: With dead ends: 182 [2020-10-11 12:45:10,193 INFO L226 Difference]: Without dead ends: 180 [2020-10-11 12:45:10,193 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:45:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-11 12:45:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-11 12:45:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:45:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-11 12:45:10,198 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-11 12:45:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-11 12:45:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-11 12:45:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:10,200 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:10,200 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:10,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-11 12:45:10,410 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:10,410 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-11 12:45:10,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:10,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718586358] [2020-10-11 12:45:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:10,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718586358] [2020-10-11 12:45:10,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717444732] [2020-10-11 12:45:10,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:10,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:10,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:10,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:10,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:10,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:10,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:10,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203885564] [2020-10-11 12:45:10,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:10,691 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-11 12:45:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:10,864 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-11 12:45:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:10,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:10,866 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:10,867 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:10,867 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:45:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-11 12:45:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-11 12:45:10,870 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-11 12:45:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:10,870 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-11 12:45:10,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-11 12:45:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:10,871 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:10,871 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:11,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:11,072 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-11 12:45:11,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:11,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117087399] [2020-10-11 12:45:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117087399] [2020-10-11 12:45:11,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487123297] [2020-10-11 12:45:11,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:11,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:11,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:11,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:11,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798670380] [2020-10-11 12:45:11,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:11,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:11,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:11,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:11,369 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:11,641 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-11 12:45:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:11,642 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:11,644 INFO L225 Difference]: With dead ends: 191 [2020-10-11 12:45:11,644 INFO L226 Difference]: Without dead ends: 189 [2020-10-11 12:45:11,644 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-11 12:45:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-11 12:45:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-11 12:45:11,650 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-11 12:45:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:11,650 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-11 12:45:11,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-11 12:45:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:11,651 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:11,651 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:11,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:11,864 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-11 12:45:11,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:11,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012943163] [2020-10-11 12:45:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012943163] [2020-10-11 12:45:11,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676670953] [2020-10-11 12:45:11,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:11,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:11,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:11,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:12,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:12,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222245201] [2020-10-11 12:45:12,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:12,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:12,108 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-11 12:45:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:12,352 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-11 12:45:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:12,353 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:12,354 INFO L225 Difference]: With dead ends: 187 [2020-10-11 12:45:12,354 INFO L226 Difference]: Without dead ends: 185 [2020-10-11 12:45:12,355 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-11 12:45:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-11 12:45:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-11 12:45:12,358 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-11 12:45:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:12,359 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-11 12:45:12,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-11 12:45:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:12,359 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:12,360 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:12,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-11 12:45:12,564 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-11 12:45:12,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:12,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227066536] [2020-10-11 12:45:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227066536] [2020-10-11 12:45:12,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981222680] [2020-10-11 12:45:12,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:12,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:12,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:12,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:12,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:12,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:12,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127159163] [2020-10-11 12:45:12,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:12,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:12,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:12,803 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:13,042 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-11 12:45:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:13,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:13,044 INFO L225 Difference]: With dead ends: 198 [2020-10-11 12:45:13,045 INFO L226 Difference]: Without dead ends: 196 [2020-10-11 12:45:13,045 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-11 12:45:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-11 12:45:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-11 12:45:13,048 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-11 12:45:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:13,049 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-11 12:45:13,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-11 12:45:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:13,049 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:13,049 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:13,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:13,252 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:13,252 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-11 12:45:13,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:13,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912178813] [2020-10-11 12:45:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:13,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912178813] [2020-10-11 12:45:13,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42107812] [2020-10-11 12:45:13,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:13,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:13,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:13,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:13,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:13,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:13,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:13,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628841323] [2020-10-11 12:45:13,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:13,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:13,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:13,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:13,497 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-11 12:45:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:13,771 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-11 12:45:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:13,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:13,773 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:45:13,773 INFO L226 Difference]: Without dead ends: 187 [2020-10-11 12:45:13,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-11 12:45:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-11 12:45:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:45:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-11 12:45:13,776 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-11 12:45:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:13,776 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-11 12:45:13,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-11 12:45:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:13,777 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:13,777 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:13,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-11 12:45:13,978 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-11 12:45:13,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:13,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115982225] [2020-10-11 12:45:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115982225] [2020-10-11 12:45:14,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182881893] [2020-10-11 12:45:14,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:14,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:14,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:14,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:14,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:14,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:14,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285103353] [2020-10-11 12:45:14,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:14,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:14,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:14,248 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-11 12:45:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:14,346 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-11 12:45:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:14,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:14,347 INFO L225 Difference]: With dead ends: 178 [2020-10-11 12:45:14,348 INFO L226 Difference]: Without dead ends: 176 [2020-10-11 12:45:14,348 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:45:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-11 12:45:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-11 12:45:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-11 12:45:14,351 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-11 12:45:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:14,352 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-11 12:45:14,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-11 12:45:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:14,352 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:14,352 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:14,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:14,559 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-11 12:45:14,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:14,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438072496] [2020-10-11 12:45:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438072496] [2020-10-11 12:45:14,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638224480] [2020-10-11 12:45:14,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:14,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:14,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:14,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:14,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:14,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:14,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593794232] [2020-10-11 12:45:14,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:14,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:14,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:14,812 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-11 12:45:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:15,002 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-11 12:45:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:15,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:15,004 INFO L225 Difference]: With dead ends: 193 [2020-10-11 12:45:15,004 INFO L226 Difference]: Without dead ends: 191 [2020-10-11 12:45:15,005 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-11 12:45:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-11 12:45:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-11 12:45:15,007 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-11 12:45:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:15,008 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-11 12:45:15,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-11 12:45:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:15,008 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:15,008 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:15,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-11 12:45:15,209 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-11 12:45:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:15,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216513667] [2020-10-11 12:45:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:15,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216513667] [2020-10-11 12:45:15,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849876242] [2020-10-11 12:45:15,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:15,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:15,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987705798] [2020-10-11 12:45:15,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:15,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:15,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:15,471 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-11 12:45:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:15,731 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-11 12:45:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:15,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:15,732 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:45:15,732 INFO L226 Difference]: Without dead ends: 193 [2020-10-11 12:45:15,733 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:45:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-11 12:45:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-11 12:45:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-11 12:45:15,736 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-11 12:45:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:15,736 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-11 12:45:15,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-11 12:45:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:15,736 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:15,736 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:15,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:15,937 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:15,938 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-11 12:45:15,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:15,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99195640] [2020-10-11 12:45:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99195640] [2020-10-11 12:45:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459709739] [2020-10-11 12:45:16,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:16,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:16,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:16,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:16,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:16,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:16,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073781162] [2020-10-11 12:45:16,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:16,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:16,184 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-11 12:45:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:16,304 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-11 12:45:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:16,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:16,306 INFO L225 Difference]: With dead ends: 174 [2020-10-11 12:45:16,307 INFO L226 Difference]: Without dead ends: 172 [2020-10-11 12:45:16,307 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:45:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-11 12:45:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-11 12:45:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-11 12:45:16,310 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-11 12:45:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:16,310 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-11 12:45:16,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-11 12:45:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:16,310 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:16,311 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:16,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-11 12:45:16,513 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-11 12:45:16,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:16,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823861707] [2020-10-11 12:45:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823861707] [2020-10-11 12:45:16,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632977688] [2020-10-11 12:45:16,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:16,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:16,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:16,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:16,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:16,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:16,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487197319] [2020-10-11 12:45:16,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:16,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:16,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:16,757 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-11 12:45:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:16,978 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-11 12:45:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:16,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:16,980 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:45:16,980 INFO L226 Difference]: Without dead ends: 187 [2020-10-11 12:45:16,981 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:45:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-11 12:45:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-11 12:45:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-11 12:45:16,984 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-11 12:45:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:16,984 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-11 12:45:16,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-11 12:45:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:16,985 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:16,985 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:17,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:17,186 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-11 12:45:17,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:17,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548294617] [2020-10-11 12:45:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:17,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548294617] [2020-10-11 12:45:17,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635308869] [2020-10-11 12:45:17,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:17,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:17,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:17,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:17,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:17,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:17,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:17,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23915400] [2020-10-11 12:45:17,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:17,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:17,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:17,417 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-11 12:45:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:17,556 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-11 12:45:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:17,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:17,558 INFO L225 Difference]: With dead ends: 175 [2020-10-11 12:45:17,558 INFO L226 Difference]: Without dead ends: 173 [2020-10-11 12:45:17,559 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:45:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-11 12:45:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-11 12:45:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:17,562 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:17,562 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:17,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:17,563 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:17,563 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:17,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:17,764 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:17,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:17,765 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-11 12:45:17,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:17,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447352670] [2020-10-11 12:45:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:17,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447352670] [2020-10-11 12:45:17,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002532416] [2020-10-11 12:45:17,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:17,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:17,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:17,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:17,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:17,980 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:18,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:18,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252150620] [2020-10-11 12:45:18,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:18,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:18,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:18,020 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:18,359 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-11 12:45:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:18,359 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:18,360 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:45:18,360 INFO L226 Difference]: Without dead ends: 190 [2020-10-11 12:45:18,360 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:45:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-11 12:45:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-11 12:45:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-11 12:45:18,363 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-11 12:45:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:18,363 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-11 12:45:18,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-11 12:45:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:18,364 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:18,364 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:18,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:18,570 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-11 12:45:18,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:18,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293094652] [2020-10-11 12:45:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293094652] [2020-10-11 12:45:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106313850] [2020-10-11 12:45:18,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:18,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:18,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:18,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:18,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:18,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:18,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470112641] [2020-10-11 12:45:18,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:18,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:18,816 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:19,072 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-11 12:45:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:19,073 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:19,074 INFO L225 Difference]: With dead ends: 187 [2020-10-11 12:45:19,074 INFO L226 Difference]: Without dead ends: 185 [2020-10-11 12:45:19,074 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-11 12:45:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-11 12:45:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:19,077 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:19,077 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:19,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:19,078 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:19,078 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:19,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:19,279 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-11 12:45:19,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:19,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012524303] [2020-10-11 12:45:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:19,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012524303] [2020-10-11 12:45:19,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000114959] [2020-10-11 12:45:19,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:19,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:19,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:19,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:19,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:19,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:19,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164804793] [2020-10-11 12:45:19,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:19,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:19,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:19,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:19,533 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:19,995 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-11 12:45:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:45:19,996 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:19,998 INFO L225 Difference]: With dead ends: 212 [2020-10-11 12:45:19,998 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:45:19,998 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:45:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:45:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-11 12:45:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:20,001 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:20,001 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:20,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:20,002 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:20,002 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:20,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-11 12:45:20,203 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:20,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:20,203 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-11 12:45:20,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:20,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949920011] [2020-10-11 12:45:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:20,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949920011] [2020-10-11 12:45:20,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859409995] [2020-10-11 12:45:20,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:20,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:20,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:20,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:20,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:20,411 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:20,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:20,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:20,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224456614] [2020-10-11 12:45:20,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:20,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:20,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:20,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:20,435 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:20,764 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-11 12:45:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:20,764 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:20,766 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:45:20,766 INFO L226 Difference]: Without dead ends: 197 [2020-10-11 12:45:20,766 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:45:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-11 12:45:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-11 12:45:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-11 12:45:20,770 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-11 12:45:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:20,770 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-11 12:45:20,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-11 12:45:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:20,771 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:20,771 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:20,973 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-11 12:45:20,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133596596] [2020-10-11 12:45:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133596596] [2020-10-11 12:45:21,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686738513] [2020-10-11 12:45:21,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:21,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:21,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:21,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:21,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:21,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502757515] [2020-10-11 12:45:21,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:21,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:21,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:21,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:21,258 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-11 12:45:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:21,531 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-11 12:45:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:21,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:21,533 INFO L225 Difference]: With dead ends: 198 [2020-10-11 12:45:21,533 INFO L226 Difference]: Without dead ends: 196 [2020-10-11 12:45:21,533 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-11 12:45:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-11 12:45:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-11 12:45:21,543 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-11 12:45:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:21,543 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-11 12:45:21,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-11 12:45:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:21,544 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:21,544 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:21,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-11 12:45:21,754 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-11 12:45:21,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:21,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741462939] [2020-10-11 12:45:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741462939] [2020-10-11 12:45:21,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498429207] [2020-10-11 12:45:21,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:21,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:21,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:21,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:22,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:22,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:22,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082438860] [2020-10-11 12:45:22,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:22,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:22,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:22,030 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:22,434 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-11 12:45:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:45:22,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:22,436 INFO L225 Difference]: With dead ends: 209 [2020-10-11 12:45:22,436 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:45:22,436 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:45:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:45:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-11 12:45:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:22,440 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:22,440 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:22,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:22,440 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:22,440 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:22,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-11 12:45:22,641 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-11 12:45:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:22,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142955034] [2020-10-11 12:45:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:22,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142955034] [2020-10-11 12:45:22,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733387363] [2020-10-11 12:45:22,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:22,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:22,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:22,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:22,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:22,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:22,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:22,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:22,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630910273] [2020-10-11 12:45:22,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:22,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:22,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:22,903 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:23,446 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-11 12:45:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:23,446 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:23,448 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:45:23,448 INFO L226 Difference]: Without dead ends: 212 [2020-10-11 12:45:23,448 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:45:23,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-11 12:45:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-11 12:45:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-11 12:45:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-11 12:45:23,452 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-11 12:45:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:23,453 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-11 12:45:23,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-11 12:45:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:23,453 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:23,453 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:23,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-11 12:45:23,665 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-11 12:45:23,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:23,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017988396] [2020-10-11 12:45:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:23,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017988396] [2020-10-11 12:45:23,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643056523] [2020-10-11 12:45:23,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:23,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:23,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:23,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:23,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:26,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:26,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:26,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:26,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471144040] [2020-10-11 12:45:26,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:26,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:26,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-11 12:45:26,059 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-11 12:45:30,353 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:45:34,581 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-11 12:45:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:35,061 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-11 12:45:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:45:35,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:35,063 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:45:35,064 INFO L226 Difference]: Without dead ends: 228 [2020-10-11 12:45:35,064 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-11 12:45:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-11 12:45:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-11 12:45:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-11 12:45:35,068 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-11 12:45:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:35,068 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-11 12:45:35,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-11 12:45:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:35,068 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:35,069 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:35,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-11 12:45:35,269 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:35,270 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-11 12:45:35,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:35,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471572366] [2020-10-11 12:45:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:35,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471572366] [2020-10-11 12:45:35,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174084777] [2020-10-11 12:45:35,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:35,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:35,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:35,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:35,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:35,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:35,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:35,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962443782] [2020-10-11 12:45:35,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:35,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:35,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:35,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:35,572 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 15 states. [2020-10-11 12:45:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:36,126 INFO L93 Difference]: Finished difference Result 219 states and 522 transitions. [2020-10-11 12:45:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:36,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:36,128 INFO L225 Difference]: With dead ends: 219 [2020-10-11 12:45:36,128 INFO L226 Difference]: Without dead ends: 214 [2020-10-11 12:45:36,128 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:45:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-11 12:45:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-10-11 12:45:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-11 12:45:36,132 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-11 12:45:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:36,132 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-11 12:45:36,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-11 12:45:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:36,133 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:36,133 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:36,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:36,337 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:36,337 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-11 12:45:36,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:36,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125987184] [2020-10-11 12:45:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125987184] [2020-10-11 12:45:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824278790] [2020-10-11 12:45:36,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:36,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:36,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:36,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:36,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:36,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:36,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:36,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564390772] [2020-10-11 12:45:36,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:36,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:36,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:36,589 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-11 12:45:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:36,853 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-11 12:45:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:36,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:36,855 INFO L225 Difference]: With dead ends: 197 [2020-10-11 12:45:36,855 INFO L226 Difference]: Without dead ends: 195 [2020-10-11 12:45:36,855 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-11 12:45:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-11 12:45:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-11 12:45:36,859 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-11 12:45:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:36,859 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-11 12:45:36,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-11 12:45:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:36,860 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:36,860 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:37,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:37,062 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:37,063 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-11 12:45:37,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:37,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334883719] [2020-10-11 12:45:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:37,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334883719] [2020-10-11 12:45:37,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578216821] [2020-10-11 12:45:37,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:37,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:37,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:37,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:37,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:37,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:37,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369393748] [2020-10-11 12:45:37,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:37,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:37,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:37,308 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-11 12:45:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:37,587 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-11 12:45:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:37,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:37,588 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:45:37,588 INFO L226 Difference]: Without dead ends: 200 [2020-10-11 12:45:37,588 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-11 12:45:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-11 12:45:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-11 12:45:37,591 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-11 12:45:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:37,591 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-11 12:45:37,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-11 12:45:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:37,592 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:37,592 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-11 12:45:37,793 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-11 12:45:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:37,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160609274] [2020-10-11 12:45:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:37,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160609274] [2020-10-11 12:45:37,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387529815] [2020-10-11 12:45:37,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:37,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:37,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:37,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:38,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:38,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:38,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987096397] [2020-10-11 12:45:38,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:38,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:38,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:38,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:38,069 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-11 12:45:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:38,354 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-11 12:45:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:38,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:38,355 INFO L225 Difference]: With dead ends: 197 [2020-10-11 12:45:38,355 INFO L226 Difference]: Without dead ends: 195 [2020-10-11 12:45:38,355 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-11 12:45:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-11 12:45:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-11 12:45:38,359 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-11 12:45:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:38,359 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-11 12:45:38,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-11 12:45:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:38,359 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:38,360 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:38,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-11 12:45:38,560 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-11 12:45:38,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:38,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223786576] [2020-10-11 12:45:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223786576] [2020-10-11 12:45:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999320923] [2020-10-11 12:45:38,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:38,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:38,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:38,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:38,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:38,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:38,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:38,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092765727] [2020-10-11 12:45:38,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:38,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:38,862 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-11 12:45:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:39,442 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-11 12:45:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:45:39,443 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:39,443 INFO L225 Difference]: With dead ends: 214 [2020-10-11 12:45:39,443 INFO L226 Difference]: Without dead ends: 212 [2020-10-11 12:45:39,444 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:45:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-11 12:45:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-11 12:45:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:45:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-11 12:45:39,449 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-11 12:45:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:39,449 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-11 12:45:39,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-11 12:45:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:39,450 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:39,450 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:39,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-11 12:45:39,660 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:39,661 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-11 12:45:39,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:39,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542247327] [2020-10-11 12:45:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:39,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542247327] [2020-10-11 12:45:39,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593513454] [2020-10-11 12:45:39,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:39,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:39,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:39,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:40,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:40,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:40,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171563471] [2020-10-11 12:45:40,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:40,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:40,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:40,005 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-11 12:45:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:40,390 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-11 12:45:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:40,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:40,392 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:45:40,392 INFO L226 Difference]: Without dead ends: 215 [2020-10-11 12:45:40,392 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:45:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-11 12:45:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-11 12:45:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-11 12:45:40,396 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-11 12:45:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:40,396 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-11 12:45:40,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-11 12:45:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:40,396 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:40,397 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:40,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:40,598 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:40,598 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-11 12:45:40,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:40,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211549113] [2020-10-11 12:45:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211549113] [2020-10-11 12:45:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255732938] [2020-10-11 12:45:40,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:40,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:40,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:40,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:40,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:40,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004504598] [2020-10-11 12:45:40,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:40,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:40,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:40,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:40,835 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-11 12:45:41,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:41,266 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-11 12:45:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:45:41,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:41,267 INFO L225 Difference]: With dead ends: 211 [2020-10-11 12:45:41,267 INFO L226 Difference]: Without dead ends: 209 [2020-10-11 12:45:41,268 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:45:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-11 12:45:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-11 12:45:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:45:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:45:41,272 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:45:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:41,272 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:45:41,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:45:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:41,272 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:41,273 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:41,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:41,480 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-11 12:45:41,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:41,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734991702] [2020-10-11 12:45:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:41,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734991702] [2020-10-11 12:45:41,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596197506] [2020-10-11 12:45:41,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:41,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:41,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:41,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:41,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:41,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:41,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:41,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:41,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886372959] [2020-10-11 12:45:41,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:41,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:41,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:41,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:41,725 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:45:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:42,222 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-11 12:45:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:45:42,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:42,223 INFO L225 Difference]: With dead ends: 211 [2020-10-11 12:45:42,223 INFO L226 Difference]: Without dead ends: 206 [2020-10-11 12:45:42,223 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:45:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-11 12:45:42,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-11 12:45:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:45:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:45:42,227 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:45:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:42,227 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:45:42,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:45:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:42,228 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:42,228 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:42,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-11 12:45:42,428 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:42,429 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-11 12:45:42,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:42,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649793120] [2020-10-11 12:45:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:42,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649793120] [2020-10-11 12:45:42,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604392345] [2020-10-11 12:45:42,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:42,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:42,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:42,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:42,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:42,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:42,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:42,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:42,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606838940] [2020-10-11 12:45:42,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:42,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:42,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:42,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:42,700 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:45:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:43,317 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-11 12:45:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:45:43,318 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:43,318 INFO L225 Difference]: With dead ends: 227 [2020-10-11 12:45:43,318 INFO L226 Difference]: Without dead ends: 222 [2020-10-11 12:45:43,319 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:45:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-11 12:45:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-11 12:45:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-11 12:45:43,323 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-11 12:45:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:43,323 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-11 12:45:43,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-11 12:45:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:43,324 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:43,324 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:43,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-11 12:45:43,524 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:43,525 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-11 12:45:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:43,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613525719] [2020-10-11 12:45:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613525719] [2020-10-11 12:45:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91955196] [2020-10-11 12:45:43,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:43,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:43,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:43,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:43,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:43,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:43,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:43,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264019346] [2020-10-11 12:45:43,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:43,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:43,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:43,777 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-11 12:45:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:44,259 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-11 12:45:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:45:44,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:44,261 INFO L225 Difference]: With dead ends: 221 [2020-10-11 12:45:44,261 INFO L226 Difference]: Without dead ends: 219 [2020-10-11 12:45:44,262 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:45:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-11 12:45:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-11 12:45:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:45:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:45:44,265 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:45:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:44,265 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:45:44,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:45:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:44,266 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:44,266 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:44,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:44,467 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:44,467 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-11 12:45:44,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:44,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113771117] [2020-10-11 12:45:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:44,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113771117] [2020-10-11 12:45:44,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552158748] [2020-10-11 12:45:44,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:44,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:44,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:44,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:44,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:44,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:44,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170967361] [2020-10-11 12:45:44,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:44,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:44,702 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:45:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:45,271 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-11 12:45:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:45:45,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:45,273 INFO L225 Difference]: With dead ends: 240 [2020-10-11 12:45:45,273 INFO L226 Difference]: Without dead ends: 232 [2020-10-11 12:45:45,273 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:45:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-11 12:45:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-11 12:45:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-11 12:45:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-11 12:45:45,276 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-11 12:45:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:45,277 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-11 12:45:45,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-11 12:45:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:45,277 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:45,277 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:45,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-11 12:45:45,478 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-11 12:45:45,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:45,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158905484] [2020-10-11 12:45:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:45,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158905484] [2020-10-11 12:45:45,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115616125] [2020-10-11 12:45:45,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:45,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:45,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:45,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:45,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:45,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656926734] [2020-10-11 12:45:45,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:45,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:45,742 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-11 12:45:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:46,361 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-11 12:45:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:45:46,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:46,363 INFO L225 Difference]: With dead ends: 238 [2020-10-11 12:45:46,363 INFO L226 Difference]: Without dead ends: 230 [2020-10-11 12:45:46,363 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:45:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-11 12:45:46,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-11 12:45:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-11 12:45:46,366 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-11 12:45:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:46,366 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-11 12:45:46,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-11 12:45:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:46,367 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:46,367 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:46,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:46,568 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-11 12:45:46,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:46,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29932163] [2020-10-11 12:45:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:46,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29932163] [2020-10-11 12:45:46,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961647133] [2020-10-11 12:45:46,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:46,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:46,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:46,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:46,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:46,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767625898] [2020-10-11 12:45:46,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:46,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:46,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:46,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:46,807 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-11 12:45:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:47,067 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-11 12:45:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:47,067 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:47,068 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:45:47,068 INFO L226 Difference]: Without dead ends: 193 [2020-10-11 12:45:47,068 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-11 12:45:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-11 12:45:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-11 12:45:47,071 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-11 12:45:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:47,072 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-11 12:45:47,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-11 12:45:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:47,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:47,072 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:47,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-11 12:45:47,275 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-11 12:45:47,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:47,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695965428] [2020-10-11 12:45:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:47,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695965428] [2020-10-11 12:45:47,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347646019] [2020-10-11 12:45:47,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:47,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:47,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:47,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:47,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:47,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:47,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:47,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772173968] [2020-10-11 12:45:47,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:47,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:47,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:47,530 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-11 12:45:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:48,025 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-11 12:45:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:48,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:48,026 INFO L225 Difference]: With dead ends: 206 [2020-10-11 12:45:48,026 INFO L226 Difference]: Without dead ends: 204 [2020-10-11 12:45:48,027 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:45:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-11 12:45:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-11 12:45:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-11 12:45:48,030 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-11 12:45:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:48,030 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-11 12:45:48,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-11 12:45:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:48,030 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:48,030 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:48,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:48,231 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-11 12:45:48,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:48,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625910090] [2020-10-11 12:45:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625910090] [2020-10-11 12:45:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234804357] [2020-10-11 12:45:48,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:48,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:45:48,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:48,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:48,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:48,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:49,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:49,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 12:45:49,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191223198] [2020-10-11 12:45:49,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:45:49,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:49,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:45:49,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-11 12:45:49,693 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-11 12:45:52,139 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-11 12:46:12,719 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-11 12:46:42,683 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-11 12:47:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:05,815 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-11 12:47:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:47:05,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-11 12:47:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:05,817 INFO L225 Difference]: With dead ends: 252 [2020-10-11 12:47:05,817 INFO L226 Difference]: Without dead ends: 247 [2020-10-11 12:47:05,818 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-11 12:47:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-11 12:47:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 139. [2020-10-11 12:47:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:47:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-11 12:47:05,822 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-11 12:47:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:05,823 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-11 12:47:05,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:47:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-11 12:47:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:05,823 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:05,823 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:06,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-11 12:47:06,034 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:06,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:06,034 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-11 12:47:06,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:06,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166677990] [2020-10-11 12:47:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:06,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166677990] [2020-10-11 12:47:06,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895101678] [2020-10-11 12:47:06,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:06,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:06,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:06,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:06,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:06,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574607172] [2020-10-11 12:47:06,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:06,295 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-11 12:47:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:06,529 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-11 12:47:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:47:06,530 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:06,530 INFO L225 Difference]: With dead ends: 194 [2020-10-11 12:47:06,530 INFO L226 Difference]: Without dead ends: 192 [2020-10-11 12:47:06,531 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:47:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-11 12:47:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-11 12:47:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:47:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-11 12:47:06,533 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-11 12:47:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:06,533 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-11 12:47:06,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-11 12:47:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:06,533 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:06,534 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:06,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:06,734 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-11 12:47:06,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:06,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176781910] [2020-10-11 12:47:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:06,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176781910] [2020-10-11 12:47:06,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719320479] [2020-10-11 12:47:06,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:06,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:06,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:06,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:06,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:06,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:06,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:06,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360742031] [2020-10-11 12:47:06,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:06,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:06,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:06,998 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-11 12:47:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:07,304 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-11 12:47:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:07,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:07,305 INFO L225 Difference]: With dead ends: 205 [2020-10-11 12:47:07,305 INFO L226 Difference]: Without dead ends: 203 [2020-10-11 12:47:07,306 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:47:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-11 12:47:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-11 12:47:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:47:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-11 12:47:07,309 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-11 12:47:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:07,309 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-11 12:47:07,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-11 12:47:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:07,310 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:07,310 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:07,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:07,519 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-11 12:47:07,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:07,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551586720] [2020-10-11 12:47:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:07,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551586720] [2020-10-11 12:47:07,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906450894] [2020-10-11 12:47:07,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:07,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:07,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:07,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:07,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:07,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863732000] [2020-10-11 12:47:07,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:07,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:07,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:07,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:07,773 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-11 12:47:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:08,052 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-11 12:47:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:08,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:08,053 INFO L225 Difference]: With dead ends: 201 [2020-10-11 12:47:08,054 INFO L226 Difference]: Without dead ends: 199 [2020-10-11 12:47:08,054 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:47:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-11 12:47:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-11 12:47:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:47:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-11 12:47:08,056 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-11 12:47:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:08,056 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-11 12:47:08,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-11 12:47:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:08,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:08,057 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:08,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:08,258 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-11 12:47:08,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:08,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274260630] [2020-10-11 12:47:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:08,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274260630] [2020-10-11 12:47:08,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461676983] [2020-10-11 12:47:08,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:08,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:08,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:08,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:08,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:08,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482183629] [2020-10-11 12:47:08,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:08,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:08,526 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-11 12:47:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:08,776 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-11 12:47:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:47:08,777 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:08,778 INFO L225 Difference]: With dead ends: 194 [2020-10-11 12:47:08,778 INFO L226 Difference]: Without dead ends: 192 [2020-10-11 12:47:08,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:47:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-11 12:47:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-11 12:47:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:47:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-11 12:47:08,781 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-11 12:47:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:08,781 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-11 12:47:08,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-11 12:47:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:08,782 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:08,782 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:08,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-11 12:47:08,989 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:08,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-11 12:47:08,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:08,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27054080] [2020-10-11 12:47:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:09,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27054080] [2020-10-11 12:47:09,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388717255] [2020-10-11 12:47:09,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:09,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:09,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:09,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:09,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:09,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:09,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756111778] [2020-10-11 12:47:09,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:09,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:09,258 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-11 12:47:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:09,614 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-11 12:47:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:47:09,615 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:09,616 INFO L225 Difference]: With dead ends: 209 [2020-10-11 12:47:09,616 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:47:09,617 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:47:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-11 12:47:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:47:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-11 12:47:09,619 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-11 12:47:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:09,620 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-11 12:47:09,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-11 12:47:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:09,620 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:09,620 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:09,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:09,821 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-11 12:47:09,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:09,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175224041] [2020-10-11 12:47:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:09,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175224041] [2020-10-11 12:47:09,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182665055] [2020-10-11 12:47:09,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:09,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:47:09,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:09,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:10,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:10,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:10,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35747322] [2020-10-11 12:47:10,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:10,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:10,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:10,084 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-11 12:47:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:10,419 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-11 12:47:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:47:10,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:10,420 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:47:10,420 INFO L226 Difference]: Without dead ends: 200 [2020-10-11 12:47:10,420 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-11 12:47:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-11 12:47:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:47:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-11 12:47:10,423 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-11 12:47:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:10,423 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-11 12:47:10,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-11 12:47:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:10,424 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:10,424 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:10,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-11 12:47:10,625 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:10,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-11 12:47:10,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:10,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556625605] [2020-10-11 12:47:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:10,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556625605] [2020-10-11 12:47:10,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356022168] [2020-10-11 12:47:10,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:10,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:10,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:10,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:10,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:10,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:10,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759498660] [2020-10-11 12:47:10,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:10,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:10,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:10,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:10,874 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-11 12:47:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:11,191 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-11 12:47:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:47:11,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:11,193 INFO L225 Difference]: With dead ends: 201 [2020-10-11 12:47:11,193 INFO L226 Difference]: Without dead ends: 199 [2020-10-11 12:47:11,193 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-11 12:47:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-11 12:47:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:47:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-11 12:47:11,197 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-11 12:47:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:11,197 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-11 12:47:11,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-11 12:47:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:11,198 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:11,198 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:11,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-11 12:47:11,399 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:11,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-11 12:47:11,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:11,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787850790] [2020-10-11 12:47:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:11,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787850790] [2020-10-11 12:47:11,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912442277] [2020-10-11 12:47:11,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:11,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:11,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:11,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:11,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:11,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:11,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:11,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433940042] [2020-10-11 12:47:11,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:11,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:11,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:11,657 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-11 12:47:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:12,112 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-11 12:47:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:47:12,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:12,113 INFO L225 Difference]: With dead ends: 215 [2020-10-11 12:47:12,113 INFO L226 Difference]: Without dead ends: 213 [2020-10-11 12:47:12,114 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:47:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-11 12:47:12,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-11 12:47:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:47:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-11 12:47:12,117 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-11 12:47:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:12,118 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-11 12:47:12,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-11 12:47:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:12,119 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:12,119 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:12,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:12,322 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-11 12:47:12,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:12,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838222271] [2020-10-11 12:47:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:12,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838222271] [2020-10-11 12:47:12,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926754495] [2020-10-11 12:47:12,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:12,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:12,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:12,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:12,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:12,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:12,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932707911] [2020-10-11 12:47:12,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:12,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:12,602 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-11 12:47:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:12,990 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-11 12:47:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:47:12,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:12,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:12,991 INFO L225 Difference]: With dead ends: 196 [2020-10-11 12:47:12,991 INFO L226 Difference]: Without dead ends: 194 [2020-10-11 12:47:12,992 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:47:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-11 12:47:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-11 12:47:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:47:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:47:12,995 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:47:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:12,995 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:47:12,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:47:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:12,996 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:12,996 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:13,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:13,197 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:13,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-11 12:47:13,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:13,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665190980] [2020-10-11 12:47:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:13,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665190980] [2020-10-11 12:47:13,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155549019] [2020-10-11 12:47:13,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:13,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:13,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:13,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:47:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:13,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:13,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:13,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834486424] [2020-10-11 12:47:13,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:13,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:13,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:13,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:13,427 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:47:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:13,742 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-11 12:47:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:47:13,742 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:13,743 INFO L225 Difference]: With dead ends: 191 [2020-10-11 12:47:13,743 INFO L226 Difference]: Without dead ends: 186 [2020-10-11 12:47:13,744 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-11 12:47:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-11 12:47:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:47:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:47:13,748 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:47:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:13,748 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:47:13,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:47:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:13,749 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:13,749 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:13,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-11 12:47:13,955 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-11 12:47:13,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:13,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329778107] [2020-10-11 12:47:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:14,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329778107] [2020-10-11 12:47:14,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726154861] [2020-10-11 12:47:14,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:14,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:14,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:14,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:14,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:14,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:47:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:14,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:14,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:14,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311593812] [2020-10-11 12:47:14,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:14,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:14,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:14,235 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:47:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:14,793 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-11 12:47:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:47:14,794 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:14,795 INFO L225 Difference]: With dead ends: 232 [2020-10-11 12:47:14,795 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:47:14,796 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:47:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:47:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-11 12:47:14,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:47:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-11 12:47:14,799 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-11 12:47:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:14,799 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-11 12:47:14,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-11 12:47:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:14,800 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:14,800 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:15,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:15,008 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-11 12:47:15,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:15,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439636368] [2020-10-11 12:47:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439636368] [2020-10-11 12:47:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031557462] [2020-10-11 12:47:15,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:15,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:47:15,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:15,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:15,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:15,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:15,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:15,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867096497] [2020-10-11 12:47:15,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:15,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:15,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:15,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:15,314 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-11 12:47:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:15,884 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-11 12:47:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:47:15,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:15,886 INFO L225 Difference]: With dead ends: 222 [2020-10-11 12:47:15,886 INFO L226 Difference]: Without dead ends: 220 [2020-10-11 12:47:15,886 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:47:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-11 12:47:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-11 12:47:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:47:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:47:15,889 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:47:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:15,889 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:47:15,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:47:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:15,890 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:15,890 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:16,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:16,090 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:16,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:16,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-11 12:47:16,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:16,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105101286] [2020-10-11 12:47:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:16,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105101286] [2020-10-11 12:47:16,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680078834] [2020-10-11 12:47:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:16,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:16,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:16,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:16,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:16,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:47:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:16,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:16,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:16,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669470752] [2020-10-11 12:47:16,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:16,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:16,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:16,392 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:47:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:17,163 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-11 12:47:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:47:17,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:17,165 INFO L225 Difference]: With dead ends: 254 [2020-10-11 12:47:17,165 INFO L226 Difference]: Without dead ends: 246 [2020-10-11 12:47:17,165 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:47:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-11 12:47:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-11 12:47:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-11 12:47:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-11 12:47:17,170 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-11 12:47:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:17,170 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-11 12:47:17,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-11 12:47:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:17,170 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:17,171 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:17,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:17,380 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-11 12:47:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:17,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540632512] [2020-10-11 12:47:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540632512] [2020-10-11 12:47:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367704715] [2020-10-11 12:47:17,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:17,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:17,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:17,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:17,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:47:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:17,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:17,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:17,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421837674] [2020-10-11 12:47:17,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:17,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:17,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:17,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:17,658 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-11 12:47:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:18,439 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-11 12:47:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:47:18,440 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:18,440 INFO L225 Difference]: With dead ends: 246 [2020-10-11 12:47:18,440 INFO L226 Difference]: Without dead ends: 238 [2020-10-11 12:47:18,441 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:47:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-11 12:47:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-11 12:47:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:47:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-11 12:47:18,445 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-11 12:47:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:18,445 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-11 12:47:18,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-11 12:47:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:18,446 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:18,446 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:18,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-11 12:47:18,654 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:18,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-11 12:47:18,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:18,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039075058] [2020-10-11 12:47:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:18,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039075058] [2020-10-11 12:47:18,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29535116] [2020-10-11 12:47:18,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:18,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:18,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:18,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:18,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:18,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:18,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:18,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879467401] [2020-10-11 12:47:18,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:18,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:18,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:18,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:18,924 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-11 12:47:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:19,354 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-11 12:47:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:47:19,355 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:19,356 INFO L225 Difference]: With dead ends: 208 [2020-10-11 12:47:19,356 INFO L226 Difference]: Without dead ends: 206 [2020-10-11 12:47:19,357 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:47:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-11 12:47:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-11 12:47:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:47:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-11 12:47:19,359 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-11 12:47:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:19,360 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-11 12:47:19,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-11 12:47:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:19,360 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:19,360 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:19,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-11 12:47:19,567 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:19,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-11 12:47:19,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:19,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513479435] [2020-10-11 12:47:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:19,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513479435] [2020-10-11 12:47:19,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515503607] [2020-10-11 12:47:19,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:19,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:19,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:19,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812215527] [2020-10-11 12:47:19,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:19,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:19,813 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-11 12:47:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:20,351 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-11 12:47:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:47:20,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:20,352 INFO L225 Difference]: With dead ends: 215 [2020-10-11 12:47:20,352 INFO L226 Difference]: Without dead ends: 213 [2020-10-11 12:47:20,353 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:47:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-11 12:47:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-11 12:47:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:47:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-11 12:47:20,356 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-11 12:47:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:20,357 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-11 12:47:20,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-11 12:47:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:20,357 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:20,357 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:20,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-11 12:47:20,562 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:20,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-11 12:47:20,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:20,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575348055] [2020-10-11 12:47:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:20,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575348055] [2020-10-11 12:47:20,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137984338] [2020-10-11 12:47:20,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:20,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:20,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:20,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:20,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:20,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:47:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:20,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:20,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:20,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242892963] [2020-10-11 12:47:20,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:20,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:20,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:20,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:20,802 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-11 12:47:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:21,400 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-11 12:47:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:47:21,400 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:21,401 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:47:21,401 INFO L226 Difference]: Without dead ends: 228 [2020-10-11 12:47:21,402 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:47:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-11 12:47:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-11 12:47:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:47:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-11 12:47:21,405 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-11 12:47:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:21,405 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-11 12:47:21,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-11 12:47:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:21,406 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:21,406 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:21,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-11 12:47:21,607 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-11 12:47:21,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:21,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392498885] [2020-10-11 12:47:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:21,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392498885] [2020-10-11 12:47:21,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342907825] [2020-10-11 12:47:21,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:21,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:47:21,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:21,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:47:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:21,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:21,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:21,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188121836] [2020-10-11 12:47:21,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:21,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:21,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:21,897 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-11 12:47:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:22,536 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-11 12:47:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:47:22,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:22,537 INFO L225 Difference]: With dead ends: 241 [2020-10-11 12:47:22,537 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:47:22,538 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:47:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:47:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-11 12:47:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-11 12:47:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-11 12:47:22,541 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-11 12:47:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:22,541 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-11 12:47:22,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-11 12:47:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:22,541 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:22,541 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:22,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-11 12:47:22,750 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-11 12:47:22,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:22,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810159721] [2020-10-11 12:47:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:22,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810159721] [2020-10-11 12:47:22,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694078262] [2020-10-11 12:47:22,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:22,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:22,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:22,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:47:22,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:22,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:47:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:23,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:23,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:47:23,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851881821] [2020-10-11 12:47:23,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:47:23,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:47:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:47:23,002 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-11 12:47:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:23,595 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-11 12:47:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:47:23,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:47:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:23,596 INFO L225 Difference]: With dead ends: 232 [2020-10-11 12:47:23,596 INFO L226 Difference]: Without dead ends: 224 [2020-10-11 12:47:23,596 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:47:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-11 12:47:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-11 12:47:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-11 12:47:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-11 12:47:23,600 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-11 12:47:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:23,600 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-11 12:47:23,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:47:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-11 12:47:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:23,600 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:23,601 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:23,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:23,801 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-11 12:47:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:23,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688499125] [2020-10-11 12:47:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:23,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688499125] [2020-10-11 12:47:23,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537216386] [2020-10-11 12:47:23,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:23,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:47:23,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:23,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:47:23,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:24,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 12:47:24,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-11 12:47:24,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228867828] [2020-10-11 12:47:24,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 12:47:24,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 12:47:24,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:47:24,044 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 8 states. [2020-10-11 12:47:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:24,072 INFO L93 Difference]: Finished difference Result 195 states and 513 transitions. [2020-10-11 12:47:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:47:24,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-11 12:47:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:24,074 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:47:24,074 INFO L226 Difference]: Without dead ends: 188 [2020-10-11 12:47:24,075 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:47:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-11 12:47:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-11 12:47:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-11 12:47:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 500 transitions. [2020-10-11 12:47:24,078 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 500 transitions. Word has length 13 [2020-10-11 12:47:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:24,078 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 500 transitions. [2020-10-11 12:47:24,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 12:47:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 500 transitions. [2020-10-11 12:47:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:24,079 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:24,079 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:24,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-11 12:47:24,280 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-11 12:47:24,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:24,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992977536] [2020-10-11 12:47:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:24,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992977536] [2020-10-11 12:47:24,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922541153] [2020-10-11 12:47:24,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:24,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:47:24,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:24,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:24,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:24,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:24,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:24,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140340044] [2020-10-11 12:47:24,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:24,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:24,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:24,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:24,807 INFO L87 Difference]: Start difference. First operand 188 states and 500 transitions. Second operand 17 states. [2020-10-11 12:47:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:24,905 INFO L93 Difference]: Finished difference Result 249 states and 638 transitions. [2020-10-11 12:47:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:47:24,906 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:47:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:24,908 INFO L225 Difference]: With dead ends: 249 [2020-10-11 12:47:24,908 INFO L226 Difference]: Without dead ends: 241 [2020-10-11 12:47:24,908 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-11 12:47:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 197. [2020-10-11 12:47:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-11 12:47:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 521 transitions. [2020-10-11 12:47:24,914 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 521 transitions. Word has length 13 [2020-10-11 12:47:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:24,915 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 521 transitions. [2020-10-11 12:47:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 521 transitions. [2020-10-11 12:47:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:47:24,916 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:24,916 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:25,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-11 12:47:25,127 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:25,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-11 12:47:25,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:25,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674980107] [2020-10-11 12:47:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:25,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674980107] [2020-10-11 12:47:25,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879576761] [2020-10-11 12:47:25,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:25,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:25,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:25,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:47:25,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:25,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 12:47:25,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-11 12:47:25,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761024819] [2020-10-11 12:47:25,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 12:47:25,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 12:47:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:47:25,394 INFO L87 Difference]: Start difference. First operand 197 states and 521 transitions. Second operand 8 states. [2020-10-11 12:47:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:25,419 INFO L93 Difference]: Finished difference Result 278 states and 705 transitions. [2020-10-11 12:47:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:47:25,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-11 12:47:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:25,421 INFO L225 Difference]: With dead ends: 278 [2020-10-11 12:47:25,421 INFO L226 Difference]: Without dead ends: 248 [2020-10-11 12:47:25,421 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:47:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-11 12:47:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2020-10-11 12:47:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-11 12:47:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 626 transitions. [2020-10-11 12:47:25,424 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 626 transitions. Word has length 13 [2020-10-11 12:47:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:25,424 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 626 transitions. [2020-10-11 12:47:25,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 12:47:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 626 transitions. [2020-10-11 12:47:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:25,425 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:25,425 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:25,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:25,626 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-11 12:47:25,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:25,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103172917] [2020-10-11 12:47:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103172917] [2020-10-11 12:47:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819085435] [2020-10-11 12:47:25,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:25,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:25,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:25,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:25,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:25,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7614161] [2020-10-11 12:47:25,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:25,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:25,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:25,956 INFO L87 Difference]: Start difference. First operand 240 states and 626 transitions. Second operand 17 states. [2020-10-11 12:47:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:26,020 INFO L93 Difference]: Finished difference Result 275 states and 692 transitions. [2020-10-11 12:47:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:47:26,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:26,022 INFO L225 Difference]: With dead ends: 275 [2020-10-11 12:47:26,022 INFO L226 Difference]: Without dead ends: 273 [2020-10-11 12:47:26,022 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-11 12:47:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-10-11 12:47:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-11 12:47:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 654 transitions. [2020-10-11 12:47:26,026 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 654 transitions. Word has length 14 [2020-10-11 12:47:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:26,026 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 654 transitions. [2020-10-11 12:47:26,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 654 transitions. [2020-10-11 12:47:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:26,027 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:26,027 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:26,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:26,228 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:26,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-11 12:47:26,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:26,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687705673] [2020-10-11 12:47:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687705673] [2020-10-11 12:47:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080069011] [2020-10-11 12:47:26,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:26,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:26,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:26,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:26,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:26,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:26,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:26,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041322331] [2020-10-11 12:47:26,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:26,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:26,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:26,566 INFO L87 Difference]: Start difference. First operand 250 states and 654 transitions. Second operand 17 states. [2020-10-11 12:47:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:26,798 INFO L93 Difference]: Finished difference Result 295 states and 735 transitions. [2020-10-11 12:47:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:47:26,798 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:26,800 INFO L225 Difference]: With dead ends: 295 [2020-10-11 12:47:26,800 INFO L226 Difference]: Without dead ends: 292 [2020-10-11 12:47:26,800 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:47:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-11 12:47:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 251. [2020-10-11 12:47:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-11 12:47:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 657 transitions. [2020-10-11 12:47:26,806 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 657 transitions. Word has length 14 [2020-10-11 12:47:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:26,806 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 657 transitions. [2020-10-11 12:47:26,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 657 transitions. [2020-10-11 12:47:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:26,807 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:26,807 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:27,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:27,017 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-11 12:47:27,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:27,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468833996] [2020-10-11 12:47:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:27,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468833996] [2020-10-11 12:47:27,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734773632] [2020-10-11 12:47:27,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:27,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:27,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:27,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:27,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:27,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354884809] [2020-10-11 12:47:27,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:27,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:27,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:27,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:27,941 INFO L87 Difference]: Start difference. First operand 251 states and 657 transitions. Second operand 17 states. [2020-10-11 12:47:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:28,227 INFO L93 Difference]: Finished difference Result 320 states and 793 transitions. [2020-10-11 12:47:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:47:28,228 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:28,229 INFO L225 Difference]: With dead ends: 320 [2020-10-11 12:47:28,229 INFO L226 Difference]: Without dead ends: 316 [2020-10-11 12:47:28,230 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:47:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-11 12:47:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 253. [2020-10-11 12:47:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-11 12:47:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 663 transitions. [2020-10-11 12:47:28,235 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 663 transitions. Word has length 14 [2020-10-11 12:47:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:28,235 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 663 transitions. [2020-10-11 12:47:28,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 663 transitions. [2020-10-11 12:47:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:28,236 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:28,236 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:28,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:28,437 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-11 12:47:28,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:28,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809734500] [2020-10-11 12:47:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:28,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809734500] [2020-10-11 12:47:28,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927272105] [2020-10-11 12:47:28,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:28,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:28,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:28,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:28,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:28,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:28,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:28,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350754683] [2020-10-11 12:47:28,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:28,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:28,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:28,841 INFO L87 Difference]: Start difference. First operand 253 states and 663 transitions. Second operand 17 states. [2020-10-11 12:47:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:29,174 INFO L93 Difference]: Finished difference Result 316 states and 781 transitions. [2020-10-11 12:47:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:47:29,174 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:29,175 INFO L225 Difference]: With dead ends: 316 [2020-10-11 12:47:29,175 INFO L226 Difference]: Without dead ends: 313 [2020-10-11 12:47:29,175 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-11 12:47:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 255. [2020-10-11 12:47:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-11 12:47:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 669 transitions. [2020-10-11 12:47:29,180 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 669 transitions. Word has length 14 [2020-10-11 12:47:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:29,180 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 669 transitions. [2020-10-11 12:47:29,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 669 transitions. [2020-10-11 12:47:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:29,181 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:29,181 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:29,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-11 12:47:29,383 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-11 12:47:29,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:29,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158683966] [2020-10-11 12:47:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158683966] [2020-10-11 12:47:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113491470] [2020-10-11 12:47:29,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:29,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:47:29,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:29,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:33,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:33,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:33,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716262097] [2020-10-11 12:47:33,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:33,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:33,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:47:33,215 INFO L87 Difference]: Start difference. First operand 255 states and 669 transitions. Second operand 17 states. [2020-10-11 12:47:37,427 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:47:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:37,706 INFO L93 Difference]: Finished difference Result 342 states and 843 transitions. [2020-10-11 12:47:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:47:37,707 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:37,707 INFO L225 Difference]: With dead ends: 342 [2020-10-11 12:47:37,707 INFO L226 Difference]: Without dead ends: 337 [2020-10-11 12:47:37,708 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-11 12:47:37,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-11 12:47:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 256. [2020-10-11 12:47:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:47:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-11 12:47:37,712 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-11 12:47:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:37,712 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-11 12:47:37,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-11 12:47:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:37,712 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:37,712 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:37,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-11 12:47:37,913 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-11 12:47:37,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:37,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872906160] [2020-10-11 12:47:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:38,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872906160] [2020-10-11 12:47:38,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478523426] [2020-10-11 12:47:38,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:38,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:38,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:38,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:38,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:38,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:38,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:38,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227081953] [2020-10-11 12:47:38,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:38,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:38,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:38,328 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-11 12:47:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:38,703 INFO L93 Difference]: Finished difference Result 331 states and 819 transitions. [2020-10-11 12:47:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:47:38,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:38,705 INFO L225 Difference]: With dead ends: 331 [2020-10-11 12:47:38,705 INFO L226 Difference]: Without dead ends: 327 [2020-10-11 12:47:38,706 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-11 12:47:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 256. [2020-10-11 12:47:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:47:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-11 12:47:38,710 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-11 12:47:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:38,710 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-11 12:47:38,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-11 12:47:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:38,710 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:38,711 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:38,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-11 12:47:38,911 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-11 12:47:38,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517323033] [2020-10-11 12:47:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:39,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517323033] [2020-10-11 12:47:39,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186486901] [2020-10-11 12:47:39,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:39,064 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:39,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:39,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:39,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:39,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:39,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:39,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520023314] [2020-10-11 12:47:39,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:39,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:39,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:39,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:39,260 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-11 12:47:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:39,605 INFO L93 Difference]: Finished difference Result 321 states and 792 transitions. [2020-10-11 12:47:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:47:39,606 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:39,607 INFO L225 Difference]: With dead ends: 321 [2020-10-11 12:47:39,607 INFO L226 Difference]: Without dead ends: 318 [2020-10-11 12:47:39,607 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:47:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-11 12:47:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 259. [2020-10-11 12:47:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:47:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-11 12:47:39,611 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-11 12:47:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:39,611 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-11 12:47:39,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-11 12:47:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:39,612 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:39,612 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:39,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-11 12:47:39,813 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-11 12:47:39,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:39,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9406877] [2020-10-11 12:47:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:39,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9406877] [2020-10-11 12:47:39,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382874971] [2020-10-11 12:47:39,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:39,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:47:39,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:39,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:40,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:40,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:40,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721240284] [2020-10-11 12:47:40,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:40,150 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-11 12:47:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:40,528 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-11 12:47:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:40,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:40,530 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:47:40,530 INFO L226 Difference]: Without dead ends: 343 [2020-10-11 12:47:40,530 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:47:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-11 12:47:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 260. [2020-10-11 12:47:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-11 12:47:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 684 transitions. [2020-10-11 12:47:40,534 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 684 transitions. Word has length 14 [2020-10-11 12:47:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:40,535 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 684 transitions. [2020-10-11 12:47:40,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 684 transitions. [2020-10-11 12:47:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:40,535 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:40,535 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:40,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-11 12:47:40,736 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-11 12:47:40,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:40,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182180361] [2020-10-11 12:47:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182180361] [2020-10-11 12:47:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074341491] [2020-10-11 12:47:40,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:40,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:40,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:41,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:41,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:41,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631348579] [2020-10-11 12:47:41,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:41,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:41,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:41,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:41,065 INFO L87 Difference]: Start difference. First operand 260 states and 684 transitions. Second operand 17 states. [2020-10-11 12:47:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:41,383 INFO L93 Difference]: Finished difference Result 349 states and 864 transitions. [2020-10-11 12:47:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:41,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:41,384 INFO L225 Difference]: With dead ends: 349 [2020-10-11 12:47:41,384 INFO L226 Difference]: Without dead ends: 344 [2020-10-11 12:47:41,384 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-11 12:47:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 259. [2020-10-11 12:47:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:47:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-11 12:47:41,388 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-11 12:47:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:41,388 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-11 12:47:41,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-11 12:47:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:41,389 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:41,389 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:41,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-11 12:47:41,589 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-11 12:47:41,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:41,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249723478] [2020-10-11 12:47:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:41,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249723478] [2020-10-11 12:47:41,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897843709] [2020-10-11 12:47:41,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:41,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:41,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:41,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:41,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:41,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:41,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:41,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716816956] [2020-10-11 12:47:41,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:41,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:41,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:41,910 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-11 12:47:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:42,199 INFO L93 Difference]: Finished difference Result 332 states and 822 transitions. [2020-10-11 12:47:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:47:42,200 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:42,201 INFO L225 Difference]: With dead ends: 332 [2020-10-11 12:47:42,201 INFO L226 Difference]: Without dead ends: 314 [2020-10-11 12:47:42,201 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-11 12:47:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 260. [2020-10-11 12:47:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-11 12:47:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 677 transitions. [2020-10-11 12:47:42,205 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 677 transitions. Word has length 14 [2020-10-11 12:47:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:42,205 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 677 transitions. [2020-10-11 12:47:42,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 677 transitions. [2020-10-11 12:47:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:42,206 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:42,206 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:42,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:42,407 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:42,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:42,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-11 12:47:42,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:42,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066289324] [2020-10-11 12:47:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:42,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066289324] [2020-10-11 12:47:42,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186846126] [2020-10-11 12:47:42,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:42,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:47:42,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:42,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:42,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:42,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:42,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038884472] [2020-10-11 12:47:42,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:42,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:42,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:42,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:42,730 INFO L87 Difference]: Start difference. First operand 260 states and 677 transitions. Second operand 17 states. [2020-10-11 12:47:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:43,008 INFO L93 Difference]: Finished difference Result 315 states and 779 transitions. [2020-10-11 12:47:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:47:43,009 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:43,009 INFO L225 Difference]: With dead ends: 315 [2020-10-11 12:47:43,009 INFO L226 Difference]: Without dead ends: 312 [2020-10-11 12:47:43,010 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-11 12:47:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 265. [2020-10-11 12:47:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-11 12:47:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-11 12:47:43,014 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-11 12:47:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:43,014 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-11 12:47:43,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-11 12:47:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:43,015 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:43,015 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:43,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:43,216 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:43,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-11 12:47:43,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:43,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128929834] [2020-10-11 12:47:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:43,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128929834] [2020-10-11 12:47:43,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350382200] [2020-10-11 12:47:43,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:43,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:43,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:43,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:43,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:43,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:43,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:43,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000001768] [2020-10-11 12:47:43,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:43,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:43,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:43,581 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-11 12:47:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:43,892 INFO L93 Difference]: Finished difference Result 334 states and 821 transitions. [2020-10-11 12:47:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:47:43,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:43,894 INFO L225 Difference]: With dead ends: 334 [2020-10-11 12:47:43,894 INFO L226 Difference]: Without dead ends: 330 [2020-10-11 12:47:43,895 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-11 12:47:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-10-11 12:47:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:47:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 687 transitions. [2020-10-11 12:47:43,899 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 687 transitions. Word has length 14 [2020-10-11 12:47:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:43,899 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 687 transitions. [2020-10-11 12:47:43,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 687 transitions. [2020-10-11 12:47:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:43,900 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:43,900 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:44,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:44,100 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-11 12:47:44,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:44,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542725173] [2020-10-11 12:47:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:44,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542725173] [2020-10-11 12:47:44,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197778103] [2020-10-11 12:47:44,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:44,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:44,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:44,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:44,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:45,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:45,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:45,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250594026] [2020-10-11 12:47:45,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:45,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:45,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:45,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:45,120 INFO L87 Difference]: Start difference. First operand 264 states and 687 transitions. Second operand 17 states. [2020-10-11 12:47:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:45,510 INFO L93 Difference]: Finished difference Result 351 states and 859 transitions. [2020-10-11 12:47:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:45,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:45,512 INFO L225 Difference]: With dead ends: 351 [2020-10-11 12:47:45,512 INFO L226 Difference]: Without dead ends: 346 [2020-10-11 12:47:45,512 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-11 12:47:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-11 12:47:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:47:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 700 transitions. [2020-10-11 12:47:45,515 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 700 transitions. Word has length 14 [2020-10-11 12:47:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 700 transitions. [2020-10-11 12:47:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 700 transitions. [2020-10-11 12:47:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:45,516 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:45,516 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:45,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:45,720 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-11 12:47:45,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:45,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539401690] [2020-10-11 12:47:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:45,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539401690] [2020-10-11 12:47:45,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505536793] [2020-10-11 12:47:45,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:45,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:45,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:45,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:45,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:46,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:46,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:46,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524321302] [2020-10-11 12:47:46,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:46,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:46,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:46,064 INFO L87 Difference]: Start difference. First operand 269 states and 700 transitions. Second operand 17 states. [2020-10-11 12:47:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:46,388 INFO L93 Difference]: Finished difference Result 357 states and 870 transitions. [2020-10-11 12:47:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:46,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:46,389 INFO L225 Difference]: With dead ends: 357 [2020-10-11 12:47:46,389 INFO L226 Difference]: Without dead ends: 339 [2020-10-11 12:47:46,389 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:47:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-11 12:47:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 269. [2020-10-11 12:47:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:47:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 696 transitions. [2020-10-11 12:47:46,394 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 696 transitions. Word has length 14 [2020-10-11 12:47:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:46,394 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 696 transitions. [2020-10-11 12:47:46,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 696 transitions. [2020-10-11 12:47:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:46,395 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:46,395 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:46,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:46,596 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:46,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-11 12:47:46,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:46,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340365074] [2020-10-11 12:47:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:46,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340365074] [2020-10-11 12:47:46,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339512640] [2020-10-11 12:47:46,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:46,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:46,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:46,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:46,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:46,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180615178] [2020-10-11 12:47:46,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:46,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:46,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:46,983 INFO L87 Difference]: Start difference. First operand 269 states and 696 transitions. Second operand 17 states. [2020-10-11 12:47:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:47,304 INFO L93 Difference]: Finished difference Result 332 states and 820 transitions. [2020-10-11 12:47:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:47:47,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:47,306 INFO L225 Difference]: With dead ends: 332 [2020-10-11 12:47:47,306 INFO L226 Difference]: Without dead ends: 327 [2020-10-11 12:47:47,307 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-11 12:47:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 266. [2020-10-11 12:47:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:47:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 689 transitions. [2020-10-11 12:47:47,310 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 689 transitions. Word has length 14 [2020-10-11 12:47:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:47,311 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 689 transitions. [2020-10-11 12:47:47,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 689 transitions. [2020-10-11 12:47:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:47,311 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:47,311 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:47,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-11 12:47:47,512 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-11 12:47:47,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:47,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821227896] [2020-10-11 12:47:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:47,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821227896] [2020-10-11 12:47:47,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566187875] [2020-10-11 12:47:47,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:47,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:47:47,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:47,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:47,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:47,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:47,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:47,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775265614] [2020-10-11 12:47:47,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:47,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:47,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:47,975 INFO L87 Difference]: Start difference. First operand 266 states and 689 transitions. Second operand 17 states. [2020-10-11 12:47:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:48,166 INFO L93 Difference]: Finished difference Result 322 states and 792 transitions. [2020-10-11 12:47:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:47:48,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:48,167 INFO L225 Difference]: With dead ends: 322 [2020-10-11 12:47:48,167 INFO L226 Difference]: Without dead ends: 309 [2020-10-11 12:47:48,167 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:47:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-11 12:47:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 268. [2020-10-11 12:47:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:47:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-11 12:47:48,172 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-11 12:47:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:48,172 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-11 12:47:48,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-11 12:47:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:48,173 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:48,173 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:48,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-11 12:47:48,374 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-11 12:47:48,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547974222] [2020-10-11 12:47:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:48,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547974222] [2020-10-11 12:47:48,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842165133] [2020-10-11 12:47:48,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:48,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:47:48,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:48,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:48,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:48,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:48,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:48,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894242098] [2020-10-11 12:47:48,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:48,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:48,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:48,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:48,779 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-11 12:47:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:48,858 INFO L93 Difference]: Finished difference Result 305 states and 753 transitions. [2020-10-11 12:47:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:47:48,859 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:48,860 INFO L225 Difference]: With dead ends: 305 [2020-10-11 12:47:48,860 INFO L226 Difference]: Without dead ends: 303 [2020-10-11 12:47:48,861 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:47:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-11 12:47:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2020-10-11 12:47:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:47:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 709 transitions. [2020-10-11 12:47:48,866 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 709 transitions. Word has length 14 [2020-10-11 12:47:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:48,866 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 709 transitions. [2020-10-11 12:47:48,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 709 transitions. [2020-10-11 12:47:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:48,867 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:48,867 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:49,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-11 12:47:49,076 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:49,077 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-11 12:47:49,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:49,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342728373] [2020-10-11 12:47:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:49,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342728373] [2020-10-11 12:47:49,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738705844] [2020-10-11 12:47:49,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:49,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:47:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:49,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:49,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:49,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588384415] [2020-10-11 12:47:49,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:49,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:49,461 INFO L87 Difference]: Start difference. First operand 274 states and 709 transitions. Second operand 17 states. [2020-10-11 12:47:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:49,725 INFO L93 Difference]: Finished difference Result 325 states and 802 transitions. [2020-10-11 12:47:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:49,726 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:49,726 INFO L225 Difference]: With dead ends: 325 [2020-10-11 12:47:49,726 INFO L226 Difference]: Without dead ends: 322 [2020-10-11 12:47:49,727 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:47:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-11 12:47:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 272. [2020-10-11 12:47:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-11 12:47:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-11 12:47:49,731 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-11 12:47:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:49,732 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-11 12:47:49,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-11 12:47:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:49,732 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:49,732 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:49,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-11 12:47:49,933 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-11 12:47:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:49,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530899667] [2020-10-11 12:47:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530899667] [2020-10-11 12:47:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831957129] [2020-10-11 12:47:50,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:50,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:47:50,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:50,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:50,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:51,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:51,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:51,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770726783] [2020-10-11 12:47:51,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:51,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:51,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:51,084 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-11 12:47:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:51,439 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-11 12:47:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:47:51,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:51,441 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:47:51,441 INFO L226 Difference]: Without dead ends: 344 [2020-10-11 12:47:51,441 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:47:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-11 12:47:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-11 12:47:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:47:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 697 transitions. [2020-10-11 12:47:51,446 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 697 transitions. Word has length 14 [2020-10-11 12:47:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:51,446 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 697 transitions. [2020-10-11 12:47:51,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 697 transitions. [2020-10-11 12:47:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:51,446 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:51,446 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:51,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:51,647 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-11 12:47:51,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:51,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525279522] [2020-10-11 12:47:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:51,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525279522] [2020-10-11 12:47:51,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856735741] [2020-10-11 12:47:51,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:51,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:47:51,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:47:51,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:51,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:47:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:54,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:47:54,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:47:54,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17774731] [2020-10-11 12:47:54,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:47:54,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:47:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:47:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:47:54,273 INFO L87 Difference]: Start difference. First operand 270 states and 697 transitions. Second operand 17 states. [2020-10-11 12:47:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:47:54,740 INFO L93 Difference]: Finished difference Result 338 states and 827 transitions. [2020-10-11 12:47:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:47:54,740 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:47:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:47:54,741 INFO L225 Difference]: With dead ends: 338 [2020-10-11 12:47:54,741 INFO L226 Difference]: Without dead ends: 335 [2020-10-11 12:47:54,741 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:47:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-11 12:47:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-10-11 12:47:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-11 12:47:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-11 12:47:54,745 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-11 12:47:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:47:54,745 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-11 12:47:54,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:47:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-11 12:47:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:47:54,745 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:47:54,745 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:47:54,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:54,946 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:47:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:47:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-11 12:47:54,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:47:54,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46422310] [2020-10-11 12:47:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:47:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:47:55,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46422310] [2020-10-11 12:47:55,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061212618] [2020-10-11 12:47:55,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:47:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:47:55,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:47:55,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:00,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:00,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:00,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527530974] [2020-10-11 12:48:00,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:00,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:00,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:48:00,407 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-11 12:48:04,645 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:48:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:04,979 INFO L93 Difference]: Finished difference Result 369 states and 902 transitions. [2020-10-11 12:48:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:04,980 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:04,981 INFO L225 Difference]: With dead ends: 369 [2020-10-11 12:48:04,981 INFO L226 Difference]: Without dead ends: 364 [2020-10-11 12:48:04,982 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-11 12:48:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-11 12:48:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 272. [2020-10-11 12:48:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-11 12:48:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-11 12:48:04,987 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-11 12:48:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:04,987 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-11 12:48:04,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-11 12:48:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:04,988 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:04,988 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:05,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-11 12:48:05,189 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:05,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times [2020-10-11 12:48:05,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:05,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388121993] [2020-10-11 12:48:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:05,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388121993] [2020-10-11 12:48:05,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298899547] [2020-10-11 12:48:05,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:05,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:05,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:05,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:05,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:05,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:05,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:05,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477479877] [2020-10-11 12:48:05,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:05,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:05,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:05,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:05,621 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-11 12:48:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:06,093 INFO L93 Difference]: Finished difference Result 352 states and 862 transitions. [2020-10-11 12:48:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:06,094 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:06,094 INFO L225 Difference]: With dead ends: 352 [2020-10-11 12:48:06,095 INFO L226 Difference]: Without dead ends: 348 [2020-10-11 12:48:06,095 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:48:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-11 12:48:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 268. [2020-10-11 12:48:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:48:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-11 12:48:06,101 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-11 12:48:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:06,101 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-11 12:48:06,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-11 12:48:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:06,102 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:06,102 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:06,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:06,314 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times [2020-10-11 12:48:06,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:06,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697265235] [2020-10-11 12:48:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697265235] [2020-10-11 12:48:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564817646] [2020-10-11 12:48:06,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:06,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:06,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:06,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:06,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:06,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:06,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478910777] [2020-10-11 12:48:06,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:06,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:06,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:06,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:06,660 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-11 12:48:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:07,117 INFO L93 Difference]: Finished difference Result 330 states and 806 transitions. [2020-10-11 12:48:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:07,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:07,119 INFO L225 Difference]: With dead ends: 330 [2020-10-11 12:48:07,119 INFO L226 Difference]: Without dead ends: 327 [2020-10-11 12:48:07,119 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:48:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-11 12:48:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 271. [2020-10-11 12:48:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:48:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-11 12:48:07,123 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-11 12:48:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:07,123 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-11 12:48:07,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-11 12:48:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:07,124 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:07,124 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:07,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:07,325 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times [2020-10-11 12:48:07,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:07,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212200717] [2020-10-11 12:48:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:07,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212200717] [2020-10-11 12:48:07,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203316824] [2020-10-11 12:48:07,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:07,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:07,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:07,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:07,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:07,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:07,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:07,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463279918] [2020-10-11 12:48:07,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:07,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:07,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:07,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:07,678 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-11 12:48:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:08,170 INFO L93 Difference]: Finished difference Result 365 states and 887 transitions. [2020-10-11 12:48:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:48:08,171 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:08,172 INFO L225 Difference]: With dead ends: 365 [2020-10-11 12:48:08,172 INFO L226 Difference]: Without dead ends: 360 [2020-10-11 12:48:08,173 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:48:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-11 12:48:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2020-10-11 12:48:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-11 12:48:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-11 12:48:08,177 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-11 12:48:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:08,177 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-11 12:48:08,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-11 12:48:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:08,178 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:08,178 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:08,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:08,379 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times [2020-10-11 12:48:08,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:08,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52648350] [2020-10-11 12:48:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:08,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52648350] [2020-10-11 12:48:08,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132886345] [2020-10-11 12:48:08,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:08,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:08,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:08,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:08,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:08,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:08,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:08,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014079788] [2020-10-11 12:48:08,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:08,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:08,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:08,716 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-11 12:48:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:09,135 INFO L93 Difference]: Finished difference Result 363 states and 882 transitions. [2020-10-11 12:48:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:09,136 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:09,136 INFO L225 Difference]: With dead ends: 363 [2020-10-11 12:48:09,137 INFO L226 Difference]: Without dead ends: 358 [2020-10-11 12:48:09,137 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-11 12:48:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 271. [2020-10-11 12:48:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:48:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-11 12:48:09,141 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-11 12:48:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:09,141 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-11 12:48:09,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-11 12:48:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:09,142 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:09,142 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:09,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-11 12:48:09,346 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:09,347 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times [2020-10-11 12:48:09,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:09,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091212433] [2020-10-11 12:48:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091212433] [2020-10-11 12:48:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610987411] [2020-10-11 12:48:09,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:09,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:09,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:09,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:09,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:09,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:09,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:09,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799329225] [2020-10-11 12:48:09,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:09,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:09,689 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-11 12:48:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:10,040 INFO L93 Difference]: Finished difference Result 333 states and 812 transitions. [2020-10-11 12:48:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:10,040 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:10,041 INFO L225 Difference]: With dead ends: 333 [2020-10-11 12:48:10,041 INFO L226 Difference]: Without dead ends: 315 [2020-10-11 12:48:10,041 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-11 12:48:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2020-10-11 12:48:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:48:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-11 12:48:10,046 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-11 12:48:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:10,046 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-11 12:48:10,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-11 12:48:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:10,046 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:10,047 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:10,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-11 12:48:10,247 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:10,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times [2020-10-11 12:48:10,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:10,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464044588] [2020-10-11 12:48:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464044588] [2020-10-11 12:48:10,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437161947] [2020-10-11 12:48:10,414 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:10,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:10,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:10,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851730007] [2020-10-11 12:48:10,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:10,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:10,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:10,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:10,638 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-11 12:48:10,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:10,752 INFO L93 Difference]: Finished difference Result 296 states and 732 transitions. [2020-10-11 12:48:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:48:10,753 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:10,754 INFO L225 Difference]: With dead ends: 296 [2020-10-11 12:48:10,754 INFO L226 Difference]: Without dead ends: 294 [2020-10-11 12:48:10,754 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:48:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-11 12:48:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2020-10-11 12:48:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:48:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 695 transitions. [2020-10-11 12:48:10,759 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 695 transitions. Word has length 14 [2020-10-11 12:48:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:10,759 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 695 transitions. [2020-10-11 12:48:10,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 695 transitions. [2020-10-11 12:48:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:10,759 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:10,759 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-11 12:48:10,960 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times [2020-10-11 12:48:10,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:10,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930525472] [2020-10-11 12:48:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:11,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930525472] [2020-10-11 12:48:11,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82873590] [2020-10-11 12:48:11,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:11,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:11,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:11,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:11,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:11,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:11,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:11,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214459691] [2020-10-11 12:48:11,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:11,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:11,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:11,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:11,367 INFO L87 Difference]: Start difference. First operand 270 states and 695 transitions. Second operand 17 states. [2020-10-11 12:48:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:11,720 INFO L93 Difference]: Finished difference Result 328 states and 803 transitions. [2020-10-11 12:48:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:11,721 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:11,722 INFO L225 Difference]: With dead ends: 328 [2020-10-11 12:48:11,722 INFO L226 Difference]: Without dead ends: 325 [2020-10-11 12:48:11,722 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:48:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-11 12:48:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 268. [2020-10-11 12:48:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:48:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-11 12:48:11,727 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-11 12:48:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:11,727 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-11 12:48:11,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-11 12:48:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:11,727 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:11,727 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:11,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-11 12:48:11,928 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times [2020-10-11 12:48:11,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:11,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970363287] [2020-10-11 12:48:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:12,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970363287] [2020-10-11 12:48:12,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044167853] [2020-10-11 12:48:12,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:12,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:12,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:12,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:12,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:13,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:13,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:13,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396184438] [2020-10-11 12:48:13,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:13,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:13,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:13,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:13,282 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-11 12:48:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:13,664 INFO L93 Difference]: Finished difference Result 344 states and 841 transitions. [2020-10-11 12:48:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:13,665 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:13,666 INFO L225 Difference]: With dead ends: 344 [2020-10-11 12:48:13,666 INFO L226 Difference]: Without dead ends: 340 [2020-10-11 12:48:13,666 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-11 12:48:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2020-10-11 12:48:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:48:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-11 12:48:13,670 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-11 12:48:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:13,671 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-11 12:48:13,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-11 12:48:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:13,671 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:13,671 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:13,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-11 12:48:13,879 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times [2020-10-11 12:48:13,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:13,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282336751] [2020-10-11 12:48:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:13,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282336751] [2020-10-11 12:48:13,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456041573] [2020-10-11 12:48:13,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:14,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:14,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:14,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:14,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:16,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:16,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:16,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13062221] [2020-10-11 12:48:16,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:16,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:16,026 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-11 12:48:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:16,481 INFO L93 Difference]: Finished difference Result 331 states and 805 transitions. [2020-10-11 12:48:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:16,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:16,482 INFO L225 Difference]: With dead ends: 331 [2020-10-11 12:48:16,482 INFO L226 Difference]: Without dead ends: 328 [2020-10-11 12:48:16,482 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-11 12:48:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 268. [2020-10-11 12:48:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:48:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-11 12:48:16,487 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-11 12:48:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:16,487 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-11 12:48:16,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-11 12:48:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:16,488 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:16,488 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:16,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-11 12:48:16,700 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times [2020-10-11 12:48:16,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:16,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570822664] [2020-10-11 12:48:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:16,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570822664] [2020-10-11 12:48:16,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042612274] [2020-10-11 12:48:16,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:16,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:16,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:16,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:20,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:20,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:20,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988106829] [2020-10-11 12:48:20,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:20,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:48:20,572 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-11 12:48:24,859 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:48:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:25,202 INFO L93 Difference]: Finished difference Result 357 states and 866 transitions. [2020-10-11 12:48:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:25,203 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:25,204 INFO L225 Difference]: With dead ends: 357 [2020-10-11 12:48:25,204 INFO L226 Difference]: Without dead ends: 352 [2020-10-11 12:48:25,204 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-11 12:48:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-11 12:48:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2020-10-11 12:48:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:48:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-11 12:48:25,208 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-11 12:48:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:25,209 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-11 12:48:25,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-11 12:48:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:25,209 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:25,209 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:25,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:25,410 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 144 times [2020-10-11 12:48:25,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:25,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334044777] [2020-10-11 12:48:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:25,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334044777] [2020-10-11 12:48:25,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599896130] [2020-10-11 12:48:25,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:25,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:25,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:25,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:25,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:25,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:25,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:25,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963389904] [2020-10-11 12:48:25,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:25,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:25,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:25,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:25,819 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-11 12:48:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:26,315 INFO L93 Difference]: Finished difference Result 339 states and 826 transitions. [2020-10-11 12:48:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:26,315 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:26,316 INFO L225 Difference]: With dead ends: 339 [2020-10-11 12:48:26,316 INFO L226 Difference]: Without dead ends: 335 [2020-10-11 12:48:26,316 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-11 12:48:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 264. [2020-10-11 12:48:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:48:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-11 12:48:26,321 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-11 12:48:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:26,321 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-11 12:48:26,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-11 12:48:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:26,322 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:26,322 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:26,522 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 145 times [2020-10-11 12:48:26,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:26,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174601101] [2020-10-11 12:48:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174601101] [2020-10-11 12:48:26,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000869368] [2020-10-11 12:48:26,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:26,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:26,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:26,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038641085] [2020-10-11 12:48:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:26,891 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-11 12:48:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:27,035 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2020-10-11 12:48:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:27,035 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:27,036 INFO L225 Difference]: With dead ends: 287 [2020-10-11 12:48:27,036 INFO L226 Difference]: Without dead ends: 285 [2020-10-11 12:48:27,036 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:48:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-11 12:48:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 266. [2020-10-11 12:48:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:48:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-11 12:48:27,041 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-11 12:48:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:27,041 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-11 12:48:27,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-11 12:48:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:27,041 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:27,041 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:27,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:27,242 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 146 times [2020-10-11 12:48:27,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:27,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788001209] [2020-10-11 12:48:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:27,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788001209] [2020-10-11 12:48:27,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200574973] [2020-10-11 12:48:27,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:27,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:27,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:27,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:27,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:27,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:27,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243333572] [2020-10-11 12:48:27,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:27,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:27,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:27,599 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-11 12:48:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:27,939 INFO L93 Difference]: Finished difference Result 317 states and 778 transitions. [2020-10-11 12:48:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:27,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:27,940 INFO L225 Difference]: With dead ends: 317 [2020-10-11 12:48:27,940 INFO L226 Difference]: Without dead ends: 314 [2020-10-11 12:48:27,941 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-11 12:48:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2020-10-11 12:48:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:48:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-11 12:48:27,945 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-11 12:48:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:27,945 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-11 12:48:27,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-11 12:48:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:27,946 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:27,946 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:28,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:28,147 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -792188803, now seen corresponding path program 147 times [2020-10-11 12:48:28,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:28,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542206615] [2020-10-11 12:48:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:28,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542206615] [2020-10-11 12:48:28,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163217315] [2020-10-11 12:48:28,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:28,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:28,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:28,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:28,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:28,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:28,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:28,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762987548] [2020-10-11 12:48:28,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:28,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:28,561 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-11 12:48:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:28,992 INFO L93 Difference]: Finished difference Result 330 states and 807 transitions. [2020-10-11 12:48:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:28,993 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:28,993 INFO L225 Difference]: With dead ends: 330 [2020-10-11 12:48:28,993 INFO L226 Difference]: Without dead ends: 326 [2020-10-11 12:48:28,994 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:48:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-11 12:48:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 262. [2020-10-11 12:48:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-11 12:48:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-11 12:48:28,998 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-11 12:48:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:28,999 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-11 12:48:28,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-11 12:48:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:28,999 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:28,999 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:29,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:29,200 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:29,200 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 148 times [2020-10-11 12:48:29,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:29,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465164311] [2020-10-11 12:48:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:29,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465164311] [2020-10-11 12:48:29,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089317548] [2020-10-11 12:48:29,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:29,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:29,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:29,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:29,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994130950] [2020-10-11 12:48:29,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:29,560 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-11 12:48:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:29,745 INFO L93 Difference]: Finished difference Result 278 states and 694 transitions. [2020-10-11 12:48:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:48:29,745 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:29,746 INFO L225 Difference]: With dead ends: 278 [2020-10-11 12:48:29,746 INFO L226 Difference]: Without dead ends: 276 [2020-10-11 12:48:29,746 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:48:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-11 12:48:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2020-10-11 12:48:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-11 12:48:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-11 12:48:29,750 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-11 12:48:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:29,751 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-11 12:48:29,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-11 12:48:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:29,751 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:29,751 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:29,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:29,952 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 149 times [2020-10-11 12:48:29,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:29,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660245702] [2020-10-11 12:48:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:30,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660245702] [2020-10-11 12:48:30,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339259118] [2020-10-11 12:48:30,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:30,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:30,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:30,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:30,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:30,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:30,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:30,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787632161] [2020-10-11 12:48:30,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:30,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:30,293 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-11 12:48:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:30,677 INFO L93 Difference]: Finished difference Result 306 states and 753 transitions. [2020-10-11 12:48:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:30,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:30,679 INFO L225 Difference]: With dead ends: 306 [2020-10-11 12:48:30,679 INFO L226 Difference]: Without dead ends: 303 [2020-10-11 12:48:30,679 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:48:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-11 12:48:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2020-10-11 12:48:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-11 12:48:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 665 transitions. [2020-10-11 12:48:30,683 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 665 transitions. Word has length 14 [2020-10-11 12:48:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:30,683 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 665 transitions. [2020-10-11 12:48:30,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 665 transitions. [2020-10-11 12:48:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:30,683 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:30,683 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:30,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-11 12:48:30,892 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:30,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:30,892 INFO L82 PathProgramCache]: Analyzing trace with hash -770999714, now seen corresponding path program 150 times [2020-10-11 12:48:30,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:30,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258731924] [2020-10-11 12:48:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258731924] [2020-10-11 12:48:31,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764570169] [2020-10-11 12:48:31,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:31,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:31,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:31,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-11 12:48:31,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:31,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-11 12:48:31,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707044347] [2020-10-11 12:48:31,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:48:31,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:48:31,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:48:31,097 INFO L87 Difference]: Start difference. First operand 260 states and 665 transitions. Second operand 11 states. [2020-10-11 12:48:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:31,279 INFO L93 Difference]: Finished difference Result 269 states and 677 transitions. [2020-10-11 12:48:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:31,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-11 12:48:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:31,280 INFO L225 Difference]: With dead ends: 269 [2020-10-11 12:48:31,280 INFO L226 Difference]: Without dead ends: 267 [2020-10-11 12:48:31,280 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:48:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-11 12:48:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2020-10-11 12:48:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:48:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 659 transitions. [2020-10-11 12:48:31,285 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 659 transitions. Word has length 14 [2020-10-11 12:48:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:31,285 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 659 transitions. [2020-10-11 12:48:31,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:48:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 659 transitions. [2020-10-11 12:48:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:31,285 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:31,285 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:31,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:31,486 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:31,487 INFO L82 PathProgramCache]: Analyzing trace with hash -770977394, now seen corresponding path program 151 times [2020-10-11 12:48:31,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:31,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227763108] [2020-10-11 12:48:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227763108] [2020-10-11 12:48:31,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621673117] [2020-10-11 12:48:31,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:31,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:31,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:31,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:31,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614280472] [2020-10-11 12:48:31,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:31,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:31,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:31,856 INFO L87 Difference]: Start difference. First operand 256 states and 659 transitions. Second operand 17 states. [2020-10-11 12:48:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:32,354 INFO L93 Difference]: Finished difference Result 298 states and 754 transitions. [2020-10-11 12:48:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:32,355 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:32,355 INFO L225 Difference]: With dead ends: 298 [2020-10-11 12:48:32,355 INFO L226 Difference]: Without dead ends: 294 [2020-10-11 12:48:32,356 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:48:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-11 12:48:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2020-10-11 12:48:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-11 12:48:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 662 transitions. [2020-10-11 12:48:32,361 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 662 transitions. Word has length 14 [2020-10-11 12:48:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:32,361 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 662 transitions. [2020-10-11 12:48:32,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 662 transitions. [2020-10-11 12:48:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:32,362 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:32,362 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:32,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-11 12:48:32,572 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:32,573 INFO L82 PathProgramCache]: Analyzing trace with hash -770969923, now seen corresponding path program 152 times [2020-10-11 12:48:32,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:32,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354512480] [2020-10-11 12:48:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:32,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354512480] [2020-10-11 12:48:32,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255858536] [2020-10-11 12:48:32,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:32,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:32,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:32,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:32,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:32,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:32,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:32,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059909202] [2020-10-11 12:48:32,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:32,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:32,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:32,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:32,964 INFO L87 Difference]: Start difference. First operand 257 states and 662 transitions. Second operand 17 states. [2020-10-11 12:48:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:33,493 INFO L93 Difference]: Finished difference Result 313 states and 786 transitions. [2020-10-11 12:48:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:33,494 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:33,495 INFO L225 Difference]: With dead ends: 313 [2020-10-11 12:48:33,495 INFO L226 Difference]: Without dead ends: 310 [2020-10-11 12:48:33,496 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-11 12:48:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2020-10-11 12:48:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:48:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 669 transitions. [2020-10-11 12:48:33,501 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 669 transitions. Word has length 14 [2020-10-11 12:48:33,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:33,501 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 669 transitions. [2020-10-11 12:48:33,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 669 transitions. [2020-10-11 12:48:33,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:33,502 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:33,502 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:33,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:33,712 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -770948564, now seen corresponding path program 153 times [2020-10-11 12:48:33,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:33,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821596149] [2020-10-11 12:48:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:33,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821596149] [2020-10-11 12:48:33,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129824407] [2020-10-11 12:48:33,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:33,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:33,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:33,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:33,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:34,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:34,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:34,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:34,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311034520] [2020-10-11 12:48:34,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:34,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:34,078 INFO L87 Difference]: Start difference. First operand 259 states and 669 transitions. Second operand 17 states. [2020-10-11 12:48:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:34,740 INFO L93 Difference]: Finished difference Result 314 states and 795 transitions. [2020-10-11 12:48:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:34,741 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:34,742 INFO L225 Difference]: With dead ends: 314 [2020-10-11 12:48:34,742 INFO L226 Difference]: Without dead ends: 309 [2020-10-11 12:48:34,742 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:48:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-11 12:48:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2020-10-11 12:48:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:48:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 668 transitions. [2020-10-11 12:48:34,747 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 668 transitions. Word has length 14 [2020-10-11 12:48:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:34,747 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 668 transitions. [2020-10-11 12:48:34,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 668 transitions. [2020-10-11 12:48:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:34,747 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:34,747 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:34,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:34,950 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:34,950 INFO L82 PathProgramCache]: Analyzing trace with hash -770947603, now seen corresponding path program 154 times [2020-10-11 12:48:34,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:34,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350101610] [2020-10-11 12:48:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350101610] [2020-10-11 12:48:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000460158] [2020-10-11 12:48:35,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:35,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:35,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:35,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:35,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:35,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:35,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:35,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:35,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000181442] [2020-10-11 12:48:35,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:35,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:35,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:35,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:35,296 INFO L87 Difference]: Start difference. First operand 259 states and 668 transitions. Second operand 17 states. [2020-10-11 12:48:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:35,842 INFO L93 Difference]: Finished difference Result 333 states and 837 transitions. [2020-10-11 12:48:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:35,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:35,843 INFO L225 Difference]: With dead ends: 333 [2020-10-11 12:48:35,843 INFO L226 Difference]: Without dead ends: 328 [2020-10-11 12:48:35,843 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:48:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-11 12:48:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2020-10-11 12:48:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:48:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 671 transitions. [2020-10-11 12:48:35,848 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 671 transitions. Word has length 14 [2020-10-11 12:48:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:35,848 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 671 transitions. [2020-10-11 12:48:35,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 671 transitions. [2020-10-11 12:48:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:35,848 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:35,848 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:36,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-11 12:48:36,049 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:36,050 INFO L82 PathProgramCache]: Analyzing trace with hash -770739283, now seen corresponding path program 155 times [2020-10-11 12:48:36,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:36,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953216489] [2020-10-11 12:48:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:36,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953216489] [2020-10-11 12:48:36,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080429446] [2020-10-11 12:48:36,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:36,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:36,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:36,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:36,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:36,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:36,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191032058] [2020-10-11 12:48:36,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:36,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:36,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:36,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:36,453 INFO L87 Difference]: Start difference. First operand 259 states and 671 transitions. Second operand 17 states. [2020-10-11 12:48:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:36,940 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-11 12:48:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:36,940 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:36,941 INFO L225 Difference]: With dead ends: 350 [2020-10-11 12:48:36,941 INFO L226 Difference]: Without dead ends: 346 [2020-10-11 12:48:36,941 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-11 12:48:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 261. [2020-10-11 12:48:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-11 12:48:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 678 transitions. [2020-10-11 12:48:36,945 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 678 transitions. Word has length 14 [2020-10-11 12:48:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 678 transitions. [2020-10-11 12:48:36,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 678 transitions. [2020-10-11 12:48:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:36,946 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:36,946 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:37,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:37,147 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:37,147 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 156 times [2020-10-11 12:48:37,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:37,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750283077] [2020-10-11 12:48:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:37,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750283077] [2020-10-11 12:48:37,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192510476] [2020-10-11 12:48:37,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:37,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:37,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:37,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:37,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:37,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:37,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:37,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091943150] [2020-10-11 12:48:37,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:37,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:37,549 INFO L87 Difference]: Start difference. First operand 261 states and 678 transitions. Second operand 17 states. [2020-10-11 12:48:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:38,197 INFO L93 Difference]: Finished difference Result 362 states and 911 transitions. [2020-10-11 12:48:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:48:38,198 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:38,199 INFO L225 Difference]: With dead ends: 362 [2020-10-11 12:48:38,200 INFO L226 Difference]: Without dead ends: 358 [2020-10-11 12:48:38,200 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:48:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-11 12:48:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 265. [2020-10-11 12:48:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-11 12:48:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 692 transitions. [2020-10-11 12:48:38,203 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 692 transitions. Word has length 14 [2020-10-11 12:48:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:38,204 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 692 transitions. [2020-10-11 12:48:38,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 692 transitions. [2020-10-11 12:48:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:38,204 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:38,204 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:38,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:38,405 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash -770054834, now seen corresponding path program 157 times [2020-10-11 12:48:38,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:38,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561665661] [2020-10-11 12:48:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:38,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561665661] [2020-10-11 12:48:38,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656951272] [2020-10-11 12:48:38,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:38,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:38,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:38,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:38,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:38,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:38,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565349324] [2020-10-11 12:48:38,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:38,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:38,789 INFO L87 Difference]: Start difference. First operand 265 states and 692 transitions. Second operand 17 states. [2020-10-11 12:48:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:39,590 INFO L93 Difference]: Finished difference Result 322 states and 822 transitions. [2020-10-11 12:48:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:48:39,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:39,591 INFO L225 Difference]: With dead ends: 322 [2020-10-11 12:48:39,591 INFO L226 Difference]: Without dead ends: 316 [2020-10-11 12:48:39,591 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:48:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-11 12:48:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 265. [2020-10-11 12:48:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-11 12:48:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-11 12:48:39,596 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-11 12:48:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:39,596 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-11 12:48:39,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-11 12:48:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:39,596 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:39,596 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:39,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:39,797 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -770053873, now seen corresponding path program 158 times [2020-10-11 12:48:39,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:39,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519713727] [2020-10-11 12:48:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519713727] [2020-10-11 12:48:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5679853] [2020-10-11 12:48:39,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:39,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:39,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:39,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:42,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:42,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:42,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:42,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349122854] [2020-10-11 12:48:42,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:42,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:48:42,239 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-11 12:48:46,527 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-11 12:48:50,864 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-11 12:48:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:51,846 INFO L93 Difference]: Finished difference Result 395 states and 997 transitions. [2020-10-11 12:48:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:48:51,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:51,848 INFO L225 Difference]: With dead ends: 395 [2020-10-11 12:48:51,848 INFO L226 Difference]: Without dead ends: 386 [2020-10-11 12:48:51,849 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-11 12:48:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-11 12:48:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 262. [2020-10-11 12:48:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-11 12:48:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-11 12:48:51,853 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-11 12:48:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:51,853 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-11 12:48:51,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-11 12:48:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:51,854 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:51,854 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:52,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:52,056 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash -770025043, now seen corresponding path program 159 times [2020-10-11 12:48:52,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:52,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701637192] [2020-10-11 12:48:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:52,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701637192] [2020-10-11 12:48:52,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137831966] [2020-10-11 12:48:52,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:52,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:52,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:52,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:52,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:52,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:52,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:52,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:52,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659737452] [2020-10-11 12:48:52,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:52,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:52,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:52,453 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-11 12:48:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:53,291 INFO L93 Difference]: Finished difference Result 358 states and 909 transitions. [2020-10-11 12:48:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:48:53,292 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:53,292 INFO L225 Difference]: With dead ends: 358 [2020-10-11 12:48:53,292 INFO L226 Difference]: Without dead ends: 353 [2020-10-11 12:48:53,293 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=338, Invalid=718, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:48:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-11 12:48:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 262. [2020-10-11 12:48:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-11 12:48:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-11 12:48:53,297 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-11 12:48:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:53,297 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-11 12:48:53,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-11 12:48:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:53,298 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:53,298 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:53,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:53,499 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash -763589443, now seen corresponding path program 160 times [2020-10-11 12:48:53,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:53,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137164425] [2020-10-11 12:48:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:53,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137164425] [2020-10-11 12:48:53,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584127952] [2020-10-11 12:48:53,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:53,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:53,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:53,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:53,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:53,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:53,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:53,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339022521] [2020-10-11 12:48:53,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:53,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:53,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:53,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:53,914 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-11 12:48:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:54,415 INFO L93 Difference]: Finished difference Result 350 states and 871 transitions. [2020-10-11 12:48:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:48:54,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:54,417 INFO L225 Difference]: With dead ends: 350 [2020-10-11 12:48:54,417 INFO L226 Difference]: Without dead ends: 347 [2020-10-11 12:48:54,417 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-11 12:48:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 265. [2020-10-11 12:48:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-11 12:48:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 696 transitions. [2020-10-11 12:48:54,421 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 696 transitions. Word has length 14 [2020-10-11 12:48:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:54,421 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 696 transitions. [2020-10-11 12:48:54,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 696 transitions. [2020-10-11 12:48:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:54,422 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:54,422 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:54,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:54,623 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:54,623 INFO L82 PathProgramCache]: Analyzing trace with hash -763588482, now seen corresponding path program 161 times [2020-10-11 12:48:54,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:54,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810395328] [2020-10-11 12:48:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:54,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810395328] [2020-10-11 12:48:54,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045494349] [2020-10-11 12:48:54,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:54,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:54,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:54,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:54,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:58,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:58,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142947549] [2020-10-11 12:48:58,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:48:58,086 INFO L87 Difference]: Start difference. First operand 265 states and 696 transitions. Second operand 17 states. [2020-10-11 12:49:02,428 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:49:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:08,871 INFO L93 Difference]: Finished difference Result 380 states and 945 transitions. [2020-10-11 12:49:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:08,872 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:08,873 INFO L225 Difference]: With dead ends: 380 [2020-10-11 12:49:08,873 INFO L226 Difference]: Without dead ends: 375 [2020-10-11 12:49:08,874 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=193, Invalid=508, Unknown=1, NotChecked=0, Total=702 [2020-10-11 12:49:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-11 12:49:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 266. [2020-10-11 12:49:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:49:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 698 transitions. [2020-10-11 12:49:08,878 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 698 transitions. Word has length 14 [2020-10-11 12:49:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:08,879 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 698 transitions. [2020-10-11 12:49:08,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 698 transitions. [2020-10-11 12:49:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:08,879 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:08,879 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:09,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-11 12:49:09,080 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -763559652, now seen corresponding path program 162 times [2020-10-11 12:49:09,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:09,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99730101] [2020-10-11 12:49:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:09,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99730101] [2020-10-11 12:49:09,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350210273] [2020-10-11 12:49:09,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:09,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:49:09,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:09,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:09,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:09,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:09,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:09,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609557179] [2020-10-11 12:49:09,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:09,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:09,531 INFO L87 Difference]: Start difference. First operand 266 states and 698 transitions. Second operand 17 states. [2020-10-11 12:49:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:10,066 INFO L93 Difference]: Finished difference Result 366 states and 912 transitions. [2020-10-11 12:49:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:10,067 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:10,067 INFO L225 Difference]: With dead ends: 366 [2020-10-11 12:49:10,067 INFO L226 Difference]: Without dead ends: 362 [2020-10-11 12:49:10,068 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:49:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-11 12:49:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 264. [2020-10-11 12:49:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:49:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 692 transitions. [2020-10-11 12:49:10,072 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 692 transitions. Word has length 14 [2020-10-11 12:49:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:10,072 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 692 transitions. [2020-10-11 12:49:10,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 692 transitions. [2020-10-11 12:49:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:10,073 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:10,073 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:10,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-11 12:49:10,275 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:10,275 INFO L82 PathProgramCache]: Analyzing trace with hash -743033653, now seen corresponding path program 163 times [2020-10-11 12:49:10,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:10,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170784374] [2020-10-11 12:49:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:10,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170784374] [2020-10-11 12:49:10,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916983764] [2020-10-11 12:49:10,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:10,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:10,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:13,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102643094] [2020-10-11 12:49:13,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:13,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:13,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:13,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:13,823 INFO L87 Difference]: Start difference. First operand 264 states and 692 transitions. Second operand 17 states. [2020-10-11 12:49:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:14,589 INFO L93 Difference]: Finished difference Result 357 states and 890 transitions. [2020-10-11 12:49:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:49:14,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:14,591 INFO L225 Difference]: With dead ends: 357 [2020-10-11 12:49:14,591 INFO L226 Difference]: Without dead ends: 354 [2020-10-11 12:49:14,591 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:49:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-11 12:49:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 266. [2020-10-11 12:49:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:49:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 700 transitions. [2020-10-11 12:49:14,596 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 700 transitions. Word has length 14 [2020-10-11 12:49:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:14,596 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 700 transitions. [2020-10-11 12:49:14,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 700 transitions. [2020-10-11 12:49:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:14,597 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:14,597 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:14,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-11 12:49:14,800 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash -743032692, now seen corresponding path program 164 times [2020-10-11 12:49:14,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:14,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282127203] [2020-10-11 12:49:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:14,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282127203] [2020-10-11 12:49:14,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254412794] [2020-10-11 12:49:14,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:14,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:14,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:14,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:14,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:16,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:16,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:16,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569980135] [2020-10-11 12:49:16,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:16,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:16,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:16,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:16,057 INFO L87 Difference]: Start difference. First operand 266 states and 700 transitions. Second operand 17 states. [2020-10-11 12:49:20,494 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:49:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:35,288 INFO L93 Difference]: Finished difference Result 401 states and 995 transitions. [2020-10-11 12:49:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:49:35,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:35,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:35,290 INFO L225 Difference]: With dead ends: 401 [2020-10-11 12:49:35,290 INFO L226 Difference]: Without dead ends: 396 [2020-10-11 12:49:35,291 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=289, Invalid=699, Unknown=4, NotChecked=0, Total=992 [2020-10-11 12:49:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-11 12:49:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 269. [2020-10-11 12:49:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:49:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 709 transitions. [2020-10-11 12:49:35,295 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 709 transitions. Word has length 14 [2020-10-11 12:49:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:35,295 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 709 transitions. [2020-10-11 12:49:35,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 709 transitions. [2020-10-11 12:49:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:35,296 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:35,296 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:35,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:35,496 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:35,497 INFO L82 PathProgramCache]: Analyzing trace with hash -742370563, now seen corresponding path program 165 times [2020-10-11 12:49:35,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:35,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255441627] [2020-10-11 12:49:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:35,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255441627] [2020-10-11 12:49:35,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308147125] [2020-10-11 12:49:35,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:35,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:35,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:35,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:35,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:35,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:35,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:35,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587887239] [2020-10-11 12:49:35,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:35,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:35,935 INFO L87 Difference]: Start difference. First operand 269 states and 709 transitions. Second operand 17 states. [2020-10-11 12:49:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:36,751 INFO L93 Difference]: Finished difference Result 352 states and 890 transitions. [2020-10-11 12:49:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:49:36,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:36,753 INFO L225 Difference]: With dead ends: 352 [2020-10-11 12:49:36,753 INFO L226 Difference]: Without dead ends: 349 [2020-10-11 12:49:36,753 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:49:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-11 12:49:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 271. [2020-10-11 12:49:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:49:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 716 transitions. [2020-10-11 12:49:36,758 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 716 transitions. Word has length 14 [2020-10-11 12:49:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:36,758 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 716 transitions. [2020-10-11 12:49:36,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 716 transitions. [2020-10-11 12:49:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:36,759 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:36,759 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:36,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:36,960 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash -742349204, now seen corresponding path program 166 times [2020-10-11 12:49:36,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:36,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378511480] [2020-10-11 12:49:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:37,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378511480] [2020-10-11 12:49:37,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943350867] [2020-10-11 12:49:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:37,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:49:37,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:37,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:37,344 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:49:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:37,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:37,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:37,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362395301] [2020-10-11 12:49:37,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:37,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:37,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:37,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:37,396 INFO L87 Difference]: Start difference. First operand 271 states and 716 transitions. Second operand 17 states. [2020-10-11 12:49:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:38,401 INFO L93 Difference]: Finished difference Result 323 states and 827 transitions. [2020-10-11 12:49:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:49:38,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:38,403 INFO L225 Difference]: With dead ends: 323 [2020-10-11 12:49:38,403 INFO L226 Difference]: Without dead ends: 316 [2020-10-11 12:49:38,403 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=796, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 12:49:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-11 12:49:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 271. [2020-10-11 12:49:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:49:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 713 transitions. [2020-10-11 12:49:38,407 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 713 transitions. Word has length 14 [2020-10-11 12:49:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:38,407 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 713 transitions. [2020-10-11 12:49:38,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 713 transitions. [2020-10-11 12:49:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:38,408 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:38,408 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:38,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-11 12:49:38,609 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:38,609 INFO L82 PathProgramCache]: Analyzing trace with hash -742348243, now seen corresponding path program 167 times [2020-10-11 12:49:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:38,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721216026] [2020-10-11 12:49:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:38,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721216026] [2020-10-11 12:49:38,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107557309] [2020-10-11 12:49:38,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:38,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:49:38,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:38,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:38,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:38,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:39,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:39,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:39,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567067213] [2020-10-11 12:49:39,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:39,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:39,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:39,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:39,082 INFO L87 Difference]: Start difference. First operand 271 states and 713 transitions. Second operand 17 states. [2020-10-11 12:49:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:40,321 INFO L93 Difference]: Finished difference Result 384 states and 973 transitions. [2020-10-11 12:49:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:49:40,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:40,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:40,323 INFO L225 Difference]: With dead ends: 384 [2020-10-11 12:49:40,323 INFO L226 Difference]: Without dead ends: 379 [2020-10-11 12:49:40,323 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=411, Invalid=921, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:49:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-11 12:49:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 269. [2020-10-11 12:49:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:49:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 707 transitions. [2020-10-11 12:49:40,327 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 707 transitions. Word has length 14 [2020-10-11 12:49:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:40,327 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 707 transitions. [2020-10-11 12:49:40,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 707 transitions. [2020-10-11 12:49:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:40,328 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:40,328 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:40,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:40,529 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:40,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash -742340772, now seen corresponding path program 168 times [2020-10-11 12:49:40,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:40,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446464366] [2020-10-11 12:49:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:40,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446464366] [2020-10-11 12:49:40,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738548772] [2020-10-11 12:49:40,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:40,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:49:40,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:40,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:40,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:44,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:44,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:44,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235284235] [2020-10-11 12:49:44,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:44,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:44,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:44,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:49:44,013 INFO L87 Difference]: Start difference. First operand 269 states and 707 transitions. Second operand 17 states. [2020-10-11 12:49:48,380 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:49:52,630 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:49:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:53,312 INFO L93 Difference]: Finished difference Result 403 states and 1011 transitions. [2020-10-11 12:49:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 12:49:53,313 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:53,314 INFO L225 Difference]: With dead ends: 403 [2020-10-11 12:49:53,314 INFO L226 Difference]: Without dead ends: 398 [2020-10-11 12:49:53,315 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=348, Invalid=841, Unknown=1, NotChecked=0, Total=1190 [2020-10-11 12:49:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-11 12:49:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 273. [2020-10-11 12:49:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-11 12:49:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 721 transitions. [2020-10-11 12:49:53,320 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 721 transitions. Word has length 14 [2020-10-11 12:49:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:53,320 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 721 transitions. [2020-10-11 12:49:53,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 721 transitions. [2020-10-11 12:49:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:53,321 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:53,321 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:53,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2020-10-11 12:49:53,522 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:53,522 INFO L82 PathProgramCache]: Analyzing trace with hash -742319413, now seen corresponding path program 169 times [2020-10-11 12:49:53,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:53,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688017072] [2020-10-11 12:49:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:53,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688017072] [2020-10-11 12:49:53,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686202793] [2020-10-11 12:49:53,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:53,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:01,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:50:01,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:50:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:01,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:01,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:01,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637442978] [2020-10-11 12:50:01,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:01,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:01,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=179, Unknown=6, NotChecked=0, Total=272 [2020-10-11 12:50:01,629 INFO L87 Difference]: Start difference. First operand 273 states and 721 transitions. Second operand 17 states. [2020-10-11 12:50:06,010 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:50:07,182 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-11 12:50:11,322 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-11 12:50:24,392 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-11 12:50:26,852 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-11 12:50:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:26,989 INFO L93 Difference]: Finished difference Result 447 states and 1135 transitions. [2020-10-11 12:50:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:50:26,990 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:26,991 INFO L225 Difference]: With dead ends: 447 [2020-10-11 12:50:26,991 INFO L226 Difference]: Without dead ends: 437 [2020-10-11 12:50:26,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=434, Invalid=961, Unknown=11, NotChecked=0, Total=1406 [2020-10-11 12:50:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-11 12:50:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 274. [2020-10-11 12:50:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:50:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 726 transitions. [2020-10-11 12:50:26,995 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 726 transitions. Word has length 14 [2020-10-11 12:50:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:26,995 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 726 transitions. [2020-10-11 12:50:26,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:26,996 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 726 transitions. [2020-10-11 12:50:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:26,996 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:26,996 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:27,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:27,197 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:27,197 INFO L82 PathProgramCache]: Analyzing trace with hash -742318452, now seen corresponding path program 170 times [2020-10-11 12:50:27,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:27,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746558777] [2020-10-11 12:50:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:27,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746558777] [2020-10-11 12:50:27,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481428227] [2020-10-11 12:50:27,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:27,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:27,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:27,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:27,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:29,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:50:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:29,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:29,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:29,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538748586] [2020-10-11 12:50:29,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:29,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:50:29,730 INFO L87 Difference]: Start difference. First operand 274 states and 726 transitions. Second operand 17 states. [2020-10-11 12:50:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:31,489 INFO L93 Difference]: Finished difference Result 425 states and 1076 transitions. [2020-10-11 12:50:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:50:31,490 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:31,491 INFO L225 Difference]: With dead ends: 425 [2020-10-11 12:50:31,491 INFO L226 Difference]: Without dead ends: 415 [2020-10-11 12:50:31,492 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=425, Invalid=980, Unknown=1, NotChecked=0, Total=1406 [2020-10-11 12:50:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-11 12:50:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 268. [2020-10-11 12:50:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:50:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 712 transitions. [2020-10-11 12:50:31,496 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 712 transitions. Word has length 14 [2020-10-11 12:50:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:31,496 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 712 transitions. [2020-10-11 12:50:31,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 712 transitions. [2020-10-11 12:50:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:31,497 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:31,497 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:31,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:31,698 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:31,699 INFO L82 PathProgramCache]: Analyzing trace with hash -742110132, now seen corresponding path program 171 times [2020-10-11 12:50:31,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:31,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779230327] [2020-10-11 12:50:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:31,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779230327] [2020-10-11 12:50:31,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799354638] [2020-10-11 12:50:31,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:31,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:50:31,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:31,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:31,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:32,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:32,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:32,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119789170] [2020-10-11 12:50:32,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:32,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:32,181 INFO L87 Difference]: Start difference. First operand 268 states and 712 transitions. Second operand 17 states. [2020-10-11 12:50:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:32,768 INFO L93 Difference]: Finished difference Result 368 states and 929 transitions. [2020-10-11 12:50:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:50:32,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:32,770 INFO L225 Difference]: With dead ends: 368 [2020-10-11 12:50:32,770 INFO L226 Difference]: Without dead ends: 364 [2020-10-11 12:50:32,771 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:50:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-11 12:50:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 267. [2020-10-11 12:50:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-11 12:50:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 709 transitions. [2020-10-11 12:50:32,775 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 709 transitions. Word has length 14 [2020-10-11 12:50:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:32,775 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 709 transitions. [2020-10-11 12:50:32,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 709 transitions. [2020-10-11 12:50:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:32,775 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:32,775 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:32,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-11 12:50:32,976 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash -741447042, now seen corresponding path program 172 times [2020-10-11 12:50:32,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:32,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697220461] [2020-10-11 12:50:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:33,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697220461] [2020-10-11 12:50:33,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513917268] [2020-10-11 12:50:33,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:33,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:50:33,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:33,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:33,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:33,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:33,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:33,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923468646] [2020-10-11 12:50:33,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:33,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:33,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:33,471 INFO L87 Difference]: Start difference. First operand 267 states and 709 transitions. Second operand 17 states. [2020-10-11 12:50:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:34,397 INFO L93 Difference]: Finished difference Result 384 states and 970 transitions. [2020-10-11 12:50:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:50:34,398 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:34,399 INFO L225 Difference]: With dead ends: 384 [2020-10-11 12:50:34,399 INFO L226 Difference]: Without dead ends: 380 [2020-10-11 12:50:34,399 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:50:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-11 12:50:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 268. [2020-10-11 12:50:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:50:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 711 transitions. [2020-10-11 12:50:34,403 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 711 transitions. Word has length 14 [2020-10-11 12:50:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:34,403 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 711 transitions. [2020-10-11 12:50:34,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 711 transitions. [2020-10-11 12:50:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:34,403 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:34,404 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:34,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-11 12:50:34,604 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash -741424722, now seen corresponding path program 173 times [2020-10-11 12:50:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:34,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234527789] [2020-10-11 12:50:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:34,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234527789] [2020-10-11 12:50:34,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484424027] [2020-10-11 12:50:34,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:34,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:50:34,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:34,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:34,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:35,032 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:50:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:35,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:35,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:35,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183710723] [2020-10-11 12:50:35,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:35,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:35,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:35,067 INFO L87 Difference]: Start difference. First operand 268 states and 711 transitions. Second operand 17 states. [2020-10-11 12:50:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:36,537 INFO L93 Difference]: Finished difference Result 416 states and 1051 transitions. [2020-10-11 12:50:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:50:36,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:36,539 INFO L225 Difference]: With dead ends: 416 [2020-10-11 12:50:36,540 INFO L226 Difference]: Without dead ends: 410 [2020-10-11 12:50:36,540 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=426, Invalid=980, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:50:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-11 12:50:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 266. [2020-10-11 12:50:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:50:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 704 transitions. [2020-10-11 12:50:36,546 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 704 transitions. Word has length 14 [2020-10-11 12:50:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:36,546 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 704 transitions. [2020-10-11 12:50:36,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 704 transitions. [2020-10-11 12:50:36,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:36,546 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:36,547 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:36,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-11 12:50:36,751 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash -541944403, now seen corresponding path program 174 times [2020-10-11 12:50:36,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:36,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053956551] [2020-10-11 12:50:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:36,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053956551] [2020-10-11 12:50:36,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422104138] [2020-10-11 12:50:36,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:36,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:50:36,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:36,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:37,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:37,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:37,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240844420] [2020-10-11 12:50:37,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:37,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:37,167 INFO L87 Difference]: Start difference. First operand 266 states and 704 transitions. Second operand 17 states. [2020-10-11 12:50:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:37,702 INFO L93 Difference]: Finished difference Result 355 states and 889 transitions. [2020-10-11 12:50:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:50:37,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:37,703 INFO L225 Difference]: With dead ends: 355 [2020-10-11 12:50:37,704 INFO L226 Difference]: Without dead ends: 352 [2020-10-11 12:50:37,704 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:50:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-11 12:50:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 270. [2020-10-11 12:50:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:50:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-11 12:50:37,708 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-11 12:50:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:37,709 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-11 12:50:37,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-11 12:50:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:37,709 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:37,709 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:37,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-11 12:50:37,910 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash -541943442, now seen corresponding path program 175 times [2020-10-11 12:50:37,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:37,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722763250] [2020-10-11 12:50:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:38,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722763250] [2020-10-11 12:50:38,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425937050] [2020-10-11 12:50:38,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:38,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:38,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:38,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386181379] [2020-10-11 12:50:38,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:38,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:38,339 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-11 12:50:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:38,901 INFO L93 Difference]: Finished difference Result 390 states and 972 transitions. [2020-10-11 12:50:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:50:38,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:38,903 INFO L225 Difference]: With dead ends: 390 [2020-10-11 12:50:38,903 INFO L226 Difference]: Without dead ends: 385 [2020-10-11 12:50:38,903 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:50:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-11 12:50:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 271. [2020-10-11 12:50:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:50:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-11 12:50:38,907 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-11 12:50:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:38,907 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-11 12:50:38,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-11 12:50:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:38,907 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:38,908 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:39,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-11 12:50:39,108 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:39,109 INFO L82 PathProgramCache]: Analyzing trace with hash -541914612, now seen corresponding path program 176 times [2020-10-11 12:50:39,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:39,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577298579] [2020-10-11 12:50:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577298579] [2020-10-11 12:50:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186268176] [2020-10-11 12:50:39,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:39,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:39,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:39,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:39,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:39,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:39,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110545883] [2020-10-11 12:50:39,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:39,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:39,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:39,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:39,536 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-11 12:50:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:40,033 INFO L93 Difference]: Finished difference Result 392 states and 981 transitions. [2020-10-11 12:50:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:50:40,034 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:40,035 INFO L225 Difference]: With dead ends: 392 [2020-10-11 12:50:40,035 INFO L226 Difference]: Without dead ends: 387 [2020-10-11 12:50:40,035 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:50:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-11 12:50:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 270. [2020-10-11 12:50:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:50:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-11 12:50:40,040 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-11 12:50:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:40,040 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-11 12:50:40,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-11 12:50:40,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:40,041 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:40,041 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:40,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-10-11 12:50:40,241 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:40,242 INFO L82 PathProgramCache]: Analyzing trace with hash -540990130, now seen corresponding path program 177 times [2020-10-11 12:50:40,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:40,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061602894] [2020-10-11 12:50:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:40,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061602894] [2020-10-11 12:50:40,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112941781] [2020-10-11 12:50:40,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:40,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:50:40,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:40,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:40,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:40,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:40,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:40,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438967260] [2020-10-11 12:50:40,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:40,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:40,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:40,686 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-11 12:50:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:41,154 INFO L93 Difference]: Finished difference Result 359 states and 898 transitions. [2020-10-11 12:50:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:50:41,155 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:41,155 INFO L225 Difference]: With dead ends: 359 [2020-10-11 12:50:41,156 INFO L226 Difference]: Without dead ends: 343 [2020-10-11 12:50:41,156 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:50:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-11 12:50:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 268. [2020-10-11 12:50:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:50:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 710 transitions. [2020-10-11 12:50:41,161 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 710 transitions. Word has length 14 [2020-10-11 12:50:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:41,161 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 710 transitions. [2020-10-11 12:50:41,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 710 transitions. [2020-10-11 12:50:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:41,161 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:41,161 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:41,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:41,362 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash 95285087, now seen corresponding path program 178 times [2020-10-11 12:50:41,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:41,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847835825] [2020-10-11 12:50:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:41,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847835825] [2020-10-11 12:50:41,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833637654] [2020-10-11 12:50:41,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:41,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:50:41,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:41,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:41,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:41,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:41,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:41,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436220772] [2020-10-11 12:50:41,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:41,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:41,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:41,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:41,766 INFO L87 Difference]: Start difference. First operand 268 states and 710 transitions. Second operand 17 states. [2020-10-11 12:50:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:42,670 INFO L93 Difference]: Finished difference Result 369 states and 917 transitions. [2020-10-11 12:50:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:50:42,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:42,671 INFO L225 Difference]: With dead ends: 369 [2020-10-11 12:50:42,671 INFO L226 Difference]: Without dead ends: 366 [2020-10-11 12:50:42,672 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:50:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-11 12:50:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 271. [2020-10-11 12:50:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:50:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-11 12:50:42,676 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-11 12:50:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:42,676 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-11 12:50:42,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-11 12:50:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:42,677 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:42,677 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:42,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-10-11 12:50:42,877 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash 95286048, now seen corresponding path program 179 times [2020-10-11 12:50:42,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:42,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310766631] [2020-10-11 12:50:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:43,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310766631] [2020-10-11 12:50:43,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949266448] [2020-10-11 12:50:43,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:43,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:43,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:43,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:43,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:43,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:43,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:43,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669378432] [2020-10-11 12:50:43,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:43,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:43,311 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-11 12:50:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:44,170 INFO L93 Difference]: Finished difference Result 425 states and 1047 transitions. [2020-10-11 12:50:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:50:44,171 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:44,172 INFO L225 Difference]: With dead ends: 425 [2020-10-11 12:50:44,172 INFO L226 Difference]: Without dead ends: 410 [2020-10-11 12:50:44,179 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:50:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-11 12:50:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 276. [2020-10-11 12:50:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-11 12:50:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 733 transitions. [2020-10-11 12:50:44,183 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 733 transitions. Word has length 14 [2020-10-11 12:50:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:44,183 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 733 transitions. [2020-10-11 12:50:44,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 733 transitions. [2020-10-11 12:50:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:44,184 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:44,184 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:44,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:44,385 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash 95314878, now seen corresponding path program 180 times [2020-10-11 12:50:44,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:44,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380678980] [2020-10-11 12:50:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:44,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380678980] [2020-10-11 12:50:44,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590123568] [2020-10-11 12:50:44,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:44,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:50:44,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:44,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:44,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:44,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:44,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:44,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557619447] [2020-10-11 12:50:44,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:44,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:44,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:44,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:44,798 INFO L87 Difference]: Start difference. First operand 276 states and 733 transitions. Second operand 17 states. [2020-10-11 12:50:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:45,533 INFO L93 Difference]: Finished difference Result 404 states and 1006 transitions. [2020-10-11 12:50:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:50:45,535 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:45,536 INFO L225 Difference]: With dead ends: 404 [2020-10-11 12:50:45,536 INFO L226 Difference]: Without dead ends: 399 [2020-10-11 12:50:45,536 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:50:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-11 12:50:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 274. [2020-10-11 12:50:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:50:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-11 12:50:45,540 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-11 12:50:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:45,540 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-11 12:50:45,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-11 12:50:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:45,541 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:45,541 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:45,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:45,741 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash 115840877, now seen corresponding path program 181 times [2020-10-11 12:50:45,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:45,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770859393] [2020-10-11 12:50:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:45,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770859393] [2020-10-11 12:50:45,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486185463] [2020-10-11 12:50:45,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:46,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:46,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:46,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524463066] [2020-10-11 12:50:46,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:46,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:46,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:46,149 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-11 12:50:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:47,130 INFO L93 Difference]: Finished difference Result 369 states and 920 transitions. [2020-10-11 12:50:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:50:47,132 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:47,133 INFO L225 Difference]: With dead ends: 369 [2020-10-11 12:50:47,133 INFO L226 Difference]: Without dead ends: 366 [2020-10-11 12:50:47,133 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:50:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-11 12:50:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 276. [2020-10-11 12:50:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-11 12:50:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 736 transitions. [2020-10-11 12:50:47,138 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 736 transitions. Word has length 14 [2020-10-11 12:50:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:47,138 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 736 transitions. [2020-10-11 12:50:47,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 736 transitions. [2020-10-11 12:50:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:47,138 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:47,138 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:47,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:47,339 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash 115841838, now seen corresponding path program 182 times [2020-10-11 12:50:47,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:47,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910479454] [2020-10-11 12:50:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:47,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910479454] [2020-10-11 12:50:47,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864421581] [2020-10-11 12:50:47,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:47,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:47,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:47,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:47,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:47,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:47,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:47,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089062129] [2020-10-11 12:50:47,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:47,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:47,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:47,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:47,763 INFO L87 Difference]: Start difference. First operand 276 states and 736 transitions. Second operand 17 states. [2020-10-11 12:50:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:48,771 INFO L93 Difference]: Finished difference Result 401 states and 999 transitions. [2020-10-11 12:50:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 12:50:48,772 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:48,773 INFO L225 Difference]: With dead ends: 401 [2020-10-11 12:50:48,773 INFO L226 Difference]: Without dead ends: 396 [2020-10-11 12:50:48,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:50:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-11 12:50:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2020-10-11 12:50:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-11 12:50:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-10-11 12:50:48,778 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 14 [2020-10-11 12:50:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:48,778 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-10-11 12:50:48,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-10-11 12:50:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:48,778 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:48,778 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:48,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-11 12:50:48,979 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 116503967, now seen corresponding path program 183 times [2020-10-11 12:50:48,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:48,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442483264] [2020-10-11 12:50:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:49,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442483264] [2020-10-11 12:50:49,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437819250] [2020-10-11 12:50:49,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:49,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:50:49,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-11 12:50:49,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:49,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:49,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-11 12:50:49,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460487953] [2020-10-11 12:50:49,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:50:49,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:50:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:50:49,320 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 16 states. [2020-10-11 12:50:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:50,198 INFO L93 Difference]: Finished difference Result 360 states and 898 transitions. [2020-10-11 12:50:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:50:50,199 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2020-10-11 12:50:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:50,200 INFO L225 Difference]: With dead ends: 360 [2020-10-11 12:50:50,200 INFO L226 Difference]: Without dead ends: 357 [2020-10-11 12:50:50,200 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:50:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-11 12:50:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 280. [2020-10-11 12:50:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-11 12:50:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 749 transitions. [2020-10-11 12:50:50,210 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 749 transitions. Word has length 14 [2020-10-11 12:50:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:50,210 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 749 transitions. [2020-10-11 12:50:50,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:50:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 749 transitions. [2020-10-11 12:50:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:50,211 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:50,211 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:50,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:50,411 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash 116525326, now seen corresponding path program 184 times [2020-10-11 12:50:50,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:50,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566277442] [2020-10-11 12:50:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566277442] [2020-10-11 12:50:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092265967] [2020-10-11 12:50:50,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:50,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:50:50,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:50,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:50,809 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:50:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:50,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:50,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:50,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465247360] [2020-10-11 12:50:50,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:50,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:50,830 INFO L87 Difference]: Start difference. First operand 280 states and 749 transitions. Second operand 17 states. [2020-10-11 12:50:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:51,721 INFO L93 Difference]: Finished difference Result 316 states and 812 transitions. [2020-10-11 12:50:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:50:51,722 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:51,723 INFO L225 Difference]: With dead ends: 316 [2020-10-11 12:50:51,723 INFO L226 Difference]: Without dead ends: 308 [2020-10-11 12:50:51,723 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=436, Invalid=896, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:50:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-11 12:50:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 280. [2020-10-11 12:50:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-11 12:50:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 745 transitions. [2020-10-11 12:50:51,728 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 745 transitions. Word has length 14 [2020-10-11 12:50:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:51,729 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 745 transitions. [2020-10-11 12:50:51,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 745 transitions. [2020-10-11 12:50:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:51,729 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:51,729 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:51,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-11 12:50:51,938 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash 116526287, now seen corresponding path program 185 times [2020-10-11 12:50:51,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632029622] [2020-10-11 12:50:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:52,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632029622] [2020-10-11 12:50:52,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760929331] [2020-10-11 12:50:52,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:52,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:50:52,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:52,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:52,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:52,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:50:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:52,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:52,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:52,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211673762] [2020-10-11 12:50:52,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:52,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:52,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:52,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:52,367 INFO L87 Difference]: Start difference. First operand 280 states and 745 transitions. Second operand 17 states. [2020-10-11 12:50:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:53,640 INFO L93 Difference]: Finished difference Result 392 states and 995 transitions. [2020-10-11 12:50:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-11 12:50:53,642 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:53,643 INFO L225 Difference]: With dead ends: 392 [2020-10-11 12:50:53,643 INFO L226 Difference]: Without dead ends: 387 [2020-10-11 12:50:53,643 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:50:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-11 12:50:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 278. [2020-10-11 12:50:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-11 12:50:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 739 transitions. [2020-10-11 12:50:53,648 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 739 transitions. Word has length 14 [2020-10-11 12:50:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:53,648 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 739 transitions. [2020-10-11 12:50:53,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 739 transitions. [2020-10-11 12:50:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:53,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:53,648 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:53,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-11 12:50:53,849 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:53,850 INFO L82 PathProgramCache]: Analyzing trace with hash 116533758, now seen corresponding path program 186 times [2020-10-11 12:50:53,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:53,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800242000] [2020-10-11 12:50:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:53,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800242000] [2020-10-11 12:50:53,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826191848] [2020-10-11 12:50:53,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:54,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:50:54,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:54,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:54,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:54,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:54,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:54,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229461299] [2020-10-11 12:50:54,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:54,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:54,273 INFO L87 Difference]: Start difference. First operand 278 states and 739 transitions. Second operand 17 states. [2020-10-11 12:50:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:55,439 INFO L93 Difference]: Finished difference Result 409 states and 1032 transitions. [2020-10-11 12:50:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:50:55,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:55,442 INFO L225 Difference]: With dead ends: 409 [2020-10-11 12:50:55,442 INFO L226 Difference]: Without dead ends: 404 [2020-10-11 12:50:55,442 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 12:50:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-11 12:50:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-11 12:50:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-11 12:50:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-11 12:50:55,447 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-11 12:50:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:55,447 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-11 12:50:55,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-11 12:50:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:55,447 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:55,448 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:55,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:55,648 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:55,649 INFO L82 PathProgramCache]: Analyzing trace with hash 116555117, now seen corresponding path program 187 times [2020-10-11 12:50:55,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:55,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115848446] [2020-10-11 12:50:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:55,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115848446] [2020-10-11 12:50:55,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912221584] [2020-10-11 12:50:55,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:55,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:55,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:56,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:50:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:56,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:56,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:56,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568670731] [2020-10-11 12:50:56,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:56,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:56,096 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-11 12:50:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:57,418 INFO L93 Difference]: Finished difference Result 409 states and 1039 transitions. [2020-10-11 12:50:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-11 12:50:57,419 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:57,420 INFO L225 Difference]: With dead ends: 409 [2020-10-11 12:50:57,420 INFO L226 Difference]: Without dead ends: 404 [2020-10-11 12:50:57,420 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:50:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-11 12:50:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-11 12:50:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-11 12:50:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-11 12:50:57,425 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-11 12:50:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:57,425 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-11 12:50:57,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-11 12:50:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:57,425 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:57,425 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:57,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-11 12:50:57,626 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash 116556078, now seen corresponding path program 188 times [2020-10-11 12:50:57,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:57,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746914513] [2020-10-11 12:50:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:57,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746914513] [2020-10-11 12:50:57,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760162941] [2020-10-11 12:50:57,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:57,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:57,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:57,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:57,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:58,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:50:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:58,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:58,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:58,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616945685] [2020-10-11 12:50:58,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:58,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:58,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:58,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:58,057 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-11 12:50:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:59,690 INFO L93 Difference]: Finished difference Result 436 states and 1104 transitions. [2020-10-11 12:50:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:50:59,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:59,693 INFO L225 Difference]: With dead ends: 436 [2020-10-11 12:50:59,693 INFO L226 Difference]: Without dead ends: 426 [2020-10-11 12:50:59,694 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:50:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-11 12:50:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 275. [2020-10-11 12:50:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-11 12:50:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 734 transitions. [2020-10-11 12:50:59,698 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 734 transitions. Word has length 14 [2020-10-11 12:50:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:59,699 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 734 transitions. [2020-10-11 12:50:59,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 734 transitions. [2020-10-11 12:50:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:59,699 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:59,699 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:59,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-10-11 12:50:59,900 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash 116764398, now seen corresponding path program 189 times [2020-10-11 12:50:59,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:59,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594783096] [2020-10-11 12:50:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:00,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594783096] [2020-10-11 12:51:00,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336293863] [2020-10-11 12:51:00,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:00,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:51:00,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:00,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:00,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:00,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:00,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:00,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815300706] [2020-10-11 12:51:00,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:00,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:00,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:00,454 INFO L87 Difference]: Start difference. First operand 275 states and 734 transitions. Second operand 17 states. [2020-10-11 12:51:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:01,353 INFO L93 Difference]: Finished difference Result 421 states and 1054 transitions. [2020-10-11 12:51:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:51:01,355 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:01,355 INFO L225 Difference]: With dead ends: 421 [2020-10-11 12:51:01,356 INFO L226 Difference]: Without dead ends: 407 [2020-10-11 12:51:01,356 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:51:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-11 12:51:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 277. [2020-10-11 12:51:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-11 12:51:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-11 12:51:01,361 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-11 12:51:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:01,361 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-11 12:51:01,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-11 12:51:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:01,362 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:01,362 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:01,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:01,563 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash 117427488, now seen corresponding path program 190 times [2020-10-11 12:51:01,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:01,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178966190] [2020-10-11 12:51:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:01,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178966190] [2020-10-11 12:51:01,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940341857] [2020-10-11 12:51:01,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:01,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:51:01,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:01,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:01,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:01,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:01,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:01,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57268466] [2020-10-11 12:51:01,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:01,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:01,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:01,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:01,980 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-11 12:51:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:03,053 INFO L93 Difference]: Finished difference Result 410 states and 1043 transitions. [2020-10-11 12:51:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:51:03,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:03,055 INFO L225 Difference]: With dead ends: 410 [2020-10-11 12:51:03,055 INFO L226 Difference]: Without dead ends: 405 [2020-10-11 12:51:03,056 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=936, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:51:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-11 12:51:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 281. [2020-10-11 12:51:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-11 12:51:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 757 transitions. [2020-10-11 12:51:03,061 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 757 transitions. Word has length 14 [2020-10-11 12:51:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:03,061 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 757 transitions. [2020-10-11 12:51:03,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 757 transitions. [2020-10-11 12:51:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:03,062 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:03,062 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:03,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:03,263 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 117448847, now seen corresponding path program 191 times [2020-10-11 12:51:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:03,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277055025] [2020-10-11 12:51:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:03,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277055025] [2020-10-11 12:51:03,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810704376] [2020-10-11 12:51:03,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:03,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:51:03,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:03,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:51:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:03,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:03,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:03,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056647341] [2020-10-11 12:51:03,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:03,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:03,660 INFO L87 Difference]: Start difference. First operand 281 states and 757 transitions. Second operand 17 states. [2020-10-11 12:51:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:04,963 INFO L93 Difference]: Finished difference Result 431 states and 1100 transitions. [2020-10-11 12:51:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:51:04,964 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:04,965 INFO L225 Difference]: With dead ends: 431 [2020-10-11 12:51:04,965 INFO L226 Difference]: Without dead ends: 421 [2020-10-11 12:51:04,965 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:51:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-11 12:51:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 282. [2020-10-11 12:51:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-11 12:51:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 762 transitions. [2020-10-11 12:51:04,970 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 762 transitions. Word has length 14 [2020-10-11 12:51:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:04,971 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 762 transitions. [2020-10-11 12:51:04,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 762 transitions. [2020-10-11 12:51:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:04,971 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:04,971 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:05,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:05,172 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash 117449808, now seen corresponding path program 192 times [2020-10-11 12:51:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:05,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630912909] [2020-10-11 12:51:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:05,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630912909] [2020-10-11 12:51:05,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256495979] [2020-10-11 12:51:05,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:05,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:51:05,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:05,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:05,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:05,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:51:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:05,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:05,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:05,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56918630] [2020-10-11 12:51:05,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:05,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:05,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:05,599 INFO L87 Difference]: Start difference. First operand 282 states and 762 transitions. Second operand 17 states. [2020-10-11 12:51:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:06,846 INFO L93 Difference]: Finished difference Result 457 states and 1163 transitions. [2020-10-11 12:51:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:51:06,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:06,848 INFO L225 Difference]: With dead ends: 457 [2020-10-11 12:51:06,848 INFO L226 Difference]: Without dead ends: 447 [2020-10-11 12:51:06,849 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:51:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-11 12:51:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 278. [2020-10-11 12:51:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-11 12:51:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 748 transitions. [2020-10-11 12:51:06,853 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 748 transitions. Word has length 14 [2020-10-11 12:51:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:06,853 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 748 transitions. [2020-10-11 12:51:06,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 748 transitions. [2020-10-11 12:51:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:06,854 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:06,854 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:07,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:07,055 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash 117478638, now seen corresponding path program 193 times [2020-10-11 12:51:07,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:07,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037664588] [2020-10-11 12:51:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:07,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037664588] [2020-10-11 12:51:07,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198837647] [2020-10-11 12:51:07,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:07,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:07,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:07,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:51:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:07,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:07,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:07,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527214040] [2020-10-11 12:51:07,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:07,471 INFO L87 Difference]: Start difference. First operand 278 states and 748 transitions. Second operand 17 states. [2020-10-11 12:51:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:08,837 INFO L93 Difference]: Finished difference Result 441 states and 1123 transitions. [2020-10-11 12:51:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:51:08,839 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:08,839 INFO L225 Difference]: With dead ends: 441 [2020-10-11 12:51:08,839 INFO L226 Difference]: Without dead ends: 431 [2020-10-11 12:51:08,840 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:51:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-11 12:51:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 277. [2020-10-11 12:51:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-11 12:51:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 744 transitions. [2020-10-11 12:51:08,844 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 744 transitions. Word has length 14 [2020-10-11 12:51:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:08,845 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 744 transitions. [2020-10-11 12:51:08,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 744 transitions. [2020-10-11 12:51:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:08,845 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:08,845 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:09,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:09,046 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash 144470028, now seen corresponding path program 194 times [2020-10-11 12:51:09,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:09,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646865505] [2020-10-11 12:51:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:09,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646865505] [2020-10-11 12:51:09,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903260798] [2020-10-11 12:51:09,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:09,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:51:09,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:09,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:09,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:09,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:09,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263478171] [2020-10-11 12:51:09,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:09,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:09,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:09,500 INFO L87 Difference]: Start difference. First operand 277 states and 744 transitions. Second operand 17 states. [2020-10-11 12:51:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:10,631 INFO L93 Difference]: Finished difference Result 401 states and 1008 transitions. [2020-10-11 12:51:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:51:10,633 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:10,633 INFO L225 Difference]: With dead ends: 401 [2020-10-11 12:51:10,633 INFO L226 Difference]: Without dead ends: 397 [2020-10-11 12:51:10,634 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:51:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-11 12:51:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 276. [2020-10-11 12:51:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-11 12:51:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 741 transitions. [2020-10-11 12:51:10,640 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 741 transitions. Word has length 14 [2020-10-11 12:51:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:10,640 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 741 transitions. [2020-10-11 12:51:10,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 741 transitions. [2020-10-11 12:51:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:10,641 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:10,641 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:10,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-11 12:51:10,852 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 145133118, now seen corresponding path program 195 times [2020-10-11 12:51:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:10,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53236430] [2020-10-11 12:51:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:11,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53236430] [2020-10-11 12:51:11,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185821613] [2020-10-11 12:51:11,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:11,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:51:11,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:11,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:51:11,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:11,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:11,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:11,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608635215] [2020-10-11 12:51:11,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:11,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:11,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:11,324 INFO L87 Difference]: Start difference. First operand 276 states and 741 transitions. Second operand 17 states. [2020-10-11 12:51:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:12,692 INFO L93 Difference]: Finished difference Result 402 states and 1016 transitions. [2020-10-11 12:51:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:51:12,693 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:12,694 INFO L225 Difference]: With dead ends: 402 [2020-10-11 12:51:12,695 INFO L226 Difference]: Without dead ends: 398 [2020-10-11 12:51:12,695 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:51:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-11 12:51:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2020-10-11 12:51:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-11 12:51:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-11 12:51:12,700 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-11 12:51:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:12,700 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-11 12:51:12,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-11 12:51:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:12,700 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:12,700 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:12,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-11 12:51:12,901 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 145155438, now seen corresponding path program 196 times [2020-10-11 12:51:12,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:12,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784014916] [2020-10-11 12:51:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:13,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784014916] [2020-10-11 12:51:13,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818393137] [2020-10-11 12:51:13,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:13,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:51:13,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:13,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:13,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:51:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:13,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:13,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:13,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133913662] [2020-10-11 12:51:13,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:13,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:13,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:13,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:13,382 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-11 12:51:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:15,418 INFO L93 Difference]: Finished difference Result 433 states and 1104 transitions. [2020-10-11 12:51:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:51:15,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:15,421 INFO L225 Difference]: With dead ends: 433 [2020-10-11 12:51:15,421 INFO L226 Difference]: Without dead ends: 427 [2020-10-11 12:51:15,421 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 12:51:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-11 12:51:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 275. [2020-10-11 12:51:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-11 12:51:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 736 transitions. [2020-10-11 12:51:15,426 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 736 transitions. Word has length 14 [2020-10-11 12:51:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:15,426 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 736 transitions. [2020-10-11 12:51:15,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 736 transitions. [2020-10-11 12:51:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:15,427 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:15,427 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:15,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-10-11 12:51:15,628 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash 145184268, now seen corresponding path program 197 times [2020-10-11 12:51:15,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:15,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011778229] [2020-10-11 12:51:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:15,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011778229] [2020-10-11 12:51:15,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727587046] [2020-10-11 12:51:15,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:15,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:51:15,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:15,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:15,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:20,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:51:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:22,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:22,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:51:22,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403721483] [2020-10-11 12:51:22,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:51:22,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:22,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:51:22,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=220, Unknown=3, NotChecked=0, Total=306 [2020-10-11 12:51:22,307 INFO L87 Difference]: Start difference. First operand 275 states and 736 transitions. Second operand 18 states. [2020-10-11 12:51:26,508 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-11 12:51:31,106 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-11 12:51:35,292 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-10-11 12:51:37,884 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 12:51:54,835 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-11 12:51:59,274 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-10-11 12:52:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:43,903 INFO L93 Difference]: Finished difference Result 443 states and 1112 transitions. [2020-10-11 12:52:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:52:43,904 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-11 12:52:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:43,905 INFO L225 Difference]: With dead ends: 443 [2020-10-11 12:52:43,905 INFO L226 Difference]: Without dead ends: 437 [2020-10-11 12:52:43,906 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=561, Invalid=1408, Unknown=11, NotChecked=0, Total=1980 [2020-10-11 12:52:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-11 12:52:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 273. [2020-10-11 12:52:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-11 12:52:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 726 transitions. [2020-10-11 12:52:43,911 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 726 transitions. Word has length 14 [2020-10-11 12:52:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:43,911 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 726 transitions. [2020-10-11 12:52:43,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:52:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 726 transitions. [2020-10-11 12:52:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:43,912 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:43,912 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:44,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-11 12:52:44,113 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 146086430, now seen corresponding path program 198 times [2020-10-11 12:52:44,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723526500] [2020-10-11 12:52:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:44,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723526500] [2020-10-11 12:52:44,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934593761] [2020-10-11 12:52:44,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:44,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:52:44,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:44,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:44,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:44,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:44,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:44,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035160946] [2020-10-11 12:52:44,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:44,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:44,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:44,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:44,530 INFO L87 Difference]: Start difference. First operand 273 states and 726 transitions. Second operand 17 states. [2020-10-11 12:52:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:45,032 INFO L93 Difference]: Finished difference Result 351 states and 887 transitions. [2020-10-11 12:52:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:52:45,033 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:45,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:45,034 INFO L225 Difference]: With dead ends: 351 [2020-10-11 12:52:45,034 INFO L226 Difference]: Without dead ends: 338 [2020-10-11 12:52:45,034 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:52:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-11 12:52:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2020-10-11 12:52:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:52:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 727 transitions. [2020-10-11 12:52:45,038 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 727 transitions. Word has length 14 [2020-10-11 12:52:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:45,038 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 727 transitions. [2020-10-11 12:52:45,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 727 transitions. [2020-10-11 12:52:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:45,039 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:45,039 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:45,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-10-11 12:52:45,240 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:45,240 INFO L82 PathProgramCache]: Analyzing trace with hash 146108750, now seen corresponding path program 199 times [2020-10-11 12:52:45,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:45,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255588128] [2020-10-11 12:52:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:45,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255588128] [2020-10-11 12:52:45,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854821947] [2020-10-11 12:52:45,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:45,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:45,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:45,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:52:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:45,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:45,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:45,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066337006] [2020-10-11 12:52:45,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:45,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:45,654 INFO L87 Difference]: Start difference. First operand 274 states and 727 transitions. Second operand 17 states. [2020-10-11 12:52:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:46,258 INFO L93 Difference]: Finished difference Result 354 states and 891 transitions. [2020-10-11 12:52:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:52:46,260 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:46,261 INFO L225 Difference]: With dead ends: 354 [2020-10-11 12:52:46,261 INFO L226 Difference]: Without dead ends: 330 [2020-10-11 12:52:46,261 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:52:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-11 12:52:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 267. [2020-10-11 12:52:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-11 12:52:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 713 transitions. [2020-10-11 12:52:46,265 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 713 transitions. Word has length 14 [2020-10-11 12:52:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:46,265 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 713 transitions. [2020-10-11 12:52:46,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 713 transitions. [2020-10-11 12:52:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:46,266 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:46,266 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:46,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:46,467 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2034084541, now seen corresponding path program 200 times [2020-10-11 12:52:46,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:46,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162495832] [2020-10-11 12:52:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:46,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162495832] [2020-10-11 12:52:46,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904950500] [2020-10-11 12:52:46,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:46,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:52:46,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:46,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:46,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:46,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:46,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:46,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230971972] [2020-10-11 12:52:46,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:46,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:46,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:46,927 INFO L87 Difference]: Start difference. First operand 267 states and 713 transitions. Second operand 17 states. [2020-10-11 12:52:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:47,387 INFO L93 Difference]: Finished difference Result 347 states and 876 transitions. [2020-10-11 12:52:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:52:47,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:47,390 INFO L225 Difference]: With dead ends: 347 [2020-10-11 12:52:47,390 INFO L226 Difference]: Without dead ends: 344 [2020-10-11 12:52:47,391 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:52:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-11 12:52:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-11 12:52:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:52:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 722 transitions. [2020-10-11 12:52:47,395 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 722 transitions. Word has length 14 [2020-10-11 12:52:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:47,395 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 722 transitions. [2020-10-11 12:52:47,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 722 transitions. [2020-10-11 12:52:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:47,396 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:47,396 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:47,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-10-11 12:52:47,597 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2034085502, now seen corresponding path program 201 times [2020-10-11 12:52:47,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:47,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619784761] [2020-10-11 12:52:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:47,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619784761] [2020-10-11 12:52:47,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448382281] [2020-10-11 12:52:47,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:47,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:52:47,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:47,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:47,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:48,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:48,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:48,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971617675] [2020-10-11 12:52:48,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:48,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:48,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:48,064 INFO L87 Difference]: Start difference. First operand 270 states and 722 transitions. Second operand 17 states. [2020-10-11 12:52:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:48,645 INFO L93 Difference]: Finished difference Result 367 states and 918 transitions. [2020-10-11 12:52:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:52:48,646 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:48,647 INFO L225 Difference]: With dead ends: 367 [2020-10-11 12:52:48,647 INFO L226 Difference]: Without dead ends: 363 [2020-10-11 12:52:48,648 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:52:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-11 12:52:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 269. [2020-10-11 12:52:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:52:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 719 transitions. [2020-10-11 12:52:48,652 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 719 transitions. Word has length 14 [2020-10-11 12:52:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:48,652 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 719 transitions. [2020-10-11 12:52:48,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 719 transitions. [2020-10-11 12:52:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:48,653 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:48,653 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:48,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:48,853 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2034114332, now seen corresponding path program 202 times [2020-10-11 12:52:48,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:48,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383606368] [2020-10-11 12:52:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:49,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383606368] [2020-10-11 12:52:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510434169] [2020-10-11 12:52:49,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:49,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:52:49,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:49,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:49,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:49,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:49,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:49,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219748179] [2020-10-11 12:52:49,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:49,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:49,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:49,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:49,511 INFO L87 Difference]: Start difference. First operand 269 states and 719 transitions. Second operand 17 states. [2020-10-11 12:52:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:50,319 INFO L93 Difference]: Finished difference Result 391 states and 972 transitions. [2020-10-11 12:52:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:52:50,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:50,321 INFO L225 Difference]: With dead ends: 391 [2020-10-11 12:52:50,321 INFO L226 Difference]: Without dead ends: 386 [2020-10-11 12:52:50,321 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:52:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-11 12:52:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 274. [2020-10-11 12:52:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:52:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 732 transitions. [2020-10-11 12:52:50,326 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 732 transitions. Word has length 14 [2020-10-11 12:52:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:50,326 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 732 transitions. [2020-10-11 12:52:50,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 732 transitions. [2020-10-11 12:52:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:50,327 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:50,327 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:50,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:50,527 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:50,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2035009023, now seen corresponding path program 203 times [2020-10-11 12:52:50,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:50,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991481570] [2020-10-11 12:52:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:50,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991481570] [2020-10-11 12:52:50,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256362770] [2020-10-11 12:52:50,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:50,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:52:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:50,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:50,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:51,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:51,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845552443] [2020-10-11 12:52:51,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:51,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:51,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:51,003 INFO L87 Difference]: Start difference. First operand 274 states and 732 transitions. Second operand 17 states. [2020-10-11 12:52:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:51,550 INFO L93 Difference]: Finished difference Result 391 states and 967 transitions. [2020-10-11 12:52:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:52:51,551 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:51,552 INFO L225 Difference]: With dead ends: 391 [2020-10-11 12:52:51,552 INFO L226 Difference]: Without dead ends: 373 [2020-10-11 12:52:51,552 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:52:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-11 12:52:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 274. [2020-10-11 12:52:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 12:52:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-11 12:52:51,556 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-11 12:52:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:51,556 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-11 12:52:51,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-11 12:52:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:51,557 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:51,557 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:51,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:51,758 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2062713692, now seen corresponding path program 204 times [2020-10-11 12:52:51,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124339021] [2020-10-11 12:52:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:51,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124339021] [2020-10-11 12:52:51,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693344294] [2020-10-11 12:52:51,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:51,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:52:51,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:51,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:52,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:52,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:52,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127855220] [2020-10-11 12:52:52,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:52,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:52,275 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-11 12:52:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:52,812 INFO L93 Difference]: Finished difference Result 362 states and 910 transitions. [2020-10-11 12:52:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:52:52,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:52,814 INFO L225 Difference]: With dead ends: 362 [2020-10-11 12:52:52,814 INFO L226 Difference]: Without dead ends: 357 [2020-10-11 12:52:52,814 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:52:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-11 12:52:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 271. [2020-10-11 12:52:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:52:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-11 12:52:52,820 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-11 12:52:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:52,820 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-11 12:52:52,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-11 12:52:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:52,821 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:52,821 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:53,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-11 12:52:53,026 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2063667004, now seen corresponding path program 205 times [2020-10-11 12:52:53,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:53,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230144723] [2020-10-11 12:52:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:53,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230144723] [2020-10-11 12:52:53,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349946364] [2020-10-11 12:52:53,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:53,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:53,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:53,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:53,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444851028] [2020-10-11 12:52:53,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:53,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:53,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:53,550 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-11 12:52:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:53,869 INFO L93 Difference]: Finished difference Result 339 states and 853 transitions. [2020-10-11 12:52:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:52:53,871 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:53,872 INFO L225 Difference]: With dead ends: 339 [2020-10-11 12:52:53,872 INFO L226 Difference]: Without dead ends: 326 [2020-10-11 12:52:53,872 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:52:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-11 12:52:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-10-11 12:52:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-11 12:52:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 709 transitions. [2020-10-11 12:52:53,882 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 709 transitions. Word has length 14 [2020-10-11 12:52:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:53,882 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 709 transitions. [2020-10-11 12:52:53,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 709 transitions. [2020-10-11 12:52:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:53,883 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:53,883 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:54,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-10-11 12:52:54,085 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash 313362251, now seen corresponding path program 206 times [2020-10-11 12:52:54,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:54,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286150810] [2020-10-11 12:52:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:54,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286150810] [2020-10-11 12:52:54,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209442315] [2020-10-11 12:52:54,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:54,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:52:54,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:54,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:54,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:54,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:54,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:54,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430216824] [2020-10-11 12:52:54,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:54,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:54,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:54,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:54,552 INFO L87 Difference]: Start difference. First operand 265 states and 709 transitions. Second operand 17 states. [2020-10-11 12:52:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:55,064 INFO L93 Difference]: Finished difference Result 346 states and 872 transitions. [2020-10-11 12:52:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:52:55,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:55,066 INFO L225 Difference]: With dead ends: 346 [2020-10-11 12:52:55,066 INFO L226 Difference]: Without dead ends: 343 [2020-10-11 12:52:55,066 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:52:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-11 12:52:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 267. [2020-10-11 12:52:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-11 12:52:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 715 transitions. [2020-10-11 12:52:55,071 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 715 transitions. Word has length 14 [2020-10-11 12:52:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:55,071 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 715 transitions. [2020-10-11 12:52:55,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 715 transitions. [2020-10-11 12:52:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:55,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:55,072 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:55,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-10-11 12:52:55,272 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:55,273 INFO L82 PathProgramCache]: Analyzing trace with hash 313363212, now seen corresponding path program 207 times [2020-10-11 12:52:55,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:55,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247996255] [2020-10-11 12:52:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:55,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247996255] [2020-10-11 12:52:55,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500440310] [2020-10-11 12:52:55,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:55,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:52:55,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:55,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:55,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:55,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:55,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:55,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4284842] [2020-10-11 12:52:55,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:55,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:55,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:55,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:55,760 INFO L87 Difference]: Start difference. First operand 267 states and 715 transitions. Second operand 17 states. [2020-10-11 12:52:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:56,312 INFO L93 Difference]: Finished difference Result 361 states and 905 transitions. [2020-10-11 12:52:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:52:56,314 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:56,315 INFO L225 Difference]: With dead ends: 361 [2020-10-11 12:52:56,315 INFO L226 Difference]: Without dead ends: 357 [2020-10-11 12:52:56,315 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:52:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-11 12:52:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 266. [2020-10-11 12:52:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 12:52:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 712 transitions. [2020-10-11 12:52:56,320 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 712 transitions. Word has length 14 [2020-10-11 12:52:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:56,320 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 712 transitions. [2020-10-11 12:52:56,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 712 transitions. [2020-10-11 12:52:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:56,321 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:56,321 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:56,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-10-11 12:52:56,522 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 313392042, now seen corresponding path program 208 times [2020-10-11 12:52:56,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:56,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250576636] [2020-10-11 12:52:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:56,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250576636] [2020-10-11 12:52:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980995198] [2020-10-11 12:52:56,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:56,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:52:56,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:56,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:56,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:57,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:57,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:57,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286606359] [2020-10-11 12:52:57,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:57,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:57,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:57,149 INFO L87 Difference]: Start difference. First operand 266 states and 712 transitions. Second operand 17 states. [2020-10-11 12:52:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:58,059 INFO L93 Difference]: Finished difference Result 401 states and 990 transitions. [2020-10-11 12:52:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:52:58,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:58,061 INFO L225 Difference]: With dead ends: 401 [2020-10-11 12:52:58,061 INFO L226 Difference]: Without dead ends: 388 [2020-10-11 12:52:58,062 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:52:58,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-11 12:52:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2020-10-11 12:52:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:52:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 725 transitions. [2020-10-11 12:52:58,066 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 725 transitions. Word has length 14 [2020-10-11 12:52:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:58,067 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 725 transitions. [2020-10-11 12:52:58,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 725 transitions. [2020-10-11 12:52:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:58,067 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:58,067 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:58,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-10-11 12:52:58,268 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash 314286733, now seen corresponding path program 209 times [2020-10-11 12:52:58,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:58,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363916231] [2020-10-11 12:52:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:58,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363916231] [2020-10-11 12:52:58,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241095892] [2020-10-11 12:52:58,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:58,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:52:58,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:58,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:58,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:52:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:58,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:52:58,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:52:58,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616318571] [2020-10-11 12:52:58,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:52:58,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:52:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:52:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:52:58,719 INFO L87 Difference]: Start difference. First operand 271 states and 725 transitions. Second operand 17 states. [2020-10-11 12:52:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:52:59,393 INFO L93 Difference]: Finished difference Result 381 states and 946 transitions. [2020-10-11 12:52:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:52:59,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:52:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:52:59,395 INFO L225 Difference]: With dead ends: 381 [2020-10-11 12:52:59,396 INFO L226 Difference]: Without dead ends: 363 [2020-10-11 12:52:59,396 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:52:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-11 12:52:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 270. [2020-10-11 12:52:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:52:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-11 12:52:59,400 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-11 12:52:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:52:59,400 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-11 12:52:59,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:52:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-11 12:52:59,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:52:59,400 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:52:59,400 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:52:59,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-10-11 12:52:59,601 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:52:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:52:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash 950591741, now seen corresponding path program 210 times [2020-10-11 12:52:59,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:52:59,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971798317] [2020-10-11 12:52:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:52:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:52:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:52:59,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971798317] [2020-10-11 12:52:59,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289774130] [2020-10-11 12:52:59,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:52:59,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:52:59,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:52:59,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:52:59,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753014299] [2020-10-11 12:53:00,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:00,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:00,064 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-11 12:53:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:00,750 INFO L93 Difference]: Finished difference Result 354 states and 884 transitions. [2020-10-11 12:53:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:53:00,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:00,753 INFO L225 Difference]: With dead ends: 354 [2020-10-11 12:53:00,753 INFO L226 Difference]: Without dead ends: 351 [2020-10-11 12:53:00,753 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:53:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-11 12:53:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 271. [2020-10-11 12:53:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-11 12:53:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 722 transitions. [2020-10-11 12:53:00,757 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 722 transitions. Word has length 14 [2020-10-11 12:53:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 722 transitions. [2020-10-11 12:53:00,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 722 transitions. [2020-10-11 12:53:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:00,758 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:00,758 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:00,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-10-11 12:53:00,959 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash 950592702, now seen corresponding path program 211 times [2020-10-11 12:53:00,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:00,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492110136] [2020-10-11 12:53:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:01,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492110136] [2020-10-11 12:53:01,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100373316] [2020-10-11 12:53:01,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:01,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:01,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:01,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:01,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:01,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210831243] [2020-10-11 12:53:01,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:01,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:01,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:01,435 INFO L87 Difference]: Start difference. First operand 271 states and 722 transitions. Second operand 17 states. [2020-10-11 12:53:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:02,098 INFO L93 Difference]: Finished difference Result 359 states and 897 transitions. [2020-10-11 12:53:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:53:02,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:02,100 INFO L225 Difference]: With dead ends: 359 [2020-10-11 12:53:02,100 INFO L226 Difference]: Without dead ends: 355 [2020-10-11 12:53:02,100 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:53:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-11 12:53:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 270. [2020-10-11 12:53:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:53:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-11 12:53:02,105 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-11 12:53:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:02,105 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-11 12:53:02,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-11 12:53:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:02,105 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:02,106 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:02,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-10-11 12:53:02,306 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash 950621532, now seen corresponding path program 212 times [2020-10-11 12:53:02,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:02,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985320256] [2020-10-11 12:53:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:02,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985320256] [2020-10-11 12:53:02,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161128602] [2020-10-11 12:53:02,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:02,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:53:02,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:02,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:02,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:02,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:02,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:02,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447918399] [2020-10-11 12:53:02,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:02,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:02,897 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-11 12:53:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:03,895 INFO L93 Difference]: Finished difference Result 386 states and 956 transitions. [2020-10-11 12:53:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:53:03,897 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:03,898 INFO L225 Difference]: With dead ends: 386 [2020-10-11 12:53:03,898 INFO L226 Difference]: Without dead ends: 381 [2020-10-11 12:53:03,898 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:53:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-11 12:53:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 269. [2020-10-11 12:53:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:53:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-11 12:53:03,902 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-11 12:53:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:03,903 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-11 12:53:03,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-11 12:53:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:03,903 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:03,903 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:04,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:04,104 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 971147531, now seen corresponding path program 213 times [2020-10-11 12:53:04,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:04,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028063311] [2020-10-11 12:53:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:04,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028063311] [2020-10-11 12:53:04,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967807369] [2020-10-11 12:53:04,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:04,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:53:04,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:04,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:04,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:04,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:04,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:04,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032760698] [2020-10-11 12:53:04,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:04,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:04,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:04,573 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-11 12:53:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:05,415 INFO L93 Difference]: Finished difference Result 348 states and 872 transitions. [2020-10-11 12:53:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:53:05,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:05,418 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:53:05,418 INFO L226 Difference]: Without dead ends: 345 [2020-10-11 12:53:05,418 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:53:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-11 12:53:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 269. [2020-10-11 12:53:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:53:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-11 12:53:05,422 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-11 12:53:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:05,423 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-11 12:53:05,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-11 12:53:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:05,423 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:05,423 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:05,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:05,624 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash 971148492, now seen corresponding path program 214 times [2020-10-11 12:53:05,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:05,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938024644] [2020-10-11 12:53:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:05,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938024644] [2020-10-11 12:53:05,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802063907] [2020-10-11 12:53:05,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:05,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:53:05,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:05,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:05,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:06,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:06,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:06,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116449996] [2020-10-11 12:53:06,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:06,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:06,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:06,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:06,106 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-11 12:53:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:06,938 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-11 12:53:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:53:06,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:06,940 INFO L225 Difference]: With dead ends: 350 [2020-10-11 12:53:06,940 INFO L226 Difference]: Without dead ends: 346 [2020-10-11 12:53:06,940 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:53:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-11 12:53:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-11 12:53:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:53:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 714 transitions. [2020-10-11 12:53:06,946 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 714 transitions. Word has length 14 [2020-10-11 12:53:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:06,946 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 714 transitions. [2020-10-11 12:53:06,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 714 transitions. [2020-10-11 12:53:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:06,947 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:06,947 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:07,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:07,160 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:07,160 INFO L82 PathProgramCache]: Analyzing trace with hash 971810621, now seen corresponding path program 215 times [2020-10-11 12:53:07,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:07,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286839311] [2020-10-11 12:53:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:07,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286839311] [2020-10-11 12:53:07,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664800644] [2020-10-11 12:53:07,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:07,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 12:53:07,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:07,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:07,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:07,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:07,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:07,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190561801] [2020-10-11 12:53:07,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:07,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:07,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:07,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:07,619 INFO L87 Difference]: Start difference. First operand 269 states and 714 transitions. Second operand 17 states. [2020-10-11 12:53:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:08,546 INFO L93 Difference]: Finished difference Result 334 states and 840 transitions. [2020-10-11 12:53:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:53:08,548 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:08,548 INFO L225 Difference]: With dead ends: 334 [2020-10-11 12:53:08,548 INFO L226 Difference]: Without dead ends: 331 [2020-10-11 12:53:08,549 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:53:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-11 12:53:08,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 269. [2020-10-11 12:53:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-11 12:53:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 713 transitions. [2020-10-11 12:53:08,553 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 713 transitions. Word has length 14 [2020-10-11 12:53:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:08,553 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 713 transitions. [2020-10-11 12:53:08,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 713 transitions. [2020-10-11 12:53:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:08,553 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:08,554 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:08,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-10-11 12:53:08,754 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash 971831980, now seen corresponding path program 216 times [2020-10-11 12:53:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:08,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628503052] [2020-10-11 12:53:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:08,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628503052] [2020-10-11 12:53:08,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486475221] [2020-10-11 12:53:08,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:08,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:53:08,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:08,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:08,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:09,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:09,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:09,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:09,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513522985] [2020-10-11 12:53:09,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:09,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:09,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:09,183 INFO L87 Difference]: Start difference. First operand 269 states and 713 transitions. Second operand 17 states. [2020-10-11 12:53:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:09,786 INFO L93 Difference]: Finished difference Result 284 states and 731 transitions. [2020-10-11 12:53:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:53:09,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:09,788 INFO L225 Difference]: With dead ends: 284 [2020-10-11 12:53:09,788 INFO L226 Difference]: Without dead ends: 274 [2020-10-11 12:53:09,788 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:53:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-11 12:53:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 261. [2020-10-11 12:53:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-11 12:53:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 686 transitions. [2020-10-11 12:53:09,792 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 686 transitions. Word has length 14 [2020-10-11 12:53:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:09,792 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 686 transitions. [2020-10-11 12:53:09,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 686 transitions. [2020-10-11 12:53:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:09,793 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:09,793 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:09,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:09,994 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash 971832941, now seen corresponding path program 217 times [2020-10-11 12:53:09,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:09,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957676007] [2020-10-11 12:53:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957676007] [2020-10-11 12:53:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440087095] [2020-10-11 12:53:10,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:10,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:10,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:10,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:53:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:10,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:10,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:10,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127138006] [2020-10-11 12:53:10,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:10,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:10,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:10,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:10,492 INFO L87 Difference]: Start difference. First operand 261 states and 686 transitions. Second operand 17 states. [2020-10-11 12:53:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:11,749 INFO L93 Difference]: Finished difference Result 365 states and 917 transitions. [2020-10-11 12:53:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:53:11,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:11,753 INFO L225 Difference]: With dead ends: 365 [2020-10-11 12:53:11,753 INFO L226 Difference]: Without dead ends: 360 [2020-10-11 12:53:11,753 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:53:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-11 12:53:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 259. [2020-10-11 12:53:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-11 12:53:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 680 transitions. [2020-10-11 12:53:11,757 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 680 transitions. Word has length 14 [2020-10-11 12:53:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:11,757 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 680 transitions. [2020-10-11 12:53:11,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:11,762 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 680 transitions. [2020-10-11 12:53:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:11,762 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:11,762 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:11,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-10-11 12:53:11,963 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash 971840412, now seen corresponding path program 218 times [2020-10-11 12:53:11,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:11,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610986586] [2020-10-11 12:53:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:12,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610986586] [2020-10-11 12:53:12,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119404807] [2020-10-11 12:53:12,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:12,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:53:12,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:12,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:12,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:12,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:12,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:12,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784109804] [2020-10-11 12:53:12,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:12,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:12,507 INFO L87 Difference]: Start difference. First operand 259 states and 680 transitions. Second operand 17 states. [2020-10-11 12:53:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:13,554 INFO L93 Difference]: Finished difference Result 357 states and 889 transitions. [2020-10-11 12:53:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 12:53:13,556 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:13,557 INFO L225 Difference]: With dead ends: 357 [2020-10-11 12:53:13,557 INFO L226 Difference]: Without dead ends: 353 [2020-10-11 12:53:13,557 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 12:53:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-11 12:53:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 261. [2020-10-11 12:53:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-11 12:53:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-11 12:53:13,561 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-11 12:53:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:13,561 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-11 12:53:13,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-11 12:53:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:13,562 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:13,562 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:13,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-10-11 12:53:13,762 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 971861771, now seen corresponding path program 219 times [2020-10-11 12:53:13,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:13,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168321961] [2020-10-11 12:53:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:13,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168321961] [2020-10-11 12:53:13,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109280265] [2020-10-11 12:53:13,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:13,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:53:13,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:13,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:13,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:14,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:14,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:14,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:14,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065985334] [2020-10-11 12:53:14,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:14,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:14,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:14,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:14,276 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-11 12:53:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:15,757 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-11 12:53:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:53:15,759 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:15,760 INFO L225 Difference]: With dead ends: 385 [2020-10-11 12:53:15,760 INFO L226 Difference]: Without dead ends: 380 [2020-10-11 12:53:15,760 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:53:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-11 12:53:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 261. [2020-10-11 12:53:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-11 12:53:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-11 12:53:15,764 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-11 12:53:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:15,764 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-11 12:53:15,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-11 12:53:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:15,765 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:15,765 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:15,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:15,965 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 971862732, now seen corresponding path program 220 times [2020-10-11 12:53:15,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:15,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127029242] [2020-10-11 12:53:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127029242] [2020-10-11 12:53:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893732412] [2020-10-11 12:53:16,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:16,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:53:16,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:16,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:53:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:16,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:16,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:16,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285610536] [2020-10-11 12:53:16,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:16,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:16,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:16,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:16,470 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-11 12:53:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:17,962 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-11 12:53:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:53:17,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:17,966 INFO L225 Difference]: With dead ends: 385 [2020-10-11 12:53:17,966 INFO L226 Difference]: Without dead ends: 379 [2020-10-11 12:53:17,967 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=476, Invalid=1084, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:53:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-11 12:53:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 257. [2020-10-11 12:53:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-11 12:53:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 674 transitions. [2020-10-11 12:53:17,971 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 674 transitions. Word has length 14 [2020-10-11 12:53:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:17,971 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 674 transitions. [2020-10-11 12:53:17,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 674 transitions. [2020-10-11 12:53:17,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:17,972 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:17,972 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:18,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:18,182 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash 972071052, now seen corresponding path program 221 times [2020-10-11 12:53:18,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:18,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199676729] [2020-10-11 12:53:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:18,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199676729] [2020-10-11 12:53:18,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110408399] [2020-10-11 12:53:18,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:18,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:53:18,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:18,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:18,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:18,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:18,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:18,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557161762] [2020-10-11 12:53:18,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:18,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:18,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:18,760 INFO L87 Difference]: Start difference. First operand 257 states and 674 transitions. Second operand 17 states. [2020-10-11 12:53:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:20,075 INFO L93 Difference]: Finished difference Result 398 states and 973 transitions. [2020-10-11 12:53:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:53:20,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:20,077 INFO L225 Difference]: With dead ends: 398 [2020-10-11 12:53:20,077 INFO L226 Difference]: Without dead ends: 380 [2020-10-11 12:53:20,077 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:53:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-11 12:53:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 264. [2020-10-11 12:53:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:53:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 694 transitions. [2020-10-11 12:53:20,082 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 694 transitions. Word has length 14 [2020-10-11 12:53:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:20,082 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 694 transitions. [2020-10-11 12:53:20,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 694 transitions. [2020-10-11 12:53:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:20,082 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:20,082 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:20,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-10-11 12:53:20,283 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash 972734142, now seen corresponding path program 222 times [2020-10-11 12:53:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:20,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564508850] [2020-10-11 12:53:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:20,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564508850] [2020-10-11 12:53:20,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700413704] [2020-10-11 12:53:20,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:20,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:53:20,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:20,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:20,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:20,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:20,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:20,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031811246] [2020-10-11 12:53:20,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:20,884 INFO L87 Difference]: Start difference. First operand 264 states and 694 transitions. Second operand 17 states. [2020-10-11 12:53:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:22,603 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-11 12:53:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:53:22,605 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:22,606 INFO L225 Difference]: With dead ends: 380 [2020-10-11 12:53:22,606 INFO L226 Difference]: Without dead ends: 375 [2020-10-11 12:53:22,607 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=397, Invalid=935, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:53:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-11 12:53:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 268. [2020-10-11 12:53:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-11 12:53:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 708 transitions. [2020-10-11 12:53:22,612 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 708 transitions. Word has length 14 [2020-10-11 12:53:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:22,612 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 708 transitions. [2020-10-11 12:53:22,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 708 transitions. [2020-10-11 12:53:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:22,612 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:22,613 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:22,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:22,813 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:22,814 INFO L82 PathProgramCache]: Analyzing trace with hash 972755501, now seen corresponding path program 223 times [2020-10-11 12:53:22,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:22,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884310421] [2020-10-11 12:53:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:22,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884310421] [2020-10-11 12:53:22,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403088874] [2020-10-11 12:53:22,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:23,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:23,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:23,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:23,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:23,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059664978] [2020-10-11 12:53:23,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:23,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:23,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:23,364 INFO L87 Difference]: Start difference. First operand 268 states and 708 transitions. Second operand 17 states. [2020-10-11 12:53:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:25,388 INFO L93 Difference]: Finished difference Result 376 states and 942 transitions. [2020-10-11 12:53:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:53:25,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:25,390 INFO L225 Difference]: With dead ends: 376 [2020-10-11 12:53:25,390 INFO L226 Difference]: Without dead ends: 367 [2020-10-11 12:53:25,390 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=528, Invalid=1278, Unknown=0, NotChecked=0, Total=1806 [2020-10-11 12:53:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-11 12:53:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 270. [2020-10-11 12:53:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-11 12:53:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-11 12:53:25,395 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-11 12:53:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:25,395 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-11 12:53:25,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-11 12:53:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:25,396 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:25,396 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:25,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2020-10-11 12:53:25,597 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 972756462, now seen corresponding path program 224 times [2020-10-11 12:53:25,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:25,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314465247] [2020-10-11 12:53:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314465247] [2020-10-11 12:53:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395255462] [2020-10-11 12:53:25,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:25,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:53:25,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:25,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:30,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:30,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:30,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:30,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205985835] [2020-10-11 12:53:30,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:30,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2020-10-11 12:53:30,294 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-11 12:53:35,048 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-11 12:53:39,231 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-11 12:53:43,532 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-11 12:53:47,827 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-11 12:53:49,941 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 12:53:54,572 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-11 12:53:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:55,447 INFO L93 Difference]: Finished difference Result 424 states and 1059 transitions. [2020-10-11 12:53:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:53:55,449 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:55,450 INFO L225 Difference]: With dead ends: 424 [2020-10-11 12:53:55,451 INFO L226 Difference]: Without dead ends: 414 [2020-10-11 12:53:55,451 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=530, Invalid=1274, Unknown=2, NotChecked=0, Total=1806 [2020-10-11 12:53:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-11 12:53:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 264. [2020-10-11 12:53:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-11 12:53:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 700 transitions. [2020-10-11 12:53:55,455 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 700 transitions. Word has length 14 [2020-10-11 12:53:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:55,455 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 700 transitions. [2020-10-11 12:53:55,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 700 transitions. [2020-10-11 12:53:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:55,456 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:55,456 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:55,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:55,658 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash 972785292, now seen corresponding path program 225 times [2020-10-11 12:53:55,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:55,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138237098] [2020-10-11 12:53:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:55,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138237098] [2020-10-11 12:53:55,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282891104] [2020-10-11 12:53:55,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:55,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:53:55,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:55,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:55,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:56,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:56,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:56,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:56,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948059268] [2020-10-11 12:53:56,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:56,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:56,223 INFO L87 Difference]: Start difference. First operand 264 states and 700 transitions. Second operand 17 states. [2020-10-11 12:53:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:58,605 INFO L93 Difference]: Finished difference Result 424 states and 1057 transitions. [2020-10-11 12:53:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:53:58,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:58,608 INFO L225 Difference]: With dead ends: 424 [2020-10-11 12:53:58,608 INFO L226 Difference]: Without dead ends: 414 [2020-10-11 12:53:58,608 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 12:53:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-11 12:53:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 263. [2020-10-11 12:53:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-11 12:53:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-11 12:53:58,613 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-11 12:53:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:58,613 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-11 12:53:58,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-11 12:53:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:58,614 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:58,614 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:58,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:58,815 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 979221853, now seen corresponding path program 226 times [2020-10-11 12:53:58,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:58,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129955065] [2020-10-11 12:53:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129955065] [2020-10-11 12:53:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708591536] [2020-10-11 12:53:58,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:53:59,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:53:59,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:59,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:59,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:59,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:59,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:59,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113426426] [2020-10-11 12:53:59,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:59,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:53:59,308 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-11 12:54:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:00,166 INFO L93 Difference]: Finished difference Result 374 states and 921 transitions. [2020-10-11 12:54:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:54:00,168 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:00,169 INFO L225 Difference]: With dead ends: 374 [2020-10-11 12:54:00,169 INFO L226 Difference]: Without dead ends: 360 [2020-10-11 12:54:00,170 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:54:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-11 12:54:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 263. [2020-10-11 12:54:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-11 12:54:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-11 12:54:00,173 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-11 12:54:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:00,173 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-11 12:54:00,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-11 12:54:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:00,177 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:00,177 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:00,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:00,379 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash 999776682, now seen corresponding path program 227 times [2020-10-11 12:54:00,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:00,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119696255] [2020-10-11 12:54:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:00,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119696255] [2020-10-11 12:54:00,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116821421] [2020-10-11 12:54:00,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:00,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:54:00,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:00,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:00,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:00,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:00,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741859436] [2020-10-11 12:54:00,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:00,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:00,898 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-11 12:54:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:02,244 INFO L93 Difference]: Finished difference Result 399 states and 977 transitions. [2020-10-11 12:54:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:54:02,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:02,248 INFO L225 Difference]: With dead ends: 399 [2020-10-11 12:54:02,248 INFO L226 Difference]: Without dead ends: 394 [2020-10-11 12:54:02,249 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:54:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-11 12:54:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 256. [2020-10-11 12:54:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:54:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-11 12:54:02,255 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-11 12:54:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:02,255 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-11 12:54:02,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-11 12:54:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:02,256 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:02,256 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:02,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-10-11 12:54:02,460 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 999777643, now seen corresponding path program 228 times [2020-10-11 12:54:02,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:02,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707006903] [2020-10-11 12:54:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:02,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707006903] [2020-10-11 12:54:02,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686986668] [2020-10-11 12:54:02,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:02,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:54:02,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:02,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:02,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:02,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:02,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:02,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367639747] [2020-10-11 12:54:02,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:02,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:02,983 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-11 12:54:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:04,123 INFO L93 Difference]: Finished difference Result 396 states and 966 transitions. [2020-10-11 12:54:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:54:04,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:04,126 INFO L225 Difference]: With dead ends: 396 [2020-10-11 12:54:04,126 INFO L226 Difference]: Without dead ends: 382 [2020-10-11 12:54:04,127 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=806, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:54:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-11 12:54:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 254. [2020-10-11 12:54:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:54:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 675 transitions. [2020-10-11 12:54:04,131 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 675 transitions. Word has length 14 [2020-10-11 12:54:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:04,131 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 675 transitions. [2020-10-11 12:54:04,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 675 transitions. [2020-10-11 12:54:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:04,131 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:04,132 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:04,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-10-11 12:54:04,333 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1000439772, now seen corresponding path program 229 times [2020-10-11 12:54:04,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:04,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291574410] [2020-10-11 12:54:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:04,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291574410] [2020-10-11 12:54:04,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947869419] [2020-10-11 12:54:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:04,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:04,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:04,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960083627] [2020-10-11 12:54:04,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:04,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:04,857 INFO L87 Difference]: Start difference. First operand 254 states and 675 transitions. Second operand 17 states. [2020-10-11 12:54:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:06,318 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-11 12:54:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:54:06,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:06,321 INFO L225 Difference]: With dead ends: 380 [2020-10-11 12:54:06,321 INFO L226 Difference]: Without dead ends: 375 [2020-10-11 12:54:06,321 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:54:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-11 12:54:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 256. [2020-10-11 12:54:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:54:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-11 12:54:06,325 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-11 12:54:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:06,325 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-11 12:54:06,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-11 12:54:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:06,326 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:06,326 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:06,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-10-11 12:54:06,528 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1000461131, now seen corresponding path program 230 times [2020-10-11 12:54:06,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:06,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977529878] [2020-10-11 12:54:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:06,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977529878] [2020-10-11 12:54:06,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53733184] [2020-10-11 12:54:06,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:06,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:06,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:06,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:06,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:06,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:07,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:07,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:07,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084987849] [2020-10-11 12:54:07,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:07,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:07,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:07,012 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-11 12:54:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:08,378 INFO L93 Difference]: Finished difference Result 352 states and 887 transitions. [2020-10-11 12:54:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-11 12:54:08,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:08,381 INFO L225 Difference]: With dead ends: 352 [2020-10-11 12:54:08,381 INFO L226 Difference]: Without dead ends: 342 [2020-10-11 12:54:08,381 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2020-10-11 12:54:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-11 12:54:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 253. [2020-10-11 12:54:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-11 12:54:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 667 transitions. [2020-10-11 12:54:08,386 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 667 transitions. Word has length 14 [2020-10-11 12:54:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:08,386 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 667 transitions. [2020-10-11 12:54:08,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 667 transitions. [2020-10-11 12:54:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:08,386 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:08,386 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:08,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2020-10-11 12:54:08,587 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:08,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1000462092, now seen corresponding path program 231 times [2020-10-11 12:54:08,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:08,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478887631] [2020-10-11 12:54:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:08,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478887631] [2020-10-11 12:54:08,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458372300] [2020-10-11 12:54:08,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:08,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:54:08,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:08,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:08,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:09,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:54:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:09,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:09,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:09,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916602806] [2020-10-11 12:54:09,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:09,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:09,201 INFO L87 Difference]: Start difference. First operand 253 states and 667 transitions. Second operand 17 states. [2020-10-11 12:54:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:10,914 INFO L93 Difference]: Finished difference Result 421 states and 1043 transitions. [2020-10-11 12:54:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:54:10,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:10,917 INFO L225 Difference]: With dead ends: 421 [2020-10-11 12:54:10,917 INFO L226 Difference]: Without dead ends: 410 [2020-10-11 12:54:10,918 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:54:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-11 12:54:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2020-10-11 12:54:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-11 12:54:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 653 transitions. [2020-10-11 12:54:10,921 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 653 transitions. Word has length 14 [2020-10-11 12:54:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:10,921 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 653 transitions. [2020-10-11 12:54:10,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 653 transitions. [2020-10-11 12:54:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:10,922 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:10,922 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:11,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-10-11 12:54:11,123 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:11,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1000469563, now seen corresponding path program 232 times [2020-10-11 12:54:11,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:11,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660409017] [2020-10-11 12:54:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:11,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660409017] [2020-10-11 12:54:11,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043316347] [2020-10-11 12:54:11,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:11,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:54:11,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:11,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:11,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:11,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:11,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787585383] [2020-10-11 12:54:11,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:11,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:11,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:11,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:11,639 INFO L87 Difference]: Start difference. First operand 249 states and 653 transitions. Second operand 17 states. [2020-10-11 12:54:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:12,908 INFO L93 Difference]: Finished difference Result 402 states and 976 transitions. [2020-10-11 12:54:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:54:12,910 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:12,911 INFO L225 Difference]: With dead ends: 402 [2020-10-11 12:54:12,912 INFO L226 Difference]: Without dead ends: 389 [2020-10-11 12:54:12,912 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=412, Invalid=994, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:54:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-11 12:54:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 251. [2020-10-11 12:54:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-11 12:54:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 658 transitions. [2020-10-11 12:54:12,916 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 658 transitions. Word has length 14 [2020-10-11 12:54:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:12,916 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 658 transitions. [2020-10-11 12:54:12,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 658 transitions. [2020-10-11 12:54:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:12,916 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:12,916 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:13,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:13,117 INFO L429 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1000490922, now seen corresponding path program 233 times [2020-10-11 12:54:13,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624906447] [2020-10-11 12:54:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:13,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624906447] [2020-10-11 12:54:13,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450568190] [2020-10-11 12:54:13,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:13,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:54:13,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:13,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:13,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:13,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:13,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:13,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:13,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854573716] [2020-10-11 12:54:13,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:13,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:13,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:13,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:13,620 INFO L87 Difference]: Start difference. First operand 251 states and 658 transitions. Second operand 17 states. [2020-10-11 12:54:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:15,430 INFO L93 Difference]: Finished difference Result 422 states and 1042 transitions. [2020-10-11 12:54:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:54:15,432 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:15,433 INFO L225 Difference]: With dead ends: 422 [2020-10-11 12:54:15,433 INFO L226 Difference]: Without dead ends: 411 [2020-10-11 12:54:15,434 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:54:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-11 12:54:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 249. [2020-10-11 12:54:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-11 12:54:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 648 transitions. [2020-10-11 12:54:15,438 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 648 transitions. Word has length 14 [2020-10-11 12:54:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:15,438 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 648 transitions. [2020-10-11 12:54:15,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 648 transitions. [2020-10-11 12:54:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:15,439 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:15,439 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:15,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:15,640 INFO L429 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1000491883, now seen corresponding path program 234 times [2020-10-11 12:54:15,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:15,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597964107] [2020-10-11 12:54:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:15,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597964107] [2020-10-11 12:54:15,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273881047] [2020-10-11 12:54:15,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:15,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:54:15,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:15,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:15,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:16,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:54:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:16,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:16,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:16,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666776072] [2020-10-11 12:54:16,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:16,222 INFO L87 Difference]: Start difference. First operand 249 states and 648 transitions. Second operand 17 states. [2020-10-11 12:54:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:17,820 INFO L93 Difference]: Finished difference Result 424 states and 1036 transitions. [2020-10-11 12:54:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:54:17,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:17,823 INFO L225 Difference]: With dead ends: 424 [2020-10-11 12:54:17,823 INFO L226 Difference]: Without dead ends: 396 [2020-10-11 12:54:17,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:54:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-11 12:54:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 238. [2020-10-11 12:54:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-11 12:54:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 612 transitions. [2020-10-11 12:54:17,827 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 612 transitions. Word has length 14 [2020-10-11 12:54:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:17,828 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 612 transitions. [2020-10-11 12:54:17,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-10-11 12:54:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:17,828 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:17,828 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:18,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:18,029 INFO L429 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1001384652, now seen corresponding path program 235 times [2020-10-11 12:54:18,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:18,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274075848] [2020-10-11 12:54:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:18,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274075848] [2020-10-11 12:54:18,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319020668] [2020-10-11 12:54:18,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:18,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:18,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:18,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:18,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:18,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998995827] [2020-10-11 12:54:18,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:18,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:18,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:18,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:18,524 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 17 states. [2020-10-11 12:54:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:20,418 INFO L93 Difference]: Finished difference Result 369 states and 896 transitions. [2020-10-11 12:54:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:54:20,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:20,421 INFO L225 Difference]: With dead ends: 369 [2020-10-11 12:54:20,421 INFO L226 Difference]: Without dead ends: 359 [2020-10-11 12:54:20,421 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:54:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-11 12:54:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 228. [2020-10-11 12:54:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-11 12:54:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 568 transitions. [2020-10-11 12:54:20,426 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 568 transitions. Word has length 14 [2020-10-11 12:54:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:20,426 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 568 transitions. [2020-10-11 12:54:20,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 568 transitions. [2020-10-11 12:54:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:20,427 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:20,427 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:20,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable263 [2020-10-11 12:54:20,637 INFO L429 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1866754364, now seen corresponding path program 236 times [2020-10-11 12:54:20,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:20,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330735489] [2020-10-11 12:54:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330735489] [2020-10-11 12:54:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625230063] [2020-10-11 12:54:20,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:20,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:20,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:20,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:21,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:21,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:21,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227412622] [2020-10-11 12:54:21,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:21,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:21,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:21,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:21,214 INFO L87 Difference]: Start difference. First operand 228 states and 568 transitions. Second operand 17 states. [2020-10-11 12:54:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:21,734 INFO L93 Difference]: Finished difference Result 304 states and 714 transitions. [2020-10-11 12:54:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:54:21,736 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:21,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:21,736 INFO L225 Difference]: With dead ends: 304 [2020-10-11 12:54:21,736 INFO L226 Difference]: Without dead ends: 291 [2020-10-11 12:54:21,736 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:54:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-11 12:54:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 226. [2020-10-11 12:54:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-11 12:54:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 564 transitions. [2020-10-11 12:54:21,741 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 564 transitions. Word has length 14 [2020-10-11 12:54:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:21,741 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 564 transitions. [2020-10-11 12:54:21,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 564 transitions. [2020-10-11 12:54:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:21,742 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:21,742 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:21,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:21,943 INFO L429 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:21,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1888203884, now seen corresponding path program 237 times [2020-10-11 12:54:21,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:21,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315641016] [2020-10-11 12:54:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:22,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315641016] [2020-10-11 12:54:22,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163283871] [2020-10-11 12:54:22,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:22,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:54:22,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:22,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:22,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:22,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:22,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:22,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615372660] [2020-10-11 12:54:22,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:22,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:22,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:22,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:22,498 INFO L87 Difference]: Start difference. First operand 226 states and 564 transitions. Second operand 17 states. [2020-10-11 12:54:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:23,056 INFO L93 Difference]: Finished difference Result 300 states and 708 transitions. [2020-10-11 12:54:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:54:23,058 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:23,059 INFO L225 Difference]: With dead ends: 300 [2020-10-11 12:54:23,059 INFO L226 Difference]: Without dead ends: 287 [2020-10-11 12:54:23,059 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:54:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-11 12:54:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 224. [2020-10-11 12:54:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-11 12:54:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 562 transitions. [2020-10-11 12:54:23,062 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 562 transitions. Word has length 14 [2020-10-11 12:54:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:23,062 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 562 transitions. [2020-10-11 12:54:23,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 562 transitions. [2020-10-11 12:54:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:23,063 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:23,063 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:23,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2020-10-11 12:54:23,263 INFO L429 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1888866974, now seen corresponding path program 238 times [2020-10-11 12:54:23,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:23,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126105139] [2020-10-11 12:54:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:23,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126105139] [2020-10-11 12:54:23,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772218115] [2020-10-11 12:54:23,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:23,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:54:23,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:23,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:23,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:23,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:23,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:23,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096301220] [2020-10-11 12:54:23,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:23,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:23,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:23,836 INFO L87 Difference]: Start difference. First operand 224 states and 562 transitions. Second operand 17 states. [2020-10-11 12:54:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:24,502 INFO L93 Difference]: Finished difference Result 294 states and 701 transitions. [2020-10-11 12:54:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:54:24,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:24,505 INFO L225 Difference]: With dead ends: 294 [2020-10-11 12:54:24,505 INFO L226 Difference]: Without dead ends: 281 [2020-10-11 12:54:24,505 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:54:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-11 12:54:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 224. [2020-10-11 12:54:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-11 12:54:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 560 transitions. [2020-10-11 12:54:24,516 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 560 transitions. Word has length 14 [2020-10-11 12:54:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:24,516 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 560 transitions. [2020-10-11 12:54:24,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 560 transitions. [2020-10-11 12:54:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:24,517 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:24,517 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:24,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:24,718 INFO L429 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1888889294, now seen corresponding path program 239 times [2020-10-11 12:54:24,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:24,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884641637] [2020-10-11 12:54:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:24,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884641637] [2020-10-11 12:54:24,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935714340] [2020-10-11 12:54:24,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:24,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:54:24,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:24,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:24,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:25,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:54:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:27,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:27,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:54:27,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122881658] [2020-10-11 12:54:27,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:54:27,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:54:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2020-10-11 12:54:27,041 INFO L87 Difference]: Start difference. First operand 224 states and 560 transitions. Second operand 18 states. [2020-10-11 12:54:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:30,275 INFO L93 Difference]: Finished difference Result 303 states and 720 transitions. [2020-10-11 12:54:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:54:30,277 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-11 12:54:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:30,278 INFO L225 Difference]: With dead ends: 303 [2020-10-11 12:54:30,278 INFO L226 Difference]: Without dead ends: 286 [2020-10-11 12:54:30,278 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=307, Invalid=622, Unknown=1, NotChecked=0, Total=930 [2020-10-11 12:54:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-11 12:54:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2020-10-11 12:54:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-11 12:54:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 554 transitions. [2020-10-11 12:54:30,282 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 554 transitions. Word has length 14 [2020-10-11 12:54:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:30,282 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 554 transitions. [2020-10-11 12:54:30,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:54:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 554 transitions. [2020-10-11 12:54:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:30,282 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:30,283 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:30,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2020-10-11 12:54:30,483 INFO L429 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1888918124, now seen corresponding path program 240 times [2020-10-11 12:54:30,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:30,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398322403] [2020-10-11 12:54:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:30,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398322403] [2020-10-11 12:54:30,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399509750] [2020-10-11 12:54:30,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:30,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:54:30,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:30,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:30,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:30,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:31,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:31,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:31,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871793171] [2020-10-11 12:54:31,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:31,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:31,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:31,025 INFO L87 Difference]: Start difference. First operand 222 states and 554 transitions. Second operand 17 states. [2020-10-11 12:54:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:31,811 INFO L93 Difference]: Finished difference Result 287 states and 679 transitions. [2020-10-11 12:54:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:54:31,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:31,814 INFO L225 Difference]: With dead ends: 287 [2020-10-11 12:54:31,814 INFO L226 Difference]: Without dead ends: 271 [2020-10-11 12:54:31,814 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:54:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-11 12:54:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2020-10-11 12:54:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-11 12:54:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 535 transitions. [2020-10-11 12:54:31,818 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 535 transitions. Word has length 14 [2020-10-11 12:54:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:31,819 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 535 transitions. [2020-10-11 12:54:31,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 535 transitions. [2020-10-11 12:54:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:54:31,819 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:31,819 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:32,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:32,020 INFO L429 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash 491278210, now seen corresponding path program 241 times [2020-10-11 12:54:32,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:32,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930711534] [2020-10-11 12:54:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:32,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930711534] [2020-10-11 12:54:32,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496020081] [2020-10-11 12:54:32,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:32,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:54:32,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:32,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:32,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:54:32,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340411529] [2020-10-11 12:54:32,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:54:32,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:32,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:54:32,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:54:32,728 INFO L87 Difference]: Start difference. First operand 216 states and 535 transitions. Second operand 19 states. [2020-10-11 12:54:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:33,167 INFO L93 Difference]: Finished difference Result 268 states and 633 transitions. [2020-10-11 12:54:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:54:33,169 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:54:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:33,169 INFO L225 Difference]: With dead ends: 268 [2020-10-11 12:54:33,170 INFO L226 Difference]: Without dead ends: 266 [2020-10-11 12:54:33,170 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:54:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-11 12:54:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-10-11 12:54:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-11 12:54:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 563 transitions. [2020-10-11 12:54:33,174 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 563 transitions. Word has length 15 [2020-10-11 12:54:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:33,174 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 563 transitions. [2020-10-11 12:54:33,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:54:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 563 transitions. [2020-10-11 12:54:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:54:33,174 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:33,174 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:33,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2020-10-11 12:54:33,375 INFO L429 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:33,375 INFO L82 PathProgramCache]: Analyzing trace with hash 491307040, now seen corresponding path program 242 times [2020-10-11 12:54:33,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:33,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144396725] [2020-10-11 12:54:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144396725] [2020-10-11 12:54:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136602560] [2020-10-11 12:54:33,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:33,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:33,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:33,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:54:33,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:34,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:34,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:54:34,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996211872] [2020-10-11 12:54:34,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:54:34,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:54:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:54:34,158 INFO L87 Difference]: Start difference. First operand 227 states and 563 transitions. Second operand 19 states. [2020-10-11 12:54:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:34,803 INFO L93 Difference]: Finished difference Result 295 states and 691 transitions. [2020-10-11 12:54:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:54:34,806 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:54:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:34,807 INFO L225 Difference]: With dead ends: 295 [2020-10-11 12:54:34,807 INFO L226 Difference]: Without dead ends: 292 [2020-10-11 12:54:34,807 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=221, Invalid=429, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:54:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-11 12:54:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 229. [2020-10-11 12:54:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-11 12:54:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 569 transitions. [2020-10-11 12:54:34,810 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 569 transitions. Word has length 15 [2020-10-11 12:54:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:34,810 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 569 transitions. [2020-10-11 12:54:34,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:54:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 569 transitions. [2020-10-11 12:54:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:54:34,811 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:34,811 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:35,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2020-10-11 12:54:35,012 INFO L429 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash 492200770, now seen corresponding path program 243 times [2020-10-11 12:54:35,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:35,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280389622] [2020-10-11 12:54:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:35,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280389622] [2020-10-11 12:54:35,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689917381] [2020-10-11 12:54:35,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:35,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:54:35,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:35,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:54:35,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:42,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:42,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 12:54:42,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363451826] [2020-10-11 12:54:42,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 12:54:42,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 12:54:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=253, Unknown=3, NotChecked=0, Total=380 [2020-10-11 12:54:42,241 INFO L87 Difference]: Start difference. First operand 229 states and 569 transitions. Second operand 20 states. [2020-10-11 12:54:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:52,664 INFO L93 Difference]: Finished difference Result 303 states and 705 transitions. [2020-10-11 12:54:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:54:52,667 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-10-11 12:54:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:52,667 INFO L225 Difference]: With dead ends: 303 [2020-10-11 12:54:52,668 INFO L226 Difference]: Without dead ends: 301 [2020-10-11 12:54:52,668 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=266, Invalid=487, Unknown=3, NotChecked=0, Total=756 [2020-10-11 12:54:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-11 12:54:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 231. [2020-10-11 12:54:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-11 12:54:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 575 transitions. [2020-10-11 12:54:52,672 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 575 transitions. Word has length 15 [2020-10-11 12:54:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:52,672 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 575 transitions. [2020-10-11 12:54:52,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 12:54:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 575 transitions. [2020-10-11 12:54:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:54:52,673 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:52,673 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:52,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:52,873 INFO L429 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash 492201731, now seen corresponding path program 244 times [2020-10-11 12:54:52,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:52,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818300886] [2020-10-11 12:54:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:53,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818300886] [2020-10-11 12:54:53,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984650157] [2020-10-11 12:54:53,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:53,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:54:53,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:54:53,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:57,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:57,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:54:57,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220278428] [2020-10-11 12:54:57,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:54:57,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:57,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:54:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=236, Unknown=1, NotChecked=0, Total=342 [2020-10-11 12:54:57,393 INFO L87 Difference]: Start difference. First operand 231 states and 575 transitions. Second operand 19 states. [2020-10-11 12:55:01,716 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-11 12:55:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:02,316 INFO L93 Difference]: Finished difference Result 320 states and 746 transitions. [2020-10-11 12:55:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:55:02,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:02,319 INFO L225 Difference]: With dead ends: 320 [2020-10-11 12:55:02,320 INFO L226 Difference]: Without dead ends: 316 [2020-10-11 12:55:02,320 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=231, Invalid=470, Unknown=1, NotChecked=0, Total=702 [2020-10-11 12:55:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-11 12:55:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 232. [2020-10-11 12:55:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-11 12:55:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-11 12:55:02,323 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-11 12:55:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:02,323 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-11 12:55:02,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-11 12:55:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:02,324 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:02,324 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:02,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,266 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:02,525 INFO L429 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:02,525 INFO L82 PathProgramCache]: Analyzing trace with hash 492230561, now seen corresponding path program 245 times [2020-10-11 12:55:02,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:02,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693491599] [2020-10-11 12:55:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:02,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693491599] [2020-10-11 12:55:02,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527327278] [2020-10-11 12:55:02,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:02,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:55:02,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:02,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:02,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:03,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:03,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:03,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409376607] [2020-10-11 12:55:03,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:03,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:03,354 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-11 12:55:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:04,139 INFO L93 Difference]: Finished difference Result 311 states and 727 transitions. [2020-10-11 12:55:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:55:04,141 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:04,142 INFO L225 Difference]: With dead ends: 311 [2020-10-11 12:55:04,142 INFO L226 Difference]: Without dead ends: 308 [2020-10-11 12:55:04,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=460, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:55:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-11 12:55:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 232. [2020-10-11 12:55:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-11 12:55:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-11 12:55:04,145 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-11 12:55:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:04,145 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-11 12:55:04,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-11 12:55:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:04,146 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:04,146 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:04,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:04,347 INFO L429 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash 519906400, now seen corresponding path program 246 times [2020-10-11 12:55:04,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:04,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053633776] [2020-10-11 12:55:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:04,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053633776] [2020-10-11 12:55:04,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212014781] [2020-10-11 12:55:04,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:04,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:55:04,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:04,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:05,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:05,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:05,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998957823] [2020-10-11 12:55:05,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:05,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:05,153 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-11 12:55:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:06,157 INFO L93 Difference]: Finished difference Result 299 states and 700 transitions. [2020-10-11 12:55:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:55:06,160 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:06,161 INFO L225 Difference]: With dead ends: 299 [2020-10-11 12:55:06,161 INFO L226 Difference]: Without dead ends: 297 [2020-10-11 12:55:06,161 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=275, Invalid=537, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:55:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-11 12:55:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 235. [2020-10-11 12:55:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-11 12:55:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-11 12:55:06,165 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-11 12:55:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:06,165 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-11 12:55:06,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-11 12:55:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:06,166 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:06,166 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:06,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:06,367 INFO L429 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash 519907361, now seen corresponding path program 247 times [2020-10-11 12:55:06,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:06,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301509174] [2020-10-11 12:55:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:06,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301509174] [2020-10-11 12:55:06,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552871016] [2020-10-11 12:55:06,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:06,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:06,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:09,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:09,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823079633] [2020-10-11 12:55:09,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:09,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:09,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2020-10-11 12:55:09,225 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-11 12:55:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:10,458 INFO L93 Difference]: Finished difference Result 325 states and 758 transitions. [2020-10-11 12:55:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:55:10,461 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:10,461 INFO L225 Difference]: With dead ends: 325 [2020-10-11 12:55:10,462 INFO L226 Difference]: Without dead ends: 321 [2020-10-11 12:55:10,462 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=248, Invalid=507, Unknown=1, NotChecked=0, Total=756 [2020-10-11 12:55:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-11 12:55:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 235. [2020-10-11 12:55:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-11 12:55:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-11 12:55:10,466 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-11 12:55:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:10,467 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-11 12:55:10,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-11 12:55:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:10,467 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:10,467 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:10,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable275 [2020-10-11 12:55:10,670 INFO L429 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:10,670 INFO L82 PathProgramCache]: Analyzing trace with hash 519936191, now seen corresponding path program 248 times [2020-10-11 12:55:10,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:10,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747128522] [2020-10-11 12:55:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:10,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747128522] [2020-10-11 12:55:10,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561845716] [2020-10-11 12:55:10,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:10,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:55:10,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:10,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:10,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:24,383 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-11 12:55:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:28,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:28,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:28,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976784151] [2020-10-11 12:55:28,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:28,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:28,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=234, Unknown=3, NotChecked=0, Total=342 [2020-10-11 12:55:28,597 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-11 12:55:32,954 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:55:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:45,370 INFO L93 Difference]: Finished difference Result 337 states and 786 transitions. [2020-10-11 12:55:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:55:45,372 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:45,373 INFO L225 Difference]: With dead ends: 337 [2020-10-11 12:55:45,373 INFO L226 Difference]: Without dead ends: 333 [2020-10-11 12:55:45,374 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=253, Invalid=498, Unknown=5, NotChecked=0, Total=756 [2020-10-11 12:55:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-11 12:55:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2020-10-11 12:55:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-11 12:55:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 590 transitions. [2020-10-11 12:55:45,378 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 590 transitions. Word has length 15 [2020-10-11 12:55:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:45,378 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 590 transitions. [2020-10-11 12:55:45,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 590 transitions. [2020-10-11 12:55:45,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:45,379 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:45,379 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:45,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:45,589 INFO L429 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash 520830882, now seen corresponding path program 249 times [2020-10-11 12:55:45,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:45,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021319108] [2020-10-11 12:55:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:45,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021319108] [2020-10-11 12:55:45,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303883616] [2020-10-11 12:55:45,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:45,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:55:45,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:45,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:45,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:47,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:47,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:47,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894346180] [2020-10-11 12:55:47,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:47,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:47,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:47,742 INFO L87 Difference]: Start difference. First operand 236 states and 590 transitions. Second operand 19 states. [2020-10-11 12:55:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:48,813 INFO L93 Difference]: Finished difference Result 335 states and 781 transitions. [2020-10-11 12:55:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:55:48,815 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:48,815 INFO L225 Difference]: With dead ends: 335 [2020-10-11 12:55:48,816 INFO L226 Difference]: Without dead ends: 319 [2020-10-11 12:55:48,816 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:55:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-11 12:55:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 236. [2020-10-11 12:55:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-11 12:55:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 583 transitions. [2020-10-11 12:55:48,819 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 583 transitions. Word has length 15 [2020-10-11 12:55:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:48,819 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 583 transitions. [2020-10-11 12:55:48,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 583 transitions. [2020-10-11 12:55:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:48,820 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:48,820 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:49,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 271 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2020-10-11 12:55:49,021 INFO L429 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1378780930, now seen corresponding path program 250 times [2020-10-11 12:55:49,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:49,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955206755] [2020-10-11 12:55:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:49,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955206755] [2020-10-11 12:55:49,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48814783] [2020-10-11 12:55:49,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:49,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:55:49,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:49,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:49,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:49,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:49,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:49,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042430261] [2020-10-11 12:55:49,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:49,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:49,752 INFO L87 Difference]: Start difference. First operand 236 states and 583 transitions. Second operand 19 states. [2020-10-11 12:55:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:50,695 INFO L93 Difference]: Finished difference Result 297 states and 694 transitions. [2020-10-11 12:55:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:55:50,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:50,699 INFO L225 Difference]: With dead ends: 297 [2020-10-11 12:55:50,699 INFO L226 Difference]: Without dead ends: 295 [2020-10-11 12:55:50,699 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=307, Invalid=623, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:55:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-11 12:55:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 240. [2020-10-11 12:55:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-11 12:55:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-11 12:55:50,703 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-11 12:55:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:50,703 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-11 12:55:50,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-11 12:55:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:50,703 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:50,703 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:50,904 INFO L429 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1378781891, now seen corresponding path program 251 times [2020-10-11 12:55:50,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:50,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554773868] [2020-10-11 12:55:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:51,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554773868] [2020-10-11 12:55:51,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637752698] [2020-10-11 12:55:51,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:51,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:55:51,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:51,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:51,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:51,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:51,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:51,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526052263] [2020-10-11 12:55:51,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:51,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:51,645 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 19 states. [2020-10-11 12:55:52,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:52,602 INFO L93 Difference]: Finished difference Result 321 states and 746 transitions. [2020-10-11 12:55:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:55:52,605 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:52,606 INFO L225 Difference]: With dead ends: 321 [2020-10-11 12:55:52,606 INFO L226 Difference]: Without dead ends: 318 [2020-10-11 12:55:52,606 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:55:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-11 12:55:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 239. [2020-10-11 12:55:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-11 12:55:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 591 transitions. [2020-10-11 12:55:52,610 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 591 transitions. Word has length 15 [2020-10-11 12:55:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:52,610 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 591 transitions. [2020-10-11 12:55:52,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 591 transitions. [2020-10-11 12:55:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:52,611 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:52,611 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:52,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-10-11 12:55:52,811 INFO L429 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:52,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1378810721, now seen corresponding path program 252 times [2020-10-11 12:55:52,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:52,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691246546] [2020-10-11 12:55:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691246546] [2020-10-11 12:55:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68095091] [2020-10-11 12:55:53,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:53,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:55:53,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:53,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:53,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:54,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:54,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:54,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828508510] [2020-10-11 12:55:54,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:54,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:54,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:54,336 INFO L87 Difference]: Start difference. First operand 239 states and 591 transitions. Second operand 19 states. [2020-10-11 12:55:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:55,335 INFO L93 Difference]: Finished difference Result 332 states and 772 transitions. [2020-10-11 12:55:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:55:55,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:55,338 INFO L225 Difference]: With dead ends: 332 [2020-10-11 12:55:55,338 INFO L226 Difference]: Without dead ends: 328 [2020-10-11 12:55:55,339 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:55:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-11 12:55:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 238. [2020-10-11 12:55:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-11 12:55:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 588 transitions. [2020-10-11 12:55:55,343 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 588 transitions. Word has length 15 [2020-10-11 12:55:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:55,343 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 588 transitions. [2020-10-11 12:55:55,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 588 transitions. [2020-10-11 12:55:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:55,343 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:55,343 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:55,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,274 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:55,544 INFO L429 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:55,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:55,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704451, now seen corresponding path program 253 times [2020-10-11 12:55:55,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:55,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239259866] [2020-10-11 12:55:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:55,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239259866] [2020-10-11 12:55:55,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513280942] [2020-10-11 12:55:55,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:55,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:56,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:56,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:56,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848521577] [2020-10-11 12:55:56,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:56,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:56,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:56,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:56,274 INFO L87 Difference]: Start difference. First operand 238 states and 588 transitions. Second operand 19 states. [2020-10-11 12:55:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:57,261 INFO L93 Difference]: Finished difference Result 341 states and 793 transitions. [2020-10-11 12:55:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:55:57,264 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:57,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:57,264 INFO L225 Difference]: With dead ends: 341 [2020-10-11 12:55:57,265 INFO L226 Difference]: Without dead ends: 337 [2020-10-11 12:55:57,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:55:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-11 12:55:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 243. [2020-10-11 12:55:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-11 12:55:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 601 transitions. [2020-10-11 12:55:57,273 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 601 transitions. Word has length 15 [2020-10-11 12:55:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:57,273 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 601 transitions. [2020-10-11 12:55:57,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 601 transitions. [2020-10-11 12:55:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:57,274 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:57,274 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:57,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,275 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:57,475 INFO L429 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:57,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1379705412, now seen corresponding path program 254 times [2020-10-11 12:55:57,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:57,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457183871] [2020-10-11 12:55:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457183871] [2020-10-11 12:55:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897901044] [2020-10-11 12:55:57,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:57,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:55:57,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:57,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:57,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:58,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:58,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:58,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26158467] [2020-10-11 12:55:58,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:58,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:58,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:58,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:58,190 INFO L87 Difference]: Start difference. First operand 243 states and 601 transitions. Second operand 19 states. [2020-10-11 12:55:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:59,043 INFO L93 Difference]: Finished difference Result 341 states and 794 transitions. [2020-10-11 12:55:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:55:59,046 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:55:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:59,046 INFO L225 Difference]: With dead ends: 341 [2020-10-11 12:55:59,047 INFO L226 Difference]: Without dead ends: 326 [2020-10-11 12:55:59,047 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:55:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-11 12:55:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-11 12:55:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-11 12:55:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 601 transitions. [2020-10-11 12:55:59,050 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 601 transitions. Word has length 15 [2020-10-11 12:55:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:59,050 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 601 transitions. [2020-10-11 12:55:59,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:55:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 601 transitions. [2020-10-11 12:55:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:55:59,051 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:59,051 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:59,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2020-10-11 12:55:59,251 INFO L429 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:59,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1379734242, now seen corresponding path program 255 times [2020-10-11 12:55:59,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:59,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674859915] [2020-10-11 12:55:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:59,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674859915] [2020-10-11 12:55:59,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086719255] [2020-10-11 12:55:59,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:59,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:55:59,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:55:59,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:59,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:59,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:55:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384480106] [2020-10-11 12:55:59,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:55:59,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:59,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:55:59,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:55:59,981 INFO L87 Difference]: Start difference. First operand 244 states and 601 transitions. Second operand 19 states. [2020-10-11 12:56:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:01,050 INFO L93 Difference]: Finished difference Result 339 states and 790 transitions. [2020-10-11 12:56:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:56:01,052 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:01,053 INFO L225 Difference]: With dead ends: 339 [2020-10-11 12:56:01,053 INFO L226 Difference]: Without dead ends: 328 [2020-10-11 12:56:01,053 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:56:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-11 12:56:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 242. [2020-10-11 12:56:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-11 12:56:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 596 transitions. [2020-10-11 12:56:01,057 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 596 transitions. Word has length 15 [2020-10-11 12:56:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:01,057 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 596 transitions. [2020-10-11 12:56:01,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 596 transitions. [2020-10-11 12:56:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:01,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:01,057 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:01,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:01,258 INFO L429 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:01,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411042, now seen corresponding path program 256 times [2020-10-11 12:56:01,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133769477] [2020-10-11 12:56:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:01,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133769477] [2020-10-11 12:56:01,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488231065] [2020-10-11 12:56:01,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:01,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:56:01,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:01,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:01,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:02,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:02,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:02,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640535743] [2020-10-11 12:56:02,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:02,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:02,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:02,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:02,117 INFO L87 Difference]: Start difference. First operand 242 states and 596 transitions. Second operand 19 states. [2020-10-11 12:56:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:03,520 INFO L93 Difference]: Finished difference Result 344 states and 797 transitions. [2020-10-11 12:56:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:56:03,522 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:03,523 INFO L225 Difference]: With dead ends: 344 [2020-10-11 12:56:03,523 INFO L226 Difference]: Without dead ends: 331 [2020-10-11 12:56:03,523 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=318, Invalid=674, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:56:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-11 12:56:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 242. [2020-10-11 12:56:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-11 12:56:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 594 transitions. [2020-10-11 12:56:03,526 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 594 transitions. Word has length 15 [2020-10-11 12:56:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:03,527 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 594 transitions. [2020-10-11 12:56:03,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 594 transitions. [2020-10-11 12:56:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:03,527 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:03,527 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:03,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,278 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:03,728 INFO L429 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1407439872, now seen corresponding path program 257 times [2020-10-11 12:56:03,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:03,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669971239] [2020-10-11 12:56:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669971239] [2020-10-11 12:56:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573013629] [2020-10-11 12:56:03,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:04,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:56:04,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:04,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:14,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:14,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:14,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729681669] [2020-10-11 12:56:14,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:14,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-11 12:56:14,135 INFO L87 Difference]: Start difference. First operand 242 states and 594 transitions. Second operand 19 states. [2020-10-11 12:56:18,614 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-11 12:56:22,962 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-11 12:56:25,499 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-11 12:56:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:25,861 INFO L93 Difference]: Finished difference Result 327 states and 762 transitions. [2020-10-11 12:56:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:56:25,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:25,864 INFO L225 Difference]: With dead ends: 327 [2020-10-11 12:56:25,864 INFO L226 Difference]: Without dead ends: 323 [2020-10-11 12:56:25,865 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-11 12:56:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-11 12:56:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 240. [2020-10-11 12:56:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-11 12:56:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 590 transitions. [2020-10-11 12:56:25,868 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 590 transitions. Word has length 15 [2020-10-11 12:56:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:25,868 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 590 transitions. [2020-10-11 12:56:25,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 590 transitions. [2020-10-11 12:56:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:25,869 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:25,869 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:26,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:26,070 INFO L429 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash -2060879712, now seen corresponding path program 258 times [2020-10-11 12:56:26,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:26,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706089097] [2020-10-11 12:56:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:26,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706089097] [2020-10-11 12:56:26,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523267719] [2020-10-11 12:56:26,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:26,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:56:26,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:26,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:26,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:26,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:26,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:26,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2504149] [2020-10-11 12:56:26,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:26,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:26,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:26,781 INFO L87 Difference]: Start difference. First operand 240 states and 590 transitions. Second operand 19 states. [2020-10-11 12:56:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:27,520 INFO L93 Difference]: Finished difference Result 291 states and 682 transitions. [2020-10-11 12:56:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:56:27,523 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:27,524 INFO L225 Difference]: With dead ends: 291 [2020-10-11 12:56:27,524 INFO L226 Difference]: Without dead ends: 289 [2020-10-11 12:56:27,524 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:56:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-11 12:56:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-10-11 12:56:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-11 12:56:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 605 transitions. [2020-10-11 12:56:27,528 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 605 transitions. Word has length 15 [2020-10-11 12:56:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:27,528 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 605 transitions. [2020-10-11 12:56:27,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 605 transitions. [2020-10-11 12:56:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:27,529 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:27,529 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:27,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:27,731 INFO L429 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2060878751, now seen corresponding path program 259 times [2020-10-11 12:56:27,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:27,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130902303] [2020-10-11 12:56:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:28,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130902303] [2020-10-11 12:56:28,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829190683] [2020-10-11 12:56:28,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:28,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:28,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:28,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630575029] [2020-10-11 12:56:28,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:28,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:28,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:28,519 INFO L87 Difference]: Start difference. First operand 246 states and 605 transitions. Second operand 19 states. [2020-10-11 12:56:29,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:29,346 INFO L93 Difference]: Finished difference Result 316 states and 735 transitions. [2020-10-11 12:56:29,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:56:29,349 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:29,349 INFO L225 Difference]: With dead ends: 316 [2020-10-11 12:56:29,350 INFO L226 Difference]: Without dead ends: 313 [2020-10-11 12:56:29,350 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:56:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-11 12:56:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 245. [2020-10-11 12:56:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-11 12:56:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 602 transitions. [2020-10-11 12:56:29,354 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 602 transitions. Word has length 15 [2020-10-11 12:56:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:29,354 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 602 transitions. [2020-10-11 12:56:29,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 602 transitions. [2020-10-11 12:56:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:29,355 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:29,355 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:29,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 281 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2020-10-11 12:56:29,556 INFO L429 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2060849921, now seen corresponding path program 260 times [2020-10-11 12:56:29,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730356912] [2020-10-11 12:56:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:29,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730356912] [2020-10-11 12:56:29,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880493848] [2020-10-11 12:56:29,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:29,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:56:29,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:29,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:29,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:32,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:32,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:32,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451266866] [2020-10-11 12:56:32,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:32,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:32,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:32,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:32,421 INFO L87 Difference]: Start difference. First operand 245 states and 602 transitions. Second operand 19 states. [2020-10-11 12:56:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:33,376 INFO L93 Difference]: Finished difference Result 330 states and 766 transitions. [2020-10-11 12:56:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:56:33,379 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:33,379 INFO L225 Difference]: With dead ends: 330 [2020-10-11 12:56:33,379 INFO L226 Difference]: Without dead ends: 326 [2020-10-11 12:56:33,379 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:56:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-11 12:56:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-11 12:56:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-11 12:56:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 599 transitions. [2020-10-11 12:56:33,382 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 599 transitions. Word has length 15 [2020-10-11 12:56:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:33,383 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 599 transitions. [2020-10-11 12:56:33,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 599 transitions. [2020-10-11 12:56:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:33,383 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:33,383 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:33,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 282 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2020-10-11 12:56:33,584 INFO L429 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2059956191, now seen corresponding path program 261 times [2020-10-11 12:56:33,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:33,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609946143] [2020-10-11 12:56:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:33,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609946143] [2020-10-11 12:56:33,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653951550] [2020-10-11 12:56:33,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:33,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:56:33,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:33,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:33,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:34,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:34,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:34,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221555391] [2020-10-11 12:56:34,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:34,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:34,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:34,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:34,425 INFO L87 Difference]: Start difference. First operand 244 states and 599 transitions. Second operand 19 states. [2020-10-11 12:56:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:35,606 INFO L93 Difference]: Finished difference Result 328 states and 761 transitions. [2020-10-11 12:56:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:56:35,609 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:35,610 INFO L225 Difference]: With dead ends: 328 [2020-10-11 12:56:35,610 INFO L226 Difference]: Without dead ends: 324 [2020-10-11 12:56:35,610 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:56:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-11 12:56:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 251. [2020-10-11 12:56:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-11 12:56:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 616 transitions. [2020-10-11 12:56:35,614 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 616 transitions. Word has length 15 [2020-10-11 12:56:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:35,614 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 616 transitions. [2020-10-11 12:56:35,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 616 transitions. [2020-10-11 12:56:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:35,614 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:35,614 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:35,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2020-10-11 12:56:35,815 INFO L429 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2059955230, now seen corresponding path program 262 times [2020-10-11 12:56:35,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:35,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323774994] [2020-10-11 12:56:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:36,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323774994] [2020-10-11 12:56:36,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870401214] [2020-10-11 12:56:36,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:36,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:56:36,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:36,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:36,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:43,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:43,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287356285] [2020-10-11 12:56:43,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:43,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:43,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:43,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-11 12:56:43,172 INFO L87 Difference]: Start difference. First operand 251 states and 616 transitions. Second operand 19 states. [2020-10-11 12:56:47,812 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-11 12:56:52,018 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-11 12:56:54,536 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-11 12:56:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:55,097 INFO L93 Difference]: Finished difference Result 348 states and 801 transitions. [2020-10-11 12:56:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:56:55,100 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:55,101 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:56:55,101 INFO L226 Difference]: Without dead ends: 332 [2020-10-11 12:56:55,101 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-11 12:56:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-11 12:56:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 254. [2020-10-11 12:56:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:56:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 619 transitions. [2020-10-11 12:56:55,106 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 619 transitions. Word has length 15 [2020-10-11 12:56:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:55,106 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 619 transitions. [2020-10-11 12:56:55,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 619 transitions. [2020-10-11 12:56:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:55,107 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:55,107 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:55,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,284 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:55,307 INFO L429 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2059926400, now seen corresponding path program 263 times [2020-10-11 12:56:55,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:55,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696892714] [2020-10-11 12:56:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:55,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696892714] [2020-10-11 12:56:55,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668863563] [2020-10-11 12:56:55,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:55,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 12:56:55,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:55,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:56,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:56,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609540997] [2020-10-11 12:56:56,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:56,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:56,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:56,261 INFO L87 Difference]: Start difference. First operand 254 states and 619 transitions. Second operand 19 states. [2020-10-11 12:56:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:57,762 INFO L93 Difference]: Finished difference Result 342 states and 787 transitions. [2020-10-11 12:56:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:56:57,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:57,765 INFO L225 Difference]: With dead ends: 342 [2020-10-11 12:56:57,765 INFO L226 Difference]: Without dead ends: 331 [2020-10-11 12:56:57,766 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:56:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-11 12:56:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 250. [2020-10-11 12:56:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-11 12:56:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 611 transitions. [2020-10-11 12:56:57,769 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 611 transitions. Word has length 15 [2020-10-11 12:56:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:57,770 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 611 transitions. [2020-10-11 12:56:57,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 611 transitions. [2020-10-11 12:56:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:57,770 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:57,770 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:57,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2020-10-11 12:56:57,971 INFO L429 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2032250561, now seen corresponding path program 264 times [2020-10-11 12:56:57,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:57,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092155804] [2020-10-11 12:56:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:56:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:58,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092155804] [2020-10-11 12:56:58,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355512224] [2020-10-11 12:56:58,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:56:58,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:56:58,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:56:58,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:56:58,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:56:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:56:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:56:58,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:56:58,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247570644] [2020-10-11 12:56:58,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:56:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:56:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:56:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:56:58,722 INFO L87 Difference]: Start difference. First operand 250 states and 611 transitions. Second operand 19 states. [2020-10-11 12:56:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:56:59,746 INFO L93 Difference]: Finished difference Result 326 states and 755 transitions. [2020-10-11 12:56:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:56:59,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:56:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:56:59,750 INFO L225 Difference]: With dead ends: 326 [2020-10-11 12:56:59,750 INFO L226 Difference]: Without dead ends: 322 [2020-10-11 12:56:59,751 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:56:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-11 12:56:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 255. [2020-10-11 12:56:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-11 12:56:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 623 transitions. [2020-10-11 12:56:59,755 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 623 transitions. Word has length 15 [2020-10-11 12:56:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:56:59,755 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 623 transitions. [2020-10-11 12:56:59,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:56:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 623 transitions. [2020-10-11 12:56:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:56:59,756 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:56:59,756 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:56:59,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2020-10-11 12:56:59,957 INFO L429 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:56:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:56:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2032220770, now seen corresponding path program 265 times [2020-10-11 12:56:59,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:56:59,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467326531] [2020-10-11 12:56:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:56:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467326531] [2020-10-11 12:57:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253881794] [2020-10-11 12:57:00,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:00,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:00,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:00,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:00,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:00,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976144788] [2020-10-11 12:57:00,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:00,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:00,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:00,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:00,706 INFO L87 Difference]: Start difference. First operand 255 states and 623 transitions. Second operand 19 states. [2020-10-11 12:57:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:01,604 INFO L93 Difference]: Finished difference Result 341 states and 782 transitions. [2020-10-11 12:57:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:57:01,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:01,608 INFO L225 Difference]: With dead ends: 341 [2020-10-11 12:57:01,608 INFO L226 Difference]: Without dead ends: 330 [2020-10-11 12:57:01,608 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:57:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-11 12:57:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 251. [2020-10-11 12:57:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-11 12:57:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 615 transitions. [2020-10-11 12:57:01,611 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 615 transitions. Word has length 15 [2020-10-11 12:57:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:01,612 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 615 transitions. [2020-10-11 12:57:01,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 615 transitions. [2020-10-11 12:57:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:01,612 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:01,612 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:01,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:01,813 INFO L429 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1173375070, now seen corresponding path program 266 times [2020-10-11 12:57:01,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:01,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675904449] [2020-10-11 12:57:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:02,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675904449] [2020-10-11 12:57:02,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474404356] [2020-10-11 12:57:02,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:02,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:57:02,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:02,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:02,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:02,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:02,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:02,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115775327] [2020-10-11 12:57:02,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:02,797 INFO L87 Difference]: Start difference. First operand 251 states and 615 transitions. Second operand 19 states. [2020-10-11 12:57:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:03,873 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2020-10-11 12:57:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:57:03,876 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:03,877 INFO L225 Difference]: With dead ends: 325 [2020-10-11 12:57:03,877 INFO L226 Difference]: Without dead ends: 313 [2020-10-11 12:57:03,877 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:57:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-11 12:57:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 249. [2020-10-11 12:57:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-11 12:57:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 610 transitions. [2020-10-11 12:57:03,881 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 610 transitions. Word has length 15 [2020-10-11 12:57:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:03,881 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 610 transitions. [2020-10-11 12:57:03,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 610 transitions. [2020-10-11 12:57:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:03,882 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:03,882 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:04,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:04,083 INFO L429 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1173345279, now seen corresponding path program 267 times [2020-10-11 12:57:04,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:04,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217622555] [2020-10-11 12:57:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:04,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217622555] [2020-10-11 12:57:04,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357592372] [2020-10-11 12:57:04,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:04,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:57:04,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:04,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:06,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:06,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:06,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869515375] [2020-10-11 12:57:06,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:06,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:06,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:06,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:06,655 INFO L87 Difference]: Start difference. First operand 249 states and 610 transitions. Second operand 19 states. [2020-10-11 12:57:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:08,143 INFO L93 Difference]: Finished difference Result 320 states and 735 transitions. [2020-10-11 12:57:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:57:08,146 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:08,147 INFO L225 Difference]: With dead ends: 320 [2020-10-11 12:57:08,147 INFO L226 Difference]: Without dead ends: 307 [2020-10-11 12:57:08,147 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:57:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-11 12:57:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 246. [2020-10-11 12:57:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-11 12:57:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 602 transitions. [2020-10-11 12:57:08,151 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 602 transitions. Word has length 15 [2020-10-11 12:57:08,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:08,151 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 602 transitions. [2020-10-11 12:57:08,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 602 transitions. [2020-10-11 12:57:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:08,152 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:08,152 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:08,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:08,355 INFO L429 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1143823359, now seen corresponding path program 268 times [2020-10-11 12:57:08,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:08,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73151161] [2020-10-11 12:57:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:08,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73151161] [2020-10-11 12:57:08,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549961159] [2020-10-11 12:57:08,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:08,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:57:08,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:08,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:08,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:09,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:09,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:09,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282169061] [2020-10-11 12:57:09,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:09,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:09,291 INFO L87 Difference]: Start difference. First operand 246 states and 602 transitions. Second operand 19 states. [2020-10-11 12:57:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:09,838 INFO L93 Difference]: Finished difference Result 300 states and 697 transitions. [2020-10-11 12:57:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:57:09,841 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:09,842 INFO L225 Difference]: With dead ends: 300 [2020-10-11 12:57:09,842 INFO L226 Difference]: Without dead ends: 289 [2020-10-11 12:57:09,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:57:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-11 12:57:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 248. [2020-10-11 12:57:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-11 12:57:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-11 12:57:09,847 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-11 12:57:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:09,847 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-11 12:57:09,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-11 12:57:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:09,847 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:09,847 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:10,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable296 [2020-10-11 12:57:10,048 INFO L429 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash 439566480, now seen corresponding path program 269 times [2020-10-11 12:57:10,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:10,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938861317] [2020-10-11 12:57:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938861317] [2020-10-11 12:57:10,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291127660] [2020-10-11 12:57:10,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:10,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:57:10,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:10,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:10,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:10,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:10,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:10,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440086620] [2020-10-11 12:57:10,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:10,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:10,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:10,980 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-11 12:57:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:11,593 INFO L93 Difference]: Finished difference Result 308 states and 716 transitions. [2020-10-11 12:57:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:57:11,595 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:11,596 INFO L225 Difference]: With dead ends: 308 [2020-10-11 12:57:11,596 INFO L226 Difference]: Without dead ends: 306 [2020-10-11 12:57:11,597 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:57:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-11 12:57:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 254. [2020-10-11 12:57:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:57:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-11 12:57:11,601 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-11 12:57:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:11,601 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-11 12:57:11,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-11 12:57:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:11,601 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:11,601 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:11,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:11,802 INFO L429 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:11,803 INFO L82 PathProgramCache]: Analyzing trace with hash 439595310, now seen corresponding path program 270 times [2020-10-11 12:57:11,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:11,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350006440] [2020-10-11 12:57:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:12,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350006440] [2020-10-11 12:57:12,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99660402] [2020-10-11 12:57:12,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:12,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:57:12,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:12,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:12,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:14,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:14,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:14,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827252785] [2020-10-11 12:57:14,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:14,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:14,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:14,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:14,349 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-11 12:57:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:15,250 INFO L93 Difference]: Finished difference Result 335 states and 780 transitions. [2020-10-11 12:57:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:15,253 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:15,254 INFO L225 Difference]: With dead ends: 335 [2020-10-11 12:57:15,255 INFO L226 Difference]: Without dead ends: 332 [2020-10-11 12:57:15,255 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:57:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-11 12:57:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 252. [2020-10-11 12:57:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-11 12:57:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 616 transitions. [2020-10-11 12:57:15,264 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 616 transitions. Word has length 15 [2020-10-11 12:57:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:15,264 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 616 transitions. [2020-10-11 12:57:15,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 616 transitions. [2020-10-11 12:57:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:15,265 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:15,265 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:15,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2020-10-11 12:57:15,466 INFO L429 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash 440489040, now seen corresponding path program 271 times [2020-10-11 12:57:15,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:15,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320843766] [2020-10-11 12:57:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320843766] [2020-10-11 12:57:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342793144] [2020-10-11 12:57:15,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:15,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:23,856 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 12:57:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:23,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:23,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 12:57:23,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520862330] [2020-10-11 12:57:23,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 12:57:23,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 12:57:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=271, Unknown=2, NotChecked=0, Total=380 [2020-10-11 12:57:23,860 INFO L87 Difference]: Start difference. First operand 252 states and 616 transitions. Second operand 20 states. [2020-10-11 12:57:24,579 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-10-11 12:57:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:31,634 INFO L93 Difference]: Finished difference Result 334 states and 770 transitions. [2020-10-11 12:57:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:57:31,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-10-11 12:57:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:31,638 INFO L225 Difference]: With dead ends: 334 [2020-10-11 12:57:31,638 INFO L226 Difference]: Without dead ends: 332 [2020-10-11 12:57:31,639 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=285, Invalid=583, Unknown=2, NotChecked=0, Total=870 [2020-10-11 12:57:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-11 12:57:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 254. [2020-10-11 12:57:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:57:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-11 12:57:31,642 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-11 12:57:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:31,649 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-11 12:57:31,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 12:57:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-11 12:57:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:31,650 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:31,650 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:31,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 293 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2020-10-11 12:57:31,851 INFO L429 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:31,851 INFO L82 PathProgramCache]: Analyzing trace with hash 440490001, now seen corresponding path program 272 times [2020-10-11 12:57:31,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:31,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092238557] [2020-10-11 12:57:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092238557] [2020-10-11 12:57:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948089728] [2020-10-11 12:57:32,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:32,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:57:32,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:32,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:36,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:36,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:36,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821219275] [2020-10-11 12:57:36,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:36,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:36,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=251, Unknown=1, NotChecked=0, Total=342 [2020-10-11 12:57:36,851 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-11 12:57:41,285 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-11 12:57:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:42,144 INFO L93 Difference]: Finished difference Result 362 states and 839 transitions. [2020-10-11 12:57:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:57:42,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:42,148 INFO L225 Difference]: With dead ends: 362 [2020-10-11 12:57:42,156 INFO L226 Difference]: Without dead ends: 358 [2020-10-11 12:57:42,156 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=256, Invalid=555, Unknown=1, NotChecked=0, Total=812 [2020-10-11 12:57:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-11 12:57:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 254. [2020-10-11 12:57:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:57:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-11 12:57:42,159 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-11 12:57:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:42,160 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-11 12:57:42,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-11 12:57:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:42,160 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:42,160 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:42,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-10-11 12:57:42,361 INFO L429 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash 440518831, now seen corresponding path program 273 times [2020-10-11 12:57:42,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:42,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885629607] [2020-10-11 12:57:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:42,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885629607] [2020-10-11 12:57:42,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435362940] [2020-10-11 12:57:42,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:42,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:57:42,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:42,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:43,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:43,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:43,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569019732] [2020-10-11 12:57:43,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:43,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:43,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:43,382 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-11 12:57:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:44,580 INFO L93 Difference]: Finished difference Result 348 states and 807 transitions. [2020-10-11 12:57:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:57:44,582 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:44,583 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:57:44,583 INFO L226 Difference]: Without dead ends: 345 [2020-10-11 12:57:44,584 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:57:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-11 12:57:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 250. [2020-10-11 12:57:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-11 12:57:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 610 transitions. [2020-10-11 12:57:44,588 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 610 transitions. Word has length 15 [2020-10-11 12:57:44,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:44,588 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 610 transitions. [2020-10-11 12:57:44,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 610 transitions. [2020-10-11 12:57:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:44,589 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:44,589 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:44,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 295 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-10-11 12:57:44,790 INFO L429 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash 468194670, now seen corresponding path program 274 times [2020-10-11 12:57:44,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:44,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128246441] [2020-10-11 12:57:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:45,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128246441] [2020-10-11 12:57:45,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699312550] [2020-10-11 12:57:45,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:45,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:57:45,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:45,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:45,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:45,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915549815] [2020-10-11 12:57:45,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:45,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:45,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:45,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:45,759 INFO L87 Difference]: Start difference. First operand 250 states and 610 transitions. Second operand 19 states. [2020-10-11 12:57:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:47,227 INFO L93 Difference]: Finished difference Result 322 states and 743 transitions. [2020-10-11 12:57:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:57:47,230 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:47,231 INFO L225 Difference]: With dead ends: 322 [2020-10-11 12:57:47,231 INFO L226 Difference]: Without dead ends: 320 [2020-10-11 12:57:47,231 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:57:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-11 12:57:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 253. [2020-10-11 12:57:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-11 12:57:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-11 12:57:47,235 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-11 12:57:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:47,235 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-11 12:57:47,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-11 12:57:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:47,236 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:47,236 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:47,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2020-10-11 12:57:47,437 INFO L429 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash 468195631, now seen corresponding path program 275 times [2020-10-11 12:57:47,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:47,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112290290] [2020-10-11 12:57:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:47,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112290290] [2020-10-11 12:57:47,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3129194] [2020-10-11 12:57:47,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:47,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:57:47,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:47,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:48,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:48,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:57:48,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249666376] [2020-10-11 12:57:48,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:57:48,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:57:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:57:48,393 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-11 12:57:49,378 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-11 12:57:49,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:49,854 INFO L93 Difference]: Finished difference Result 356 states and 822 transitions. [2020-10-11 12:57:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:57:49,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:57:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:49,858 INFO L225 Difference]: With dead ends: 356 [2020-10-11 12:57:49,858 INFO L226 Difference]: Without dead ends: 352 [2020-10-11 12:57:49,858 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:57:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-11 12:57:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 253. [2020-10-11 12:57:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-11 12:57:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-11 12:57:49,862 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-11 12:57:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:49,862 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-11 12:57:49,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:57:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-11 12:57:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:57:49,863 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:49,863 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:50,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable303 [2020-10-11 12:57:50,063 INFO L429 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash 468224461, now seen corresponding path program 276 times [2020-10-11 12:57:50,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:50,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240773399] [2020-10-11 12:57:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:50,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240773399] [2020-10-11 12:57:50,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74638424] [2020-10-11 12:57:50,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:50,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:57:50,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:50,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:57:50,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:03,072 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-11 12:58:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:10,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:10,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:10,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865271895] [2020-10-11 12:58:10,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:10,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:10,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:10,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=249, Unknown=4, NotChecked=0, Total=342 [2020-10-11 12:58:10,614 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-11 12:58:15,061 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:58:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:20,930 INFO L93 Difference]: Finished difference Result 372 states and 857 transitions. [2020-10-11 12:58:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:58:20,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:20,934 INFO L225 Difference]: With dead ends: 372 [2020-10-11 12:58:20,935 INFO L226 Difference]: Without dead ends: 368 [2020-10-11 12:58:20,935 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=278, Invalid=588, Unknown=4, NotChecked=0, Total=870 [2020-10-11 12:58:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-11 12:58:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 254. [2020-10-11 12:58:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 12:58:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-11 12:58:20,939 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-11 12:58:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:20,939 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-11 12:58:20,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-11 12:58:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:20,940 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:20,940 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:21,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2020-10-11 12:58:21,141 INFO L429 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash 469119152, now seen corresponding path program 277 times [2020-10-11 12:58:21,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:21,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799042281] [2020-10-11 12:58:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:21,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799042281] [2020-10-11 12:58:21,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373173349] [2020-10-11 12:58:21,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:24,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:24,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:24,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209666916] [2020-10-11 12:58:24,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:24,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:24,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:24,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:24,166 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-11 12:58:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:25,827 INFO L93 Difference]: Finished difference Result 370 states and 850 transitions. [2020-10-11 12:58:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:58:25,830 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:25,831 INFO L225 Difference]: With dead ends: 370 [2020-10-11 12:58:25,831 INFO L226 Difference]: Without dead ends: 354 [2020-10-11 12:58:25,832 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:58:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-11 12:58:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-10-11 12:58:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-11 12:58:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-11 12:58:25,835 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-11 12:58:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:25,836 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-11 12:58:25,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-11 12:58:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:25,836 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:25,836 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:26,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:26,037 INFO L429 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:26,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1327069200, now seen corresponding path program 278 times [2020-10-11 12:58:26,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:26,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811615979] [2020-10-11 12:58:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:26,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811615979] [2020-10-11 12:58:26,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567055309] [2020-10-11 12:58:26,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:26,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:58:26,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:26,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:26,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:26,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:26,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:26,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793347716] [2020-10-11 12:58:26,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:26,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:26,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:26,886 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-11 12:58:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:28,291 INFO L93 Difference]: Finished difference Result 311 states and 720 transitions. [2020-10-11 12:58:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:58:28,294 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:28,295 INFO L225 Difference]: With dead ends: 311 [2020-10-11 12:58:28,295 INFO L226 Difference]: Without dead ends: 309 [2020-10-11 12:58:28,296 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=361, Invalid=829, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 12:58:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-11 12:58:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 252. [2020-10-11 12:58:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-11 12:58:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 615 transitions. [2020-10-11 12:58:28,301 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 615 transitions. Word has length 15 [2020-10-11 12:58:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:28,301 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 615 transitions. [2020-10-11 12:58:28,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 615 transitions. [2020-10-11 12:58:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:28,302 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:28,302 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:28,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable306 [2020-10-11 12:58:28,514 INFO L429 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:28,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1327070161, now seen corresponding path program 279 times [2020-10-11 12:58:28,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:28,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590425804] [2020-10-11 12:58:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:28,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590425804] [2020-10-11 12:58:28,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971180566] [2020-10-11 12:58:28,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:28,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:58:28,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:28,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:29,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:29,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:29,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949441457] [2020-10-11 12:58:29,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:29,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:29,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:29,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:29,368 INFO L87 Difference]: Start difference. First operand 252 states and 615 transitions. Second operand 19 states. [2020-10-11 12:58:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:30,780 INFO L93 Difference]: Finished difference Result 338 states and 777 transitions. [2020-10-11 12:58:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:58:30,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:30,790 INFO L225 Difference]: With dead ends: 338 [2020-10-11 12:58:30,790 INFO L226 Difference]: Without dead ends: 335 [2020-10-11 12:58:30,790 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:58:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-11 12:58:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 251. [2020-10-11 12:58:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-11 12:58:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 612 transitions. [2020-10-11 12:58:30,794 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 612 transitions. Word has length 15 [2020-10-11 12:58:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:30,795 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 612 transitions. [2020-10-11 12:58:30,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 612 transitions. [2020-10-11 12:58:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:30,795 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:30,795 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:30,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:30,996 INFO L429 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1327098991, now seen corresponding path program 280 times [2020-10-11 12:58:30,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:30,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672869951] [2020-10-11 12:58:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:31,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672869951] [2020-10-11 12:58:31,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533016225] [2020-10-11 12:58:31,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:31,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:58:31,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:31,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:31,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:34,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:34,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:34,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370488602] [2020-10-11 12:58:34,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:34,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:34,085 INFO L87 Difference]: Start difference. First operand 251 states and 612 transitions. Second operand 19 states. [2020-10-11 12:58:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:35,510 INFO L93 Difference]: Finished difference Result 345 states and 795 transitions. [2020-10-11 12:58:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:58:35,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:35,515 INFO L225 Difference]: With dead ends: 345 [2020-10-11 12:58:35,515 INFO L226 Difference]: Without dead ends: 341 [2020-10-11 12:58:35,515 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:58:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-11 12:58:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 250. [2020-10-11 12:58:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-11 12:58:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 609 transitions. [2020-10-11 12:58:35,521 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 609 transitions. Word has length 15 [2020-10-11 12:58:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:35,521 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 609 transitions. [2020-10-11 12:58:35,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 609 transitions. [2020-10-11 12:58:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:35,522 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:35,522 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:35,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:35,726 INFO L429 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:35,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1327992721, now seen corresponding path program 281 times [2020-10-11 12:58:35,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:35,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501727093] [2020-10-11 12:58:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:36,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501727093] [2020-10-11 12:58:36,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389393233] [2020-10-11 12:58:36,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:36,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:58:36,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:36,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:36,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:36,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:36,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533870016] [2020-10-11 12:58:36,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:36,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:36,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:36,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:36,538 INFO L87 Difference]: Start difference. First operand 250 states and 609 transitions. Second operand 19 states. [2020-10-11 12:58:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:37,882 INFO L93 Difference]: Finished difference Result 354 states and 811 transitions. [2020-10-11 12:58:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:58:37,885 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:37,886 INFO L225 Difference]: With dead ends: 354 [2020-10-11 12:58:37,887 INFO L226 Difference]: Without dead ends: 350 [2020-10-11 12:58:37,887 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=347, Invalid=775, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:58:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-11 12:58:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 255. [2020-10-11 12:58:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-11 12:58:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 622 transitions. [2020-10-11 12:58:37,892 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 622 transitions. Word has length 15 [2020-10-11 12:58:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:37,892 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 622 transitions. [2020-10-11 12:58:37,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 622 transitions. [2020-10-11 12:58:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:37,893 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:37,893 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:38,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:38,103 INFO L429 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1327993682, now seen corresponding path program 282 times [2020-10-11 12:58:38,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:38,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226334601] [2020-10-11 12:58:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:38,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226334601] [2020-10-11 12:58:38,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878194820] [2020-10-11 12:58:38,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:38,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:58:38,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:38,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:38,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:38,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:38,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:38,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615786385] [2020-10-11 12:58:38,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:38,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:38,927 INFO L87 Difference]: Start difference. First operand 255 states and 622 transitions. Second operand 19 states. [2020-10-11 12:58:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:40,053 INFO L93 Difference]: Finished difference Result 356 states and 815 transitions. [2020-10-11 12:58:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:58:40,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:40,057 INFO L225 Difference]: With dead ends: 356 [2020-10-11 12:58:40,058 INFO L226 Difference]: Without dead ends: 341 [2020-10-11 12:58:40,058 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=283, Invalid=647, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:58:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-11 12:58:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 256. [2020-10-11 12:58:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-11 12:58:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 622 transitions. [2020-10-11 12:58:40,062 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 622 transitions. Word has length 15 [2020-10-11 12:58:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:40,062 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 622 transitions. [2020-10-11 12:58:40,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 622 transitions. [2020-10-11 12:58:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:40,067 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:40,067 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:40,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2020-10-11 12:58:40,268 INFO L429 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1328022512, now seen corresponding path program 283 times [2020-10-11 12:58:40,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:40,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61353127] [2020-10-11 12:58:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:40,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61353127] [2020-10-11 12:58:40,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539937575] [2020-10-11 12:58:40,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:40,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:40,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:41,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:41,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:41,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340224185] [2020-10-11 12:58:41,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:41,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:41,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:41,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:41,135 INFO L87 Difference]: Start difference. First operand 256 states and 622 transitions. Second operand 19 states. [2020-10-11 12:58:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:42,656 INFO L93 Difference]: Finished difference Result 348 states and 796 transitions. [2020-10-11 12:58:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 12:58:42,659 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:42,660 INFO L225 Difference]: With dead ends: 348 [2020-10-11 12:58:42,660 INFO L226 Difference]: Without dead ends: 337 [2020-10-11 12:58:42,660 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=366, Invalid=824, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 12:58:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-11 12:58:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 252. [2020-10-11 12:58:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-11 12:58:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 614 transitions. [2020-10-11 12:58:42,663 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 614 transitions. Word has length 15 [2020-10-11 12:58:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:42,663 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 614 transitions. [2020-10-11 12:58:42,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 614 transitions. [2020-10-11 12:58:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:42,664 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:42,664 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:42,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2020-10-11 12:58:42,865 INFO L429 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1355699312, now seen corresponding path program 284 times [2020-10-11 12:58:42,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:42,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811385523] [2020-10-11 12:58:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:43,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811385523] [2020-10-11 12:58:43,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223701429] [2020-10-11 12:58:43,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:43,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:58:43,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:43,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:43,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:43,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:43,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133644684] [2020-10-11 12:58:43,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:43,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:58:43,861 INFO L87 Difference]: Start difference. First operand 252 states and 614 transitions. Second operand 19 states. [2020-10-11 12:58:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:45,924 INFO L93 Difference]: Finished difference Result 344 states and 788 transitions. [2020-10-11 12:58:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:58:45,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-11 12:58:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:45,929 INFO L225 Difference]: With dead ends: 344 [2020-10-11 12:58:45,929 INFO L226 Difference]: Without dead ends: 331 [2020-10-11 12:58:45,929 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=378, Invalid=882, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:58:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-11 12:58:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 252. [2020-10-11 12:58:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-11 12:58:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 612 transitions. [2020-10-11 12:58:45,933 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 612 transitions. Word has length 15 [2020-10-11 12:58:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:45,934 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 612 transitions. [2020-10-11 12:58:45,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 12:58:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 612 transitions. [2020-10-11 12:58:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 12:58:45,934 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:45,934 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:46,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2020-10-11 12:58:46,135 INFO L429 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1355728142, now seen corresponding path program 285 times [2020-10-11 12:58:46,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:46,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781622762] [2020-10-11 12:58:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:46,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781622762] [2020-10-11 12:58:46,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713686139] [2020-10-11 12:58:46,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:46,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:58:46,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:46,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 12:58:46,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:51,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:51,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-11 12:58:51,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040041944] [2020-10-11 12:58:51,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 12:58:51,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:51,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 12:58:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=260, Unknown=2, NotChecked=0, Total=342 [2020-10-11 12:58:51,407 INFO L87 Difference]: Start difference. First operand 252 states and 612 transitions. Second operand 19 states. [2020-10-11 12:58:56,008 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 Received shutdown request... [2020-10-11 12:58:58,147 WARN L210 SmtUtils]: Removed 4 from assertion stack [2020-10-11 12:58:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:58:58,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2020-10-11 12:58:58,349 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 12:58:58,353 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 12:58:58,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:58:58 BasicIcfg [2020-10-11 12:58:58,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 12:58:58,355 INFO L168 Benchmark]: Toolchain (without parser) took 877729.88 ms. Allocated memory was 252.2 MB in the beginning and 226.5 MB in the end (delta: -25.7 MB). Free memory was 208.2 MB in the beginning and 164.1 MB in the end (delta: 44.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:58,355 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 12:58:58,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.73 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 208.2 MB in the beginning and 268.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:58,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 314.6 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:58,356 INFO L168 Benchmark]: Boogie Preprocessor took 28.52 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 262.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:58,356 INFO L168 Benchmark]: RCFGBuilder took 374.40 ms. Allocated memory is still 314.6 MB. Free memory was 262.9 MB in the beginning and 243.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:58,356 INFO L168 Benchmark]: TraceAbstraction took 876573.30 ms. Allocated memory was 314.6 MB in the beginning and 226.5 MB in the end (delta: -88.1 MB). Free memory was 243.6 MB in the beginning and 164.1 MB in the end (delta: 79.5 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 12:58:58,358 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 691.73 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 208.2 MB in the beginning and 268.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 314.6 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.52 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 262.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 374.40 ms. Allocated memory is still 314.6 MB. Free memory was 262.9 MB in the beginning and 243.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 876573.30 ms. Allocated memory was 314.6 MB in the beginning and 226.5 MB in the end (delta: -88.1 MB). Free memory was 243.6 MB in the beginning and 164.1 MB in the end (delta: 79.5 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 697 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 943 MoverChecksTotal - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (252states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 45 for 2042ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 876.4s, OverallIterations: 314, TraceHistogramMax: 6, AutomataDifference: 534.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 4271 SDtfs, 33171 SDslu, 32140 SDs, 0 SdLazy, 23445 SolverSat, 10159 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 161.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9345 GetRequests, 1541 SyntacticMatches, 282 SemanticMatches, 7521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52294 ImplicationChecksByTransitivity, 600.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 313 MinimizatonAttempts, 20905 StatesRemovedByMinimization, 312 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 260.3s InterpolantComputationTime, 8242 NumberOfCodeBlocks, 8240 NumberOfCodeBlocksAsserted, 994 NumberOfCheckSat, 7622 ConstructedInterpolants, 57 QuantifiedInterpolants, 890659 SizeOfPredicates, 304 NumberOfNonLiveVariables, 27746 ConjunctsInSsa, 3195 ConjunctsInUnsatCore, 620 InterpolantComputations, 10 PerfectInterpolantSequences, 30/3748 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown