/usr/bin/java -Xmx8000000000 -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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:25:59,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:25:59,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:25:59,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:25:59,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:25:59,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:25:59,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:25:59,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:25:59,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:25:59,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:25:59,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:25:59,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:25:59,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:25:59,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:25:59,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:25:59,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:25:59,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:25:59,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:25:59,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:25:59,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:25:59,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:25:59,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:25:59,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:25:59,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:25:59,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:25:59,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:25:59,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:25:59,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:25:59,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:25:59,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:25:59,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:25:59,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:25:59,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:25:59,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:25:59,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:25:59,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:25:59,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:25:59,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:25:59,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:25:59,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:25:59,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:25:59,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:25:59,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:25:59,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:25:59,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:25:59,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:25:59,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:25:59,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:25:59,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:25:59,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:25:59,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:25:59,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:25:59,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:25:59,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:25:59,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:25:59,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:25:59,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:25:59,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:25:59,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:25:59,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:25:59,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:25:59,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:25:59,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:25:59,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:25:59,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:25:59,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:25:59,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:25:59,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:25:59,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:25:59,224 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:25:59,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:25:59,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:25:59,225 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:25:59,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:25:59,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:25:59,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:25:59,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:25:59,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:25:59,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-16 12:25:59,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415e08401/1e42f03f54bc480a8fed036512abf9d4/FLAGb4787da8d [2020-10-16 12:26:00,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:26:00,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-16 12:26:00,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415e08401/1e42f03f54bc480a8fed036512abf9d4/FLAGb4787da8d [2020-10-16 12:26:00,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415e08401/1e42f03f54bc480a8fed036512abf9d4 [2020-10-16 12:26:00,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:26:00,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:26:00,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:00,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:26:00,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:26:00,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730c0505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:00, skipping insertion in model container [2020-10-16 12:26:00,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:26:00,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:26:01,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,098 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:26:01,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,241 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:26:01,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01 WrapperNode [2020-10-16 12:26:01,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:01,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:26:01,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:26:01,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:26:01,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:26:01,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:26:01,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:26:01,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:26:01,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 12:26:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 12:26:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 12:26:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 12:26:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:26:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:26:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:26:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:26:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:26:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:26:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:26:01,401 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:26:01,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:26:01,696 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:26:01,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01 BoogieIcfgContainer [2020-10-16 12:26:01,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:26:01,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:26:01,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:26:01,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:26:01,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:26:00" (1/3) ... [2020-10-16 12:26:01,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2040f69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (2/3) ... [2020-10-16 12:26:01,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2040f69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01" (3/3) ... [2020-10-16 12:26:01,714 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-16 12:26:01,734 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:26:01,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:26:01,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:26:01,743 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:26:01,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,781 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,782 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,782 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,783 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,783 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,788 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,793 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,794 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,794 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,794 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,794 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,795 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,801 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,801 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,802 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,802 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,802 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,802 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,805 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:26:01,822 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:26:01,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:26:01,846 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:26:01,847 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:26:01,847 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:26:01,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:26:01,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:26:01,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:26:01,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:26:01,869 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:26:01,870 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,873 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,940 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 12:26:01,941 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:26:01,947 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. [2020-10-16 12:26:01,950 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-16 12:26:03,021 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 12:26:03,103 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-16 12:26:03,103 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 12:26:03,112 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-16 12:26:03,125 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:26:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:26:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:26:03,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-16 12:26:03,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293289588] [2020-10-16 12:26:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293289588] [2020-10-16 12:26:03,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:26:03,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [547255865] [2020-10-16 12:26:03,404 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,407 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,422 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:26:03,422 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,428 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:26:03,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:26:03,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:26:03,448 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-16 12:26:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,512 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-16 12:26:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:26:03,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-16 12:26:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,527 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:03,527 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:26:03,529 INFO L677 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 [2020-10-16 12:26:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:26:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-16 12:26:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:26:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-16 12:26:03,578 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-16 12:26:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,579 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-16 12:26:03,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:26:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-16 12:26:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:26:03,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-16 12:26:03,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188074643] [2020-10-16 12:26:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188074643] [2020-10-16 12:26:03,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1853271277] [2020-10-16 12:26:03,719 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,719 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,722 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-16 12:26:03,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,739 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:26:03,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:26:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:26:03,742 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-16 12:26:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,793 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-16 12:26:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:03,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 12:26:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,795 INFO L225 Difference]: With dead ends: 80 [2020-10-16 12:26:03,796 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:26:03,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:26:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-16 12:26:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:26:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-16 12:26:03,807 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-16 12:26:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,808 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-16 12:26:03,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:26:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-16 12:26:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:26:03,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-16 12:26:03,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608419405] [2020-10-16 12:26:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608419405] [2020-10-16 12:26:03,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1225235025] [2020-10-16 12:26:03,891 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,892 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,894 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-16 12:26:03,894 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,905 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:03,905 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:03,921 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [543#(and (< ~i~0 144) (<= ~j~0 2))] [2020-10-16 12:26:03,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:03,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:03,922 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-16 12:26:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,967 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-16 12:26:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:03,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-16 12:26:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,969 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:03,969 INFO L226 Difference]: Without dead ends: 77 [2020-10-16 12:26:03,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-16 12:26:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-16 12:26:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:26:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-16 12:26:03,980 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-16 12:26:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,980 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-16 12:26:03,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-16 12:26:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:03,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,981 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:26:03,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-16 12:26:03,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653295699] [2020-10-16 12:26:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653295699] [2020-10-16 12:26:04,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870924871] [2020-10-16 12:26:04,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:04,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:04,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:04,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:04,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:04,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:04,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-16 12:26:04,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1690306890] [2020-10-16 12:26:04,221 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,222 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,224 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-16 12:26:04,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,244 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:04,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:04,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:04,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:26:04,245 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-16 12:26:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,314 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-16 12:26:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:04,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-16 12:26:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,317 INFO L225 Difference]: With dead ends: 101 [2020-10-16 12:26:04,317 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:26:04,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:26:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-16 12:26:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:26:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-16 12:26:04,326 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-16 12:26:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,327 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-16 12:26:04,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-16 12:26:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,328 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:04,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 2 times [2020-10-16 12:26:04,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-16 12:26:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-16 12:26:04,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017516841] [2020-10-16 12:26:04,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:04,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:04,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:04,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:04,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 12:26:04,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1302530850] [2020-10-16 12:26:04,802 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,803 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,804 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 12:26:04,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,809 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:04,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:04,836 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:04,836 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:04,863 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1077#(and (< ~i~0 144) (<= ~j~0 3)), 1078#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:04,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:04,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:04,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:04,865 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-16 12:26:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,953 INFO L93 Difference]: Finished difference Result 104 states and 245 transitions. [2020-10-16 12:26:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:04,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-16 12:26:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,955 INFO L225 Difference]: With dead ends: 104 [2020-10-16 12:26:04,955 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 12:26:04,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 12:26:04,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-10-16 12:26:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:26:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-16 12:26:04,966 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 9 [2020-10-16 12:26:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,966 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-16 12:26:04,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-16 12:26:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:04,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:05,172 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-16 12:26:05,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494122587] [2020-10-16 12:26:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494122587] [2020-10-16 12:26:05,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:05,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:26:05,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [422062844] [2020-10-16 12:26:05,251 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,252 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,254 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions. [2020-10-16 12:26:05,254 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,267 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:05,268 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,295 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:05,295 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,304 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:05,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:05,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,305 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-10-16 12:26:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,349 INFO L93 Difference]: Finished difference Result 93 states and 221 transitions. [2020-10-16 12:26:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:26:05,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 12:26:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,352 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:26:05,353 INFO L226 Difference]: Without dead ends: 91 [2020-10-16 12:26:05,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-16 12:26:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-16 12:26:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:26:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-16 12:26:05,374 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-16 12:26:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,374 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-16 12:26:05,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-16 12:26:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:26:05,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-16 12:26:05,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 12:26:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 12:26:05,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:05,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:26:05,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [537005897] [2020-10-16 12:26:05,539 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,540 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:05,542 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,556 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:05,556 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,566 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:05,566 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,579 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1606#(and (< ~i~0 144) (<= ~j~0 3))] [2020-10-16 12:26:05,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:05,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:05,581 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-16 12:26:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,649 INFO L93 Difference]: Finished difference Result 112 states and 262 transitions. [2020-10-16 12:26:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:05,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:26:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,651 INFO L225 Difference]: With dead ends: 112 [2020-10-16 12:26:05,652 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:26:05,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:26:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:26:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-16 12:26:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:26:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-16 12:26:05,660 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-16 12:26:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,661 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-16 12:26:05,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-16 12:26:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,662 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:26:05,662 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-16 12:26:05,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975041006] [2020-10-16 12:26:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975041006] [2020-10-16 12:26:05,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494118656] [2020-10-16 12:26:05,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:05,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:05,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:05,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:05,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:05,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:05,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:26:05,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296888596] [2020-10-16 12:26:05,894 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,895 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,897 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:05,897 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,922 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:05,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:05,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:05,923 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-16 12:26:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:06,023 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-16 12:26:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:06,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:26:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:06,026 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:06,026 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:26:06,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:26:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-16 12:26:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:26:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-16 12:26:06,043 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-16 12:26:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:06,043 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-16 12:26:06,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-16 12:26:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:06,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:06,047 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:06,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,248 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 3 times [2020-10-16 12:26:06,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:06,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571849251] [2020-10-16 12:26:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571849251] [2020-10-16 12:26:06,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996224080] [2020-10-16 12:26:06,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:06,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:06,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:06,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:06,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:06,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [568646467] [2020-10-16 12:26:06,540 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:06,540 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:06,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-16 12:26:06,542 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:06,545 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:06,545 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,582 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,620 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,620 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,649 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2272#(and (= ~i~0 1) (<= (+ (* 2 ~i~0) ~j~0) 4)), 2270#(and (<= ~j~0 4) (< ~i~0 144)), 2271#(and (= ~i~0 1) (<= (+ ~i~0 ~j~0) 4))] [2020-10-16 12:26:06,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:06,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:06,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:06,650 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-16 12:26:06,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:06,733 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-10-16 12:26:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:06,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-16 12:26:06,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:06,735 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:06,736 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:06,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-16 12:26:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:26:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-16 12:26:06,743 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-16 12:26:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:06,744 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-16 12:26:06,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-16 12:26:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:06,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:06,745 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:06,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,959 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:06,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 3 times [2020-10-16 12:26:06,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:06,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742661846] [2020-10-16 12:26:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742661846] [2020-10-16 12:26:07,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852374651] [2020-10-16 12:26:07,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:07,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:07,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:07,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:07,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:07,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:07,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1213438863] [2020-10-16 12:26:07,247 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:07,249 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:07,254 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 12:26:07,255 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:07,278 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,322 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,329 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:07,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:07,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,330 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-16 12:26:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:07,365 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-16 12:26:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:07,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:07,367 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:26:07,367 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:26:07,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:26:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-16 12:26:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:26:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-16 12:26:07,379 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-16 12:26:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:07,379 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-16 12:26:07,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-16 12:26:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:07,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:07,384 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:07,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:26:07,598 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:07,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 4 times [2020-10-16 12:26:07,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:07,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285843610] [2020-10-16 12:26:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285843610] [2020-10-16 12:26:07,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439570760] [2020-10-16 12:26:07,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:07,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:07,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:07,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:07,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:07,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:07,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [307130506] [2020-10-16 12:26:07,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:07,802 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:07,805 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:07,805 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:07,823 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,834 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,834 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,847 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:07,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:07,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:07,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:07,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,848 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 7 states. [2020-10-16 12:26:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:07,906 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-16 12:26:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:07,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:07,909 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:26:07,909 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:07,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-16 12:26:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:26:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-16 12:26:07,915 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-16 12:26:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:07,916 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-16 12:26:07,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-16 12:26:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:07,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:07,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:08,132 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 5 times [2020-10-16 12:26:08,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441202753] [2020-10-16 12:26:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441202753] [2020-10-16 12:26:08,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847708498] [2020-10-16 12:26:08,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:08,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:08,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:08,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:08,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:08,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:08,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [797016985] [2020-10-16 12:26:08,342 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:08,343 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:08,346 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 12:26:08,346 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:08,347 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,378 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,404 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,405 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,415 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,415 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,422 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3327#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:08,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:08,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:08,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:08,423 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 8 states. [2020-10-16 12:26:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,482 INFO L93 Difference]: Finished difference Result 118 states and 278 transitions. [2020-10-16 12:26:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:08,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,484 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:26:08,484 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:08,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2020-10-16 12:26:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:26:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 236 transitions. [2020-10-16 12:26:08,490 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 236 transitions. Word has length 11 [2020-10-16 12:26:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,490 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 236 transitions. [2020-10-16 12:26:08,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 236 transitions. [2020-10-16 12:26:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:08,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:08,491 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:08,692 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 6 times [2020-10-16 12:26:08,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347725291] [2020-10-16 12:26:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347725291] [2020-10-16 12:26:08,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028028297] [2020-10-16 12:26:08,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:08,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:08,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:08,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:08,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:08,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [900023363] [2020-10-16 12:26:08,913 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:08,914 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:08,916 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:08,916 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:08,924 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,938 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:08,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:08,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:08,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:08,939 INFO L87 Difference]: Start difference. First operand 96 states and 236 transitions. Second operand 7 states. [2020-10-16 12:26:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,992 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-16 12:26:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:08,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,994 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:08,994 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 12:26:08,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 12:26:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2020-10-16 12:26:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-16 12:26:08,999 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-16 12:26:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,999 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-16 12:26:08,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-16 12:26:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:09,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 12:26:09,212 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 7 times [2020-10-16 12:26:09,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:09,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025727846] [2020-10-16 12:26:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025727846] [2020-10-16 12:26:09,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195733904] [2020-10-16 12:26:09,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:09,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:09,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [517867255] [2020-10-16 12:26:09,435 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:09,436 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:09,438 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:09,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:09,442 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,443 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,472 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,507 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:09,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,546 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4042#(and (< ~i~0 144) (<= ~j~0 5)), 4043#(and (<= (+ ~i~0 ~j~0) 5) (< ~i~0 144))] [2020-10-16 12:26:09,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:09,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:09,547 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 9 states. [2020-10-16 12:26:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:09,654 INFO L93 Difference]: Finished difference Result 138 states and 324 transitions. [2020-10-16 12:26:09,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:09,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-16 12:26:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:09,655 INFO L225 Difference]: With dead ends: 138 [2020-10-16 12:26:09,656 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:26:09,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:26:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-10-16 12:26:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 235 transitions. [2020-10-16 12:26:09,661 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 235 transitions. Word has length 11 [2020-10-16 12:26:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:09,661 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 235 transitions. [2020-10-16 12:26:09,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 235 transitions. [2020-10-16 12:26:09,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,662 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:09,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:09,874 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:09,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 8 times [2020-10-16 12:26:09,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:09,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873669258] [2020-10-16 12:26:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873669258] [2020-10-16 12:26:09,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737407141] [2020-10-16 12:26:09,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:09,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:09,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:09,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:10,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:10,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [898184428] [2020-10-16 12:26:10,070 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:10,071 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:10,072 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:10,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:10,083 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:10,084 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:10,104 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4427#(and (< ~i~0 144) (<= ~j~0 5))] [2020-10-16 12:26:10,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:10,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:10,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:10,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:10,105 INFO L87 Difference]: Start difference. First operand 98 states and 235 transitions. Second operand 8 states. [2020-10-16 12:26:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:10,240 INFO L93 Difference]: Finished difference Result 134 states and 315 transitions. [2020-10-16 12:26:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:10,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:10,242 INFO L225 Difference]: With dead ends: 134 [2020-10-16 12:26:10,242 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 12:26:10,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 12:26:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2020-10-16 12:26:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-16 12:26:10,248 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-16 12:26:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:10,248 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-16 12:26:10,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-16 12:26:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:10,249 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:10,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:26:10,463 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:10,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-16 12:26:10,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:10,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265029817] [2020-10-16 12:26:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265029817] [2020-10-16 12:26:10,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243289705] [2020-10-16 12:26:10,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:10,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:10,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:10,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:10,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:10,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:10,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-16 12:26:10,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [469159162] [2020-10-16 12:26:10,688 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:10,688 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:10,690 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:10,691 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:10,718 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:10,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:10,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:10,719 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-16 12:26:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:10,822 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-16 12:26:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:10,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:10,824 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:26:10,824 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 12:26:10,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 12:26:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-16 12:26:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-16 12:26:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-16 12:26:10,829 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-16 12:26:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:10,829 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-16 12:26:10,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-16 12:26:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:10,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:10,830 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:11,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:26:11,031 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:11,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:11,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 4 times [2020-10-16 12:26:11,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:11,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46530686] [2020-10-16 12:26:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46530686] [2020-10-16 12:26:11,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857973212] [2020-10-16 12:26:11,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:11,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:11,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:11,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:11,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1982467986] [2020-10-16 12:26:11,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,316 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,318 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:11,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,319 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:11,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,341 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,341 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,384 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,384 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,415 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,415 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,443 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5218#(and (< ~i~0 144) (<= ~j~0 5)), 5219#(and (<= ~j~0 (+ (* 3 ~i~0) 1)) (= ~i~0 1)), 5220#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 5221#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:11,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:11,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:11,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:11,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:11,445 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-16 12:26:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:11,514 INFO L93 Difference]: Finished difference Result 153 states and 366 transitions. [2020-10-16 12:26:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:11,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-16 12:26:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:11,516 INFO L225 Difference]: With dead ends: 153 [2020-10-16 12:26:11,516 INFO L226 Difference]: Without dead ends: 147 [2020-10-16 12:26:11,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-16 12:26:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-16 12:26:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-16 12:26:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-16 12:26:11,521 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 11 [2020-10-16 12:26:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:11,521 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-16 12:26:11,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-16 12:26:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:11,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:11,522 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:11,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 12:26:11,732 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:11,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:11,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 9 times [2020-10-16 12:26:11,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:11,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121754152] [2020-10-16 12:26:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121754152] [2020-10-16 12:26:11,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176838200] [2020-10-16 12:26:11,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:11,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:11,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:11,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:11,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1942391354] [2020-10-16 12:26:11,971 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,972 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,975 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:11,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,988 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,988 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,011 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,018 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,019 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 8 states. [2020-10-16 12:26:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:12,063 INFO L93 Difference]: Finished difference Result 137 states and 327 transitions. [2020-10-16 12:26:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:12,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:12,065 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:26:12,065 INFO L226 Difference]: Without dead ends: 135 [2020-10-16 12:26:12,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-16 12:26:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 116. [2020-10-16 12:26:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:26:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-16 12:26:12,070 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-16 12:26:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:12,070 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-16 12:26:12,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-16 12:26:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:12,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:12,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:26:12,281 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 10 times [2020-10-16 12:26:12,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678054184] [2020-10-16 12:26:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678054184] [2020-10-16 12:26:12,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193931300] [2020-10-16 12:26:12,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:12,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:12,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:12,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:12,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:12,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094751344] [2020-10-16 12:26:12,516 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:12,518 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:12,519 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:12,520 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:12,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,534 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,540 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,540 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,545 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,546 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 8 states. [2020-10-16 12:26:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:12,619 INFO L93 Difference]: Finished difference Result 142 states and 337 transitions. [2020-10-16 12:26:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:12,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:12,621 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:26:12,621 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 12:26:12,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 12:26:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-10-16 12:26:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 283 transitions. [2020-10-16 12:26:12,626 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 283 transitions. Word has length 12 [2020-10-16 12:26:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:12,626 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 283 transitions. [2020-10-16 12:26:12,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 283 transitions. [2020-10-16 12:26:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:12,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:12,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:12,828 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 11 times [2020-10-16 12:26:12,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083505395] [2020-10-16 12:26:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083505395] [2020-10-16 12:26:12,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940280792] [2020-10-16 12:26:12,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:13,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:13,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:13,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:13,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:13,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1632057941] [2020-10-16 12:26:13,124 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:13,126 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:13,129 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:13,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:13,134 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,135 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,157 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,157 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,166 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:13,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:13,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:13,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:13,167 INFO L87 Difference]: Start difference. First operand 114 states and 283 transitions. Second operand 8 states. [2020-10-16 12:26:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,262 INFO L93 Difference]: Finished difference Result 144 states and 341 transitions. [2020-10-16 12:26:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:13,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,264 INFO L225 Difference]: With dead ends: 144 [2020-10-16 12:26:13,264 INFO L226 Difference]: Without dead ends: 142 [2020-10-16 12:26:13,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-16 12:26:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2020-10-16 12:26:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 286 transitions. [2020-10-16 12:26:13,272 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 286 transitions. Word has length 12 [2020-10-16 12:26:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,272 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 286 transitions. [2020-10-16 12:26:13,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 286 transitions. [2020-10-16 12:26:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,274 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:13,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,489 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1441314348, now seen corresponding path program 12 times [2020-10-16 12:26:13,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:13,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324852326] [2020-10-16 12:26:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324852326] [2020-10-16 12:26:13,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657065752] [2020-10-16 12:26:13,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:13,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:13,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:13,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:13,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:13,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:13,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [134880383] [2020-10-16 12:26:13,811 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:13,812 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:13,815 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:13,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:13,824 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,845 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,846 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,856 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:13,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:13,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:13,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:13,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:13,859 INFO L87 Difference]: Start difference. First operand 115 states and 286 transitions. Second operand 8 states. [2020-10-16 12:26:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,961 INFO L93 Difference]: Finished difference Result 145 states and 343 transitions. [2020-10-16 12:26:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:13,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,964 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:26:13,964 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:26:13,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:26:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-16 12:26:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 284 transitions. [2020-10-16 12:26:13,972 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 284 transitions. Word has length 12 [2020-10-16 12:26:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,973 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 284 transitions. [2020-10-16 12:26:13,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 284 transitions. [2020-10-16 12:26:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:14,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:14,189 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:14,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 13 times [2020-10-16 12:26:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:14,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360589479] [2020-10-16 12:26:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360589479] [2020-10-16 12:26:14,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103415105] [2020-10-16 12:26:14,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:14,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:14,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:14,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:14,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1931063696] [2020-10-16 12:26:14,556 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:14,558 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:14,561 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:14,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:14,573 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,610 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,611 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,634 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,635 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,655 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7329#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:14,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:14,669 INFO L87 Difference]: Start difference. First operand 115 states and 284 transitions. Second operand 9 states. [2020-10-16 12:26:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:14,781 INFO L93 Difference]: Finished difference Result 143 states and 338 transitions. [2020-10-16 12:26:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:14,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:14,783 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:26:14,784 INFO L226 Difference]: Without dead ends: 141 [2020-10-16 12:26:14,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-16 12:26:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2020-10-16 12:26:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 289 transitions. [2020-10-16 12:26:14,791 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 289 transitions. Word has length 12 [2020-10-16 12:26:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:14,791 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 289 transitions. [2020-10-16 12:26:14,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 289 transitions. [2020-10-16 12:26:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:14,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:14,793 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 12:26:15,008 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 14 times [2020-10-16 12:26:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644362609] [2020-10-16 12:26:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644362609] [2020-10-16 12:26:15,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596270641] [2020-10-16 12:26:15,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:15,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:15,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:15,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [613869224] [2020-10-16 12:26:15,366 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:15,387 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:15,391 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:15,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:15,393 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,393 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,431 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,462 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,462 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,484 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,493 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7757#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:15,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:15,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:15,495 INFO L87 Difference]: Start difference. First operand 117 states and 289 transitions. Second operand 9 states. [2020-10-16 12:26:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:15,614 INFO L93 Difference]: Finished difference Result 146 states and 344 transitions. [2020-10-16 12:26:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:15,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:15,617 INFO L225 Difference]: With dead ends: 146 [2020-10-16 12:26:15,617 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 12:26:15,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 12:26:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2020-10-16 12:26:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 283 transitions. [2020-10-16 12:26:15,625 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 283 transitions. Word has length 12 [2020-10-16 12:26:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:15,625 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 283 transitions. [2020-10-16 12:26:15,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 283 transitions. [2020-10-16 12:26:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:15,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:15,627 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 12:26:15,841 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 15 times [2020-10-16 12:26:15,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22154147] [2020-10-16 12:26:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22154147] [2020-10-16 12:26:15,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057052785] [2020-10-16 12:26:15,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:16,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:16,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1094946084] [2020-10-16 12:26:16,137 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,138 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,140 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:16,141 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,149 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,150 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,164 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:16,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:16,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:16,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:16,165 INFO L87 Difference]: Start difference. First operand 115 states and 283 transitions. Second operand 8 states. [2020-10-16 12:26:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:16,217 INFO L93 Difference]: Finished difference Result 151 states and 355 transitions. [2020-10-16 12:26:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:16,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:16,219 INFO L225 Difference]: With dead ends: 151 [2020-10-16 12:26:16,219 INFO L226 Difference]: Without dead ends: 149 [2020-10-16 12:26:16,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-16 12:26:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-10-16 12:26:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-16 12:26:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-16 12:26:16,224 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-16 12:26:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:16,224 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-16 12:26:16,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-16 12:26:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:16,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:16,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:16,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 12:26:16,438 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:16,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:16,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 16 times [2020-10-16 12:26:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:16,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685594468] [2020-10-16 12:26:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685594468] [2020-10-16 12:26:16,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689241042] [2020-10-16 12:26:16,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:16,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:16,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1964815143] [2020-10-16 12:26:16,672 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,673 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,675 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:16,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,680 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,681 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,695 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:16,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:16,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:16,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:16,696 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 8 states. [2020-10-16 12:26:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:16,765 INFO L93 Difference]: Finished difference Result 152 states and 357 transitions. [2020-10-16 12:26:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:16,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:16,767 INFO L225 Difference]: With dead ends: 152 [2020-10-16 12:26:16,767 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 12:26:16,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 12:26:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 117. [2020-10-16 12:26:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 289 transitions. [2020-10-16 12:26:16,773 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 289 transitions. Word has length 12 [2020-10-16 12:26:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:16,773 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 289 transitions. [2020-10-16 12:26:16,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 289 transitions. [2020-10-16 12:26:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:16,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:16,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:16,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 12:26:16,984 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:16,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:16,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 17 times [2020-10-16 12:26:16,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:16,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352952591] [2020-10-16 12:26:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352952591] [2020-10-16 12:26:17,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517869171] [2020-10-16 12:26:17,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:17,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:17,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:17,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:17,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:17,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1672159955] [2020-10-16 12:26:17,200 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:17,201 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:17,203 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:17,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:17,206 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:17,206 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,220 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,220 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,241 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9057#(and (<= (+ ~i~0 (* 2 ~j~0)) 8) (< ~i~0 144))] [2020-10-16 12:26:17,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:17,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:17,242 INFO L87 Difference]: Start difference. First operand 117 states and 289 transitions. Second operand 9 states. [2020-10-16 12:26:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:17,383 INFO L93 Difference]: Finished difference Result 161 states and 377 transitions. [2020-10-16 12:26:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:17,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:17,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:17,385 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:26:17,385 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:17,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2020-10-16 12:26:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 12:26:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 300 transitions. [2020-10-16 12:26:17,390 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 300 transitions. Word has length 12 [2020-10-16 12:26:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:17,390 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 300 transitions. [2020-10-16 12:26:17,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 300 transitions. [2020-10-16 12:26:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:17,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:17,391 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:17,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 12:26:17,592 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:17,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2078543838, now seen corresponding path program 18 times [2020-10-16 12:26:17,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:17,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597608323] [2020-10-16 12:26:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597608323] [2020-10-16 12:26:17,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996125454] [2020-10-16 12:26:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:17,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:17,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:17,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:17,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:17,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1217483584] [2020-10-16 12:26:17,832 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:17,833 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:17,835 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:17,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:17,839 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,860 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,860 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,890 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:17,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,901 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,901 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,925 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [9513#(and (<= ~j~0 7) (< ~i~0 144)), 9514#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 7)), 9515#(and (< ~i~0 144) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-16 12:26:17,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:17,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:17,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:17,926 INFO L87 Difference]: Start difference. First operand 120 states and 300 transitions. Second operand 11 states. [2020-10-16 12:26:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:18,128 INFO L93 Difference]: Finished difference Result 172 states and 403 transitions. [2020-10-16 12:26:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:18,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-16 12:26:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:18,130 INFO L225 Difference]: With dead ends: 172 [2020-10-16 12:26:18,130 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:18,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 116. [2020-10-16 12:26:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:26:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 288 transitions. [2020-10-16 12:26:18,135 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 288 transitions. Word has length 12 [2020-10-16 12:26:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:18,135 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 288 transitions. [2020-10-16 12:26:18,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 288 transitions. [2020-10-16 12:26:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:18,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:18,136 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:18,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:18,347 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:18,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 19 times [2020-10-16 12:26:18,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:18,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773901349] [2020-10-16 12:26:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773901349] [2020-10-16 12:26:18,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485691239] [2020-10-16 12:26:18,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:18,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:18,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1939212269] [2020-10-16 12:26:18,572 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:18,574 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:18,577 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-10-16 12:26:18,577 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:18,581 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:18,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:18,615 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:18,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:18,639 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9978#(and (< ~i~0 144) (<= ~j~0 5))] [2020-10-16 12:26:18,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:18,640 INFO L87 Difference]: Start difference. First operand 116 states and 288 transitions. Second operand 9 states. [2020-10-16 12:26:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:18,782 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-16 12:26:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:18,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:18,784 INFO L225 Difference]: With dead ends: 167 [2020-10-16 12:26:18,784 INFO L226 Difference]: Without dead ends: 162 [2020-10-16 12:26:18,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-16 12:26:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 118. [2020-10-16 12:26:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 12:26:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-16 12:26:18,791 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-16 12:26:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:18,791 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-16 12:26:18,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-16 12:26:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:18,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:18,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:19,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:26:19,005 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:19,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 20 times [2020-10-16 12:26:19,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:19,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298654296] [2020-10-16 12:26:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298654296] [2020-10-16 12:26:19,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359972020] [2020-10-16 12:26:19,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:19,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:19,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:19,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:19,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:19,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1781475669] [2020-10-16 12:26:19,215 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:19,216 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:19,218 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 12:26:19,218 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:19,232 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:19,233 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:19,252 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10436#(and (< ~i~0 144) (<= ~j~0 8))] [2020-10-16 12:26:19,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:19,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:19,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:19,253 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 9 states. [2020-10-16 12:26:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:19,490 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-16 12:26:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:19,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:19,491 INFO L225 Difference]: With dead ends: 166 [2020-10-16 12:26:19,492 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 12:26:19,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 12:26:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 117. [2020-10-16 12:26:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 282 transitions. [2020-10-16 12:26:19,497 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 282 transitions. Word has length 12 [2020-10-16 12:26:19,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:19,498 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 282 transitions. [2020-10-16 12:26:19,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 282 transitions. [2020-10-16 12:26:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:19,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:19,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:19,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:26:19,710 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 21 times [2020-10-16 12:26:19,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:19,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563071951] [2020-10-16 12:26:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563071951] [2020-10-16 12:26:19,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887356478] [2020-10-16 12:26:19,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:19,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:19,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:19,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:19,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:19,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:19,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [558307232] [2020-10-16 12:26:19,914 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:19,916 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:19,917 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-16 12:26:19,918 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:19,930 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:19,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:19,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:19,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:19,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:19,931 INFO L87 Difference]: Start difference. First operand 117 states and 282 transitions. Second operand 8 states. [2020-10-16 12:26:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:20,082 INFO L93 Difference]: Finished difference Result 162 states and 371 transitions. [2020-10-16 12:26:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:20,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:20,084 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:20,084 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:20,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 117. [2020-10-16 12:26:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 285 transitions. [2020-10-16 12:26:20,091 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 285 transitions. Word has length 12 [2020-10-16 12:26:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:20,091 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 285 transitions. [2020-10-16 12:26:20,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 285 transitions. [2020-10-16 12:26:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:20,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:20,092 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:20,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:20,306 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 22 times [2020-10-16 12:26:20,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:20,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920614263] [2020-10-16 12:26:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920614263] [2020-10-16 12:26:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914047864] [2020-10-16 12:26:20,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:20,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:20,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:20,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:20,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:20,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:20,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [187075371] [2020-10-16 12:26:20,531 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:20,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:20,535 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:20,535 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:20,545 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:20,546 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:20,577 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:20,578 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:20,621 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [11349#(and (< ~i~0 144) (<= ~j~0 8)), 11350#(and (<= (+ ~i~0 ~j~0) 8) (< ~i~0 144))] [2020-10-16 12:26:20,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:20,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:20,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:20,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:20,622 INFO L87 Difference]: Start difference. First operand 117 states and 285 transitions. Second operand 10 states. [2020-10-16 12:26:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:20,878 INFO L93 Difference]: Finished difference Result 173 states and 407 transitions. [2020-10-16 12:26:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:20,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-16 12:26:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:20,880 INFO L225 Difference]: With dead ends: 173 [2020-10-16 12:26:20,880 INFO L226 Difference]: Without dead ends: 168 [2020-10-16 12:26:20,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-16 12:26:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 115. [2020-10-16 12:26:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:20,886 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:20,886 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:20,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:20,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:20,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:21,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:21,100 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:21,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 23 times [2020-10-16 12:26:21,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:21,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783338307] [2020-10-16 12:26:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783338307] [2020-10-16 12:26:21,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510361615] [2020-10-16 12:26:21,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:21,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:21,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:21,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:21,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1810557755] [2020-10-16 12:26:21,396 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:21,398 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:21,400 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-16 12:26:21,401 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:21,418 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,418 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11814#(and (<= ~j~0 7) (< ~i~0 144))] [2020-10-16 12:26:21,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:21,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:21,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:21,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:21,444 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 9 states. [2020-10-16 12:26:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:21,692 INFO L93 Difference]: Finished difference Result 161 states and 376 transitions. [2020-10-16 12:26:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:21,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:21,695 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:26:21,695 INFO L226 Difference]: Without dead ends: 156 [2020-10-16 12:26:21,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-16 12:26:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2020-10-16 12:26:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-16 12:26:21,701 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-16 12:26:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:21,701 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-16 12:26:21,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-16 12:26:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:21,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:21,702 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:21,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-16 12:26:21,913 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-16 12:26:21,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:21,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316706073] [2020-10-16 12:26:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316706073] [2020-10-16 12:26:21,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634627196] [2020-10-16 12:26:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:22,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:22,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:22,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:22,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:22,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:22,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:26:22,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [612265392] [2020-10-16 12:26:22,160 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:22,162 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:22,163 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-16 12:26:22,164 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:22,198 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:22,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:22,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:22,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:22,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:22,199 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-16 12:26:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:22,302 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-16 12:26:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:22,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:22,304 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:26:22,304 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:22,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-16 12:26:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 12:26:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-16 12:26:22,310 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-16 12:26:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:22,310 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-16 12:26:22,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-16 12:26:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:22,311 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:22,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:22,521 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 5 times [2020-10-16 12:26:22,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:22,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251504427] [2020-10-16 12:26:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251504427] [2020-10-16 12:26:22,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266359689] [2020-10-16 12:26:22,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:22,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:22,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:22,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:22,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:22,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:22,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [161345207] [2020-10-16 12:26:22,886 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:22,887 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:22,889 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:22,890 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:22,891 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:22,891 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,921 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,921 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,962 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,962 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,009 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,009 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,049 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,049 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,090 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [12736#(and (= ~i~0 1) (<= (+ ~i~0 ~j~0) 6)), 12737#(and (<= ~j~0 (+ (* 3 ~i~0) 1)) (= ~i~0 1)), 12738#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 12739#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1)), 12735#(and (<= ~j~0 6) (< ~i~0 144))] [2020-10-16 12:26:23,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:26:23,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:26:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:23,091 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-16 12:26:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,173 INFO L93 Difference]: Finished difference Result 184 states and 440 transitions. [2020-10-16 12:26:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:23,174 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-16 12:26:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,176 INFO L225 Difference]: With dead ends: 184 [2020-10-16 12:26:23,176 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 12:26:23,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 12:26:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-16 12:26:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-16 12:26:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-16 12:26:23,181 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 12 [2020-10-16 12:26:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,181 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-16 12:26:23,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:26:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-16 12:26:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,182 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 12:26:23,394 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 24 times [2020-10-16 12:26:23,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549229853] [2020-10-16 12:26:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549229853] [2020-10-16 12:26:23,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612098473] [2020-10-16 12:26:23,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:23,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:23,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:23,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:23,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:23,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:23,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [898444882] [2020-10-16 12:26:23,656 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:23,657 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:23,661 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:26:23,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:23,666 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,667 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,689 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,690 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,696 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:23,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:23,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:23,697 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 9 states. [2020-10-16 12:26:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,738 INFO L93 Difference]: Finished difference Result 162 states and 389 transitions. [2020-10-16 12:26:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:23,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,739 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:23,740 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:23,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2020-10-16 12:26:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 345 transitions. [2020-10-16 12:26:23,745 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 345 transitions. Word has length 13 [2020-10-16 12:26:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,745 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 345 transitions. [2020-10-16 12:26:23,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 345 transitions. [2020-10-16 12:26:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:23,956 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 25 times [2020-10-16 12:26:23,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025024052] [2020-10-16 12:26:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025024052] [2020-10-16 12:26:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016759156] [2020-10-16 12:26:24,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:24,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2112349288] [2020-10-16 12:26:24,232 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,233 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,235 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:24,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,258 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,259 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,265 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,265 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,271 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,272 INFO L87 Difference]: Start difference. First operand 137 states and 345 transitions. Second operand 9 states. [2020-10-16 12:26:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:24,333 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:24,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:24,341 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:24,341 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:24,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 135. [2020-10-16 12:26:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:24,348 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:24,348 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:24,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:24,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:24,350 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:24,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 12:26:24,563 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 26 times [2020-10-16 12:26:24,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:24,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622357262] [2020-10-16 12:26:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622357262] [2020-10-16 12:26:24,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133876813] [2020-10-16 12:26:24,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:24,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:24,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:24,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:24,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [195315803] [2020-10-16 12:26:24,906 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,907 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,910 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:24,910 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,941 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,949 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,949 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,957 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,959 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:25,064 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:25,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:25,066 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:25,066 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:25,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2020-10-16 12:26:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-16 12:26:25,072 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-16 12:26:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:25,072 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-16 12:26:25,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-16 12:26:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:25,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:25,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:26:25,284 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148993, now seen corresponding path program 27 times [2020-10-16 12:26:25,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911251841] [2020-10-16 12:26:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911251841] [2020-10-16 12:26:25,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956933318] [2020-10-16 12:26:25,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:25,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:25,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:25,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:25,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:25,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:25,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [238334199] [2020-10-16 12:26:25,578 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:25,579 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:25,581 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:25,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:25,597 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,597 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,610 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,611 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,618 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:25,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:25,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:25,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:25,619 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 9 states. [2020-10-16 12:26:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:25,706 INFO L93 Difference]: Finished difference Result 171 states and 408 transitions. [2020-10-16 12:26:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:25,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:25,708 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:25,708 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:25,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2020-10-16 12:26:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 333 transitions. [2020-10-16 12:26:25,712 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 333 transitions. Word has length 13 [2020-10-16 12:26:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:25,713 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 333 transitions. [2020-10-16 12:26:25,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 333 transitions. [2020-10-16 12:26:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:25,714 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 12:26:25,925 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 28 times [2020-10-16 12:26:25,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985336257] [2020-10-16 12:26:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985336257] [2020-10-16 12:26:26,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421031677] [2020-10-16 12:26:26,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:26,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:26,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:26,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:26,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1010430787] [2020-10-16 12:26:26,185 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,186 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,190 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,190 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,203 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,203 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,208 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,208 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,216 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,217 INFO L87 Difference]: Start difference. First operand 133 states and 333 transitions. Second operand 9 states. [2020-10-16 12:26:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,323 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,325 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:26,325 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:26,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:26,331 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,331 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:26,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,332 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:26,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:26:26,544 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 29 times [2020-10-16 12:26:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721340300] [2020-10-16 12:26:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721340300] [2020-10-16 12:26:26,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723729108] [2020-10-16 12:26:26,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:26,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:26,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:26,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:26,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [4175673] [2020-10-16 12:26:26,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,795 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,796 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,807 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,807 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,824 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,830 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,831 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,955 INFO L93 Difference]: Finished difference Result 174 states and 413 transitions. [2020-10-16 12:26:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,962 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:26:26,962 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 12:26:26,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 12:26:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 134. [2020-10-16 12:26:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-16 12:26:26,966 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-16 12:26:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,966 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-16 12:26:26,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-16 12:26:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,967 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:26:27,168 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 30 times [2020-10-16 12:26:27,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019356582] [2020-10-16 12:26:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019356582] [2020-10-16 12:26:27,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327926307] [2020-10-16 12:26:27,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:27,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:27,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:27,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:27,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:27,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [377306460] [2020-10-16 12:26:27,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:27,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:27,424 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:27,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:27,436 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,436 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,440 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,440 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,448 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:27,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:27,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:27,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:27,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:27,449 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 9 states. [2020-10-16 12:26:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:27,566 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:27,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:27,567 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:27,568 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:27,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:27,571 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:27,572 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:27,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:27,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:27,573 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-16 12:26:27,783 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1731072514, now seen corresponding path program 31 times [2020-10-16 12:26:27,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587986587] [2020-10-16 12:26:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587986587] [2020-10-16 12:26:27,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549803984] [2020-10-16 12:26:27,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:28,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:28,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1830908255] [2020-10-16 12:26:28,038 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:28,040 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:28,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:28,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:28,053 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,054 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,058 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,058 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,071 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:28,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:28,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:28,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:28,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:28,072 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,182 INFO L93 Difference]: Finished difference Result 171 states and 409 transitions. [2020-10-16 12:26:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:28,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,184 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:28,184 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:28,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-10-16 12:26:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-16 12:26:28,189 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 13 [2020-10-16 12:26:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,189 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-16 12:26:28,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-16 12:26:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:28,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-16 12:26:28,401 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:28,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 32 times [2020-10-16 12:26:28,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:28,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152439690] [2020-10-16 12:26:28,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152439690] [2020-10-16 12:26:28,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681566058] [2020-10-16 12:26:28,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:28,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:28,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:28,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:28,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:28,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [19259887] [2020-10-16 12:26:28,655 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:28,656 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:28,658 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:28,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:28,659 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,694 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,713 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,714 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,731 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,732 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,739 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17197#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:28,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:28,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:28,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:28,740 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,869 INFO L93 Difference]: Finished difference Result 172 states and 410 transitions. [2020-10-16 12:26:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:28,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,871 INFO L225 Difference]: With dead ends: 172 [2020-10-16 12:26:28,871 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 12:26:28,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 12:26:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-16 12:26:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2020-10-16 12:26:28,876 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 13 [2020-10-16 12:26:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,876 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2020-10-16 12:26:28,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2020-10-16 12:26:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,877 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,078 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 33 times [2020-10-16 12:26:29,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810429843] [2020-10-16 12:26:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810429843] [2020-10-16 12:26:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752288013] [2020-10-16 12:26:29,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:29,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:29,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:29,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:29,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:29,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [421243821] [2020-10-16 12:26:29,320 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:29,321 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:29,323 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:29,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:29,325 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,326 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,353 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,378 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,395 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,396 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,403 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17699#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:29,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:29,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:29,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:29,405 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 10 states. [2020-10-16 12:26:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:29,527 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-16 12:26:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:29,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:29,529 INFO L225 Difference]: With dead ends: 175 [2020-10-16 12:26:29,529 INFO L226 Difference]: Without dead ends: 173 [2020-10-16 12:26:29,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-16 12:26:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 137. [2020-10-16 12:26:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 342 transitions. [2020-10-16 12:26:29,533 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 342 transitions. Word has length 13 [2020-10-16 12:26:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:29,534 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 342 transitions. [2020-10-16 12:26:29,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 342 transitions. [2020-10-16 12:26:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:29,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:29,535 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 12:26:29,737 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 34 times [2020-10-16 12:26:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627361305] [2020-10-16 12:26:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627361305] [2020-10-16 12:26:29,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244506591] [2020-10-16 12:26:29,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:29,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:29,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:29,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:29,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:29,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [644006736] [2020-10-16 12:26:29,996 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:29,997 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:30,000 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:30,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:30,001 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,002 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,028 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,029 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,051 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,051 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,060 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,060 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,066 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18206#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:30,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:30,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:30,067 INFO L87 Difference]: Start difference. First operand 137 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:30,179 INFO L93 Difference]: Finished difference Result 173 states and 411 transitions. [2020-10-16 12:26:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:30,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:30,182 INFO L225 Difference]: With dead ends: 173 [2020-10-16 12:26:30,182 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 12:26:30,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 12:26:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-10-16 12:26:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-16 12:26:30,187 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-16 12:26:30,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:30,187 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-16 12:26:30,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-16 12:26:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:30,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:30,188 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:30,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:30,399 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1758778144, now seen corresponding path program 35 times [2020-10-16 12:26:30,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:30,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990026120] [2020-10-16 12:26:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990026120] [2020-10-16 12:26:30,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515513387] [2020-10-16 12:26:30,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:30,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:30,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:30,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:30,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:30,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:30,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1066369155] [2020-10-16 12:26:30,668 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:30,669 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:30,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:30,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:30,674 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,675 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,702 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,724 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,724 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,734 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,734 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,746 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18715#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:30,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:30,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:30,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:30,747 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 10 states. [2020-10-16 12:26:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:30,861 INFO L93 Difference]: Finished difference Result 177 states and 419 transitions. [2020-10-16 12:26:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:30,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:30,863 INFO L225 Difference]: With dead ends: 177 [2020-10-16 12:26:30,863 INFO L226 Difference]: Without dead ends: 175 [2020-10-16 12:26:30,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-16 12:26:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 137. [2020-10-16 12:26:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-16 12:26:30,867 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-16 12:26:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:30,867 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-16 12:26:30,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-16 12:26:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:30,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:30,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:31,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 12:26:31,078 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:31,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:31,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1759670913, now seen corresponding path program 36 times [2020-10-16 12:26:31,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:31,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623360280] [2020-10-16 12:26:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623360280] [2020-10-16 12:26:31,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135140872] [2020-10-16 12:26:31,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:31,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:31,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:31,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:31,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:31,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:31,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1400781244] [2020-10-16 12:26:31,371 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:31,372 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:31,374 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-10-16 12:26:31,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:31,396 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,396 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,422 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,441 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,442 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,473 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,489 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,503 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,503 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,516 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19224#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 19225#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:31,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:31,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:31,517 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 11 states. [2020-10-16 12:26:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:31,618 INFO L93 Difference]: Finished difference Result 179 states and 422 transitions. [2020-10-16 12:26:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:31,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:31,621 INFO L225 Difference]: With dead ends: 179 [2020-10-16 12:26:31,621 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 12:26:31,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 12:26:31,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-16 12:26:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 338 transitions. [2020-10-16 12:26:31,626 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 338 transitions. Word has length 13 [2020-10-16 12:26:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:31,626 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 338 transitions. [2020-10-16 12:26:31,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 338 transitions. [2020-10-16 12:26:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:31,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:31,627 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:31,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:31,840 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 37 times [2020-10-16 12:26:31,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:31,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071321472] [2020-10-16 12:26:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071321472] [2020-10-16 12:26:31,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611455986] [2020-10-16 12:26:31,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:32,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:32,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:32,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [394058673] [2020-10-16 12:26:32,125 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:32,127 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:32,129 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:32,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:32,143 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,144 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,162 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:32,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:32,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:32,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:32,163 INFO L87 Difference]: Start difference. First operand 136 states and 338 transitions. Second operand 9 states. [2020-10-16 12:26:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:32,215 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-10-16 12:26:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:32,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:32,216 INFO L225 Difference]: With dead ends: 182 [2020-10-16 12:26:32,216 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 12:26:32,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 12:26:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 141. [2020-10-16 12:26:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-16 12:26:32,221 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-16 12:26:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:32,221 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-16 12:26:32,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-16 12:26:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:32,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:32,222 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:32,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-16 12:26:32,431 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 38 times [2020-10-16 12:26:32,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:32,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504100338] [2020-10-16 12:26:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504100338] [2020-10-16 12:26:32,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993355581] [2020-10-16 12:26:32,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:32,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:32,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:32,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:32,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:32,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:32,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345935505] [2020-10-16 12:26:32,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:32,681 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:32,683 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:32,683 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:32,696 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,709 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:32,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:32,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:32,710 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 9 states. [2020-10-16 12:26:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:32,782 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-16 12:26:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:32,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:32,784 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:32,784 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 12:26:32,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 12:26:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-16 12:26:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 350 transitions. [2020-10-16 12:26:32,790 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 350 transitions. Word has length 13 [2020-10-16 12:26:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:32,790 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 350 transitions. [2020-10-16 12:26:32,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 350 transitions. [2020-10-16 12:26:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:32,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:32,791 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:33,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-16 12:26:33,002 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 39 times [2020-10-16 12:26:33,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:33,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983381450] [2020-10-16 12:26:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983381450] [2020-10-16 12:26:33,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689224810] [2020-10-16 12:26:33,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:33,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:33,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:33,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:33,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:33,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:33,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1643869901] [2020-10-16 12:26:33,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:33,316 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:33,317 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:33,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:33,328 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:33,328 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:33,335 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:33,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:33,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:33,336 INFO L87 Difference]: Start difference. First operand 140 states and 350 transitions. Second operand 9 states. [2020-10-16 12:26:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:33,444 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-16 12:26:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:33,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:33,445 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:33,445 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 12:26:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 12:26:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-16 12:26:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 350 transitions. [2020-10-16 12:26:33,450 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 350 transitions. Word has length 13 [2020-10-16 12:26:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:33,451 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 350 transitions. [2020-10-16 12:26:33,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 350 transitions. [2020-10-16 12:26:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:33,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:33,452 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:33,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 12:26:33,664 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 9426703, now seen corresponding path program 40 times [2020-10-16 12:26:33,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:33,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553492181] [2020-10-16 12:26:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553492181] [2020-10-16 12:26:33,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62087990] [2020-10-16 12:26:33,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:33,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:33,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:33,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:33,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:33,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [220306300] [2020-10-16 12:26:33,994 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:33,996 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:33,999 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:33,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:34,011 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:34,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,022 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:34,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:34,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:34,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:34,023 INFO L87 Difference]: Start difference. First operand 140 states and 350 transitions. Second operand 9 states. [2020-10-16 12:26:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:34,148 INFO L93 Difference]: Finished difference Result 186 states and 438 transitions. [2020-10-16 12:26:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:34,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:34,151 INFO L225 Difference]: With dead ends: 186 [2020-10-16 12:26:34,151 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:26:34,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:26:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 138. [2020-10-16 12:26:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 344 transitions. [2020-10-16 12:26:34,157 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 344 transitions. Word has length 13 [2020-10-16 12:26:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:34,157 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 344 transitions. [2020-10-16 12:26:34,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 344 transitions. [2020-10-16 12:26:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:34,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:34,159 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:34,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-16 12:26:34,372 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 41 times [2020-10-16 12:26:34,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:34,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489149466] [2020-10-16 12:26:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489149466] [2020-10-16 12:26:34,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235817769] [2020-10-16 12:26:34,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:34,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:34,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:34,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:34,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [788764219] [2020-10-16 12:26:34,626 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:34,626 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:34,628 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:34,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:34,630 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:34,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,655 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:34,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,669 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21810#(and (<= (+ ~i~0 (* 3 ~j~0)) 11) (< ~i~0 144))] [2020-10-16 12:26:34,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:34,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:34,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:34,670 INFO L87 Difference]: Start difference. First operand 138 states and 344 transitions. Second operand 10 states. [2020-10-16 12:26:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:34,829 INFO L93 Difference]: Finished difference Result 198 states and 464 transitions. [2020-10-16 12:26:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:34,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:34,831 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:34,831 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:34,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-16 12:26:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 12:26:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 358 transitions. [2020-10-16 12:26:34,836 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 358 transitions. Word has length 13 [2020-10-16 12:26:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:34,836 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 358 transitions. [2020-10-16 12:26:34,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 358 transitions. [2020-10-16 12:26:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:34,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:34,837 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:35,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:35,050 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 42 times [2020-10-16 12:26:35,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:35,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751352242] [2020-10-16 12:26:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751352242] [2020-10-16 12:26:35,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581846543] [2020-10-16 12:26:35,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:35,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:35,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:35,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:35,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:35,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:35,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1886060534] [2020-10-16 12:26:35,290 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:35,292 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:35,294 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:35,294 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:35,299 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:35,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,313 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,313 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,342 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22354#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 13) (< ~i~0 144))] [2020-10-16 12:26:35,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:35,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:35,343 INFO L87 Difference]: Start difference. First operand 142 states and 358 transitions. Second operand 10 states. [2020-10-16 12:26:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:35,516 INFO L93 Difference]: Finished difference Result 197 states and 462 transitions. [2020-10-16 12:26:35,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:35,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:35,518 INFO L225 Difference]: With dead ends: 197 [2020-10-16 12:26:35,519 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:35,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 141. [2020-10-16 12:26:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 355 transitions. [2020-10-16 12:26:35,523 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 355 transitions. Word has length 13 [2020-10-16 12:26:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:35,523 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 355 transitions. [2020-10-16 12:26:35,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 355 transitions. [2020-10-16 12:26:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:35,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:35,524 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:35,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:35,735 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 43 times [2020-10-16 12:26:35,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:35,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917070148] [2020-10-16 12:26:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917070148] [2020-10-16 12:26:35,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466528153] [2020-10-16 12:26:35,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:35,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:35,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:35,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:35,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [381584806] [2020-10-16 12:26:35,994 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:35,996 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:35,997 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:35,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:36,000 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:36,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,010 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,010 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,039 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,039 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,077 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [22896#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 12) (< ~i~0 144)), 22895#(and (<= (+ ~i~0 (* 2 ~j~0)) 12) (< ~i~0 144))] [2020-10-16 12:26:36,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:36,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:36,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:36,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:36,079 INFO L87 Difference]: Start difference. First operand 141 states and 355 transitions. Second operand 11 states. [2020-10-16 12:26:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:36,313 INFO L93 Difference]: Finished difference Result 199 states and 465 transitions. [2020-10-16 12:26:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:36,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:36,315 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:36,315 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:36,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 142. [2020-10-16 12:26:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 12:26:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 360 transitions. [2020-10-16 12:26:36,320 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 360 transitions. Word has length 13 [2020-10-16 12:26:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:36,321 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 360 transitions. [2020-10-16 12:26:36,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 360 transitions. [2020-10-16 12:26:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:36,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:36,321 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:36,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 12:26:36,524 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash 10350224, now seen corresponding path program 44 times [2020-10-16 12:26:36,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:36,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171805223] [2020-10-16 12:26:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171805223] [2020-10-16 12:26:36,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415924191] [2020-10-16 12:26:36,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:36,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:36,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:36,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:36,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:36,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:36,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2012280490] [2020-10-16 12:26:36,759 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:36,761 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:36,763 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:36,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:36,767 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:36,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,778 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,811 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,811 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,839 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,871 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,871 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,908 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [23445#(and (< ~i~0 144) (<= ~j~0 9)), 23446#(and (<= (+ ~i~0 ~j~0) 9) (< ~i~0 144)), 23447#(and (< ~i~0 144) (<= (+ (* 2 ~i~0) ~j~0) 9)), 23448#(and (<= (+ (* 3 ~i~0) ~j~0) 9) (< ~i~0 144))] [2020-10-16 12:26:36,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:26:36,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:36,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:26:36,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:36,910 INFO L87 Difference]: Start difference. First operand 142 states and 360 transitions. Second operand 13 states. [2020-10-16 12:26:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:37,187 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-16 12:26:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:37,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-16 12:26:37,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:37,190 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:26:37,190 INFO L226 Difference]: Without dead ends: 209 [2020-10-16 12:26:37,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-16 12:26:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 141. [2020-10-16 12:26:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 359 transitions. [2020-10-16 12:26:37,194 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 359 transitions. Word has length 13 [2020-10-16 12:26:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 359 transitions. [2020-10-16 12:26:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:26:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 359 transitions. [2020-10-16 12:26:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:37,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:37,195 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:37,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:37,400 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash 646656193, now seen corresponding path program 45 times [2020-10-16 12:26:37,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:37,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077635650] [2020-10-16 12:26:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077635650] [2020-10-16 12:26:37,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503796734] [2020-10-16 12:26:37,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:37,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:37,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:37,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:37,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:37,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1030547290] [2020-10-16 12:26:37,667 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:37,668 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:37,671 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 39 transitions. [2020-10-16 12:26:37,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:37,676 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:37,676 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,699 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:37,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,731 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:37,732 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,765 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:37,766 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,781 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [24012#(and (<= ~j~0 10) (< ~i~0 144)), 24013#(and (<= (+ ~i~0 ~j~0) 10) (< ~i~0 144)), 24014#(and (<= (+ (* 2 ~i~0) ~j~0) 10) (< ~i~0 144))] [2020-10-16 12:26:37,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:37,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:37,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:37,782 INFO L87 Difference]: Start difference. First operand 141 states and 359 transitions. Second operand 12 states. [2020-10-16 12:26:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:38,005 INFO L93 Difference]: Finished difference Result 215 states and 508 transitions. [2020-10-16 12:26:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:38,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:38,007 INFO L225 Difference]: With dead ends: 215 [2020-10-16 12:26:38,007 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 12:26:38,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 12:26:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2020-10-16 12:26:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 351 transitions. [2020-10-16 12:26:38,011 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 351 transitions. Word has length 13 [2020-10-16 12:26:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:38,011 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 351 transitions. [2020-10-16 12:26:38,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 351 transitions. [2020-10-16 12:26:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:38,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:38,012 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:38,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 12:26:38,223 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 46 times [2020-10-16 12:26:38,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:38,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533741184] [2020-10-16 12:26:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533741184] [2020-10-16 12:26:38,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697298982] [2020-10-16 12:26:38,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:38,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:38,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:38,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:38,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:38,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1547345887] [2020-10-16 12:26:38,457 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:38,459 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:38,461 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:38,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:38,465 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:38,465 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,485 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:38,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:38,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:38,486 INFO L87 Difference]: Start difference. First operand 139 states and 351 transitions. Second operand 9 states. [2020-10-16 12:26:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:38,605 INFO L93 Difference]: Finished difference Result 174 states and 420 transitions. [2020-10-16 12:26:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:38,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:38,607 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:26:38,607 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 12:26:38,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 12:26:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2020-10-16 12:26:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 348 transitions. [2020-10-16 12:26:38,610 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 348 transitions. Word has length 13 [2020-10-16 12:26:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:38,610 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 348 transitions. [2020-10-16 12:26:38,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 348 transitions. [2020-10-16 12:26:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:38,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:38,611 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:38,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 12:26:38,822 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:38,822 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 47 times [2020-10-16 12:26:38,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:38,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860478467] [2020-10-16 12:26:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860478467] [2020-10-16 12:26:38,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431741401] [2020-10-16 12:26:38,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:38,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:38,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:39,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:39,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1445656796] [2020-10-16 12:26:39,054 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:39,055 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:39,057 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-10-16 12:26:39,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:39,064 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:39,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:39,090 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:39,090 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:39,119 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25080#(and (<= ~j~0 6) (< ~i~0 144))] [2020-10-16 12:26:39,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:39,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:39,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:39,120 INFO L87 Difference]: Start difference. First operand 138 states and 348 transitions. Second operand 10 states. [2020-10-16 12:26:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:39,264 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:26:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:39,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:39,266 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:39,266 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:39,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:39,270 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:39,271 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:39,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:39,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:39,272 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:39,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 12:26:39,474 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 48 times [2020-10-16 12:26:39,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:39,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992336096] [2020-10-16 12:26:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992336096] [2020-10-16 12:26:39,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297701281] [2020-10-16 12:26:39,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:39,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:39,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:39,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:39,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:39,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [895283251] [2020-10-16 12:26:39,741 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:39,742 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:39,744 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:39,744 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:39,758 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:39,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:39,781 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25620#(and (<= ~j~0 11) (< ~i~0 144))] [2020-10-16 12:26:39,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:39,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:39,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:39,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:39,782 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:40,042 INFO L93 Difference]: Finished difference Result 205 states and 488 transitions. [2020-10-16 12:26:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:40,043 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:40,045 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:40,045 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 12:26:40,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 12:26:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-16 12:26:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:40,049 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:40,050 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:40,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:40,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:40,050 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:40,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 12:26:40,255 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:40,255 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 49 times [2020-10-16 12:26:40,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:40,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059325149] [2020-10-16 12:26:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059325149] [2020-10-16 12:26:40,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758568812] [2020-10-16 12:26:40,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:40,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:40,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:40,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [132420167] [2020-10-16 12:26:40,548 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:40,551 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:40,553 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:40,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:40,563 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:40,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:40,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:40,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:40,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:40,564 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 9 states. [2020-10-16 12:26:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:40,818 INFO L93 Difference]: Finished difference Result 199 states and 464 transitions. [2020-10-16 12:26:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:40,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:40,820 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:40,821 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:40,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 140. [2020-10-16 12:26:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 347 transitions. [2020-10-16 12:26:40,825 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 347 transitions. Word has length 13 [2020-10-16 12:26:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:40,825 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 347 transitions. [2020-10-16 12:26:40,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 347 transitions. [2020-10-16 12:26:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:40,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:40,826 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:41,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 12:26:41,027 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 50 times [2020-10-16 12:26:41,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:41,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745050263] [2020-10-16 12:26:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745050263] [2020-10-16 12:26:41,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617066447] [2020-10-16 12:26:41,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:41,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:41,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:41,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:41,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [388230649] [2020-10-16 12:26:41,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:41,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:41,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:41,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:41,296 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:41,296 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:41,320 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:41,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:41,349 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [26717#(and (< ~i~0 144) (<= ~j~0 13)), 26718#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 144))] [2020-10-16 12:26:41,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:41,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:41,351 INFO L87 Difference]: Start difference. First operand 140 states and 347 transitions. Second operand 11 states. [2020-10-16 12:26:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:41,652 INFO L93 Difference]: Finished difference Result 200 states and 478 transitions. [2020-10-16 12:26:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:41,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:41,654 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:41,654 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:41,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:41,658 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:41,659 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:41,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:41,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:41,660 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:41,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:41,871 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 51 times [2020-10-16 12:26:41,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:41,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669278587] [2020-10-16 12:26:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669278587] [2020-10-16 12:26:41,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030197670] [2020-10-16 12:26:41,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:41,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:41,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:42,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:42,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1239286448] [2020-10-16 12:26:42,116 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:42,117 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:42,119 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:42,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:42,127 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:42,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:42,150 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27266#(and (<= ~j~0 11) (< ~i~0 144))] [2020-10-16 12:26:42,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:42,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:42,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:42,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:42,151 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:42,462 INFO L93 Difference]: Finished difference Result 200 states and 479 transitions. [2020-10-16 12:26:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:42,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:42,464 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:42,465 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:42,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:42,469 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:42,470 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:42,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:42,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:42,471 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:42,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:42,677 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 52 times [2020-10-16 12:26:42,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:42,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760260806] [2020-10-16 12:26:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760260806] [2020-10-16 12:26:42,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205395237] [2020-10-16 12:26:42,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:42,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:42,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:42,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:42,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:42,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1714960345] [2020-10-16 12:26:42,913 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:42,914 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:42,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:42,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:42,922 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:42,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:42,944 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27814#(and (<= ~j~0 12) (< ~i~0 144))] [2020-10-16 12:26:42,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:42,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:42,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:42,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:42,946 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:43,266 INFO L93 Difference]: Finished difference Result 195 states and 466 transitions. [2020-10-16 12:26:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:43,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:43,269 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:43,269 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:43,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2020-10-16 12:26:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 332 transitions. [2020-10-16 12:26:43,273 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 332 transitions. Word has length 13 [2020-10-16 12:26:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 332 transitions. [2020-10-16 12:26:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 332 transitions. [2020-10-16 12:26:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:43,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:43,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:43,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-16 12:26:43,476 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:43,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 53 times [2020-10-16 12:26:43,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:43,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071048399] [2020-10-16 12:26:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071048399] [2020-10-16 12:26:43,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245339190] [2020-10-16 12:26:43,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:43,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:43,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:43,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:43,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:43,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:43,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [410421980] [2020-10-16 12:26:43,709 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:43,711 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:43,712 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:43,713 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:43,721 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:43,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:43,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:43,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:43,722 INFO L87 Difference]: Start difference. First operand 137 states and 332 transitions. Second operand 9 states. [2020-10-16 12:26:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:43,948 INFO L93 Difference]: Finished difference Result 193 states and 445 transitions. [2020-10-16 12:26:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:43,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:43,951 INFO L225 Difference]: With dead ends: 193 [2020-10-16 12:26:43,951 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:26:43,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:26:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 139. [2020-10-16 12:26:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 340 transitions. [2020-10-16 12:26:43,955 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 340 transitions. Word has length 13 [2020-10-16 12:26:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:43,955 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 340 transitions. [2020-10-16 12:26:43,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 340 transitions. [2020-10-16 12:26:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:43,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:43,956 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:44,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:44,161 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:44,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:44,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 54 times [2020-10-16 12:26:44,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565456948] [2020-10-16 12:26:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565456948] [2020-10-16 12:26:44,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158668236] [2020-10-16 12:26:44,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:44,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:44,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:44,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:44,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:44,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:44,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178918583] [2020-10-16 12:26:44,426 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:44,427 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:44,428 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:44,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:44,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:44,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:44,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:44,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:44,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:44,439 INFO L87 Difference]: Start difference. First operand 139 states and 340 transitions. Second operand 9 states. [2020-10-16 12:26:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:44,636 INFO L93 Difference]: Finished difference Result 195 states and 447 transitions. [2020-10-16 12:26:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:44,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:44,638 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:44,638 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 12:26:44,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 12:26:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 137. [2020-10-16 12:26:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-16 12:26:44,642 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-16 12:26:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:44,642 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-16 12:26:44,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-16 12:26:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:44,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:44,643 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:44,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-16 12:26:44,851 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 55 times [2020-10-16 12:26:44,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:44,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751866198] [2020-10-16 12:26:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751866198] [2020-10-16 12:26:44,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140180174] [2020-10-16 12:26:44,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:45,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:45,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [739003442] [2020-10-16 12:26:45,094 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:45,095 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:45,097 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:45,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:45,097 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:45,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:45,133 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29421#(and (<= (+ ~i~0 (* 2 ~j~0)) 13) (< ~i~0 144))] [2020-10-16 12:26:45,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:45,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:45,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:45,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:45,133 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:45,396 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-16 12:26:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:45,397 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:45,399 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:45,399 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:26:45,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:26:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 136. [2020-10-16 12:26:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:45,403 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:45,404 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:45,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:45,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:45,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:45,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:45,611 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 56 times [2020-10-16 12:26:45,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:45,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038769376] [2020-10-16 12:26:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038769376] [2020-10-16 12:26:45,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930378653] [2020-10-16 12:26:45,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:45,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:45,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:45,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:45,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:45,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:45,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [5638457] [2020-10-16 12:26:45,834 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:45,834 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:45,836 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:45,837 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:45,847 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:45,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:45,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:45,848 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 9 states. [2020-10-16 12:26:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:46,096 INFO L93 Difference]: Finished difference Result 200 states and 463 transitions. [2020-10-16 12:26:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:46,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:46,098 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:46,098 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:46,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 136. [2020-10-16 12:26:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:46,102 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:46,102 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:46,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:46,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:46,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:46,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-16 12:26:46,305 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 57 times [2020-10-16 12:26:46,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:46,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850405555] [2020-10-16 12:26:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850405555] [2020-10-16 12:26:46,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687589551] [2020-10-16 12:26:46,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:46,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:46,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:46,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:46,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:46,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:46,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1262098758] [2020-10-16 12:26:46,544 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:46,545 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:46,547 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:46,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:46,547 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,547 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:46,580 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:46,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [30505#(and (<= ~j~0 12) (< ~i~0 144)), 30506#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 12))] [2020-10-16 12:26:46,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:46,612 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 11 states. [2020-10-16 12:26:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:46,909 INFO L93 Difference]: Finished difference Result 203 states and 484 transitions. [2020-10-16 12:26:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:46,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:46,912 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:26:46,912 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:46,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2020-10-16 12:26:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 342 transitions. [2020-10-16 12:26:46,915 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 342 transitions. Word has length 13 [2020-10-16 12:26:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:46,916 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 342 transitions. [2020-10-16 12:26:46,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 342 transitions. [2020-10-16 12:26:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:46,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:46,916 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:47,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:47,117 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 58 times [2020-10-16 12:26:47,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:47,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551867136] [2020-10-16 12:26:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551867136] [2020-10-16 12:26:47,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445893546] [2020-10-16 12:26:47,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:47,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:47,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:47,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:47,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:47,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:47,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1709090308] [2020-10-16 12:26:47,342 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:47,343 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:47,345 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:47,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:47,354 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:47,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,377 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31055#(and (< ~i~0 144) (<= ~j~0 9))] [2020-10-16 12:26:47,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:47,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:47,378 INFO L87 Difference]: Start difference. First operand 138 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:47,666 INFO L93 Difference]: Finished difference Result 205 states and 489 transitions. [2020-10-16 12:26:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:47,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:47,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:47,668 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:47,668 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 12:26:47,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 12:26:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 138. [2020-10-16 12:26:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 342 transitions. [2020-10-16 12:26:47,672 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 342 transitions. Word has length 13 [2020-10-16 12:26:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:47,672 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 342 transitions. [2020-10-16 12:26:47,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 342 transitions. [2020-10-16 12:26:47,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:47,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:47,672 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:47,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-16 12:26:47,873 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1555609394, now seen corresponding path program 59 times [2020-10-16 12:26:47,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:47,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895444992] [2020-10-16 12:26:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895444992] [2020-10-16 12:26:47,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216303613] [2020-10-16 12:26:47,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:48,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:48,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:48,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:48,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:48,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:48,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646063562] [2020-10-16 12:26:48,126 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:48,128 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:48,129 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:48,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:48,138 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:48,139 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:48,162 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:48,163 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:48,206 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [31606#(and (<= ~j~0 11) (< ~i~0 144)), 31607#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 144)), 31608#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-16 12:26:48,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:48,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:48,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:48,207 INFO L87 Difference]: Start difference. First operand 138 states and 342 transitions. Second operand 12 states. [2020-10-16 12:26:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:48,506 INFO L93 Difference]: Finished difference Result 213 states and 504 transitions. [2020-10-16 12:26:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:48,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:48,508 INFO L225 Difference]: With dead ends: 213 [2020-10-16 12:26:48,508 INFO L226 Difference]: Without dead ends: 208 [2020-10-16 12:26:48,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-16 12:26:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 135. [2020-10-16 12:26:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 332 transitions. [2020-10-16 12:26:48,513 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 332 transitions. Word has length 13 [2020-10-16 12:26:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:48,513 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 332 transitions. [2020-10-16 12:26:48,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 332 transitions. [2020-10-16 12:26:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:48,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:48,514 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:48,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-16 12:26:48,725 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 60 times [2020-10-16 12:26:48,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:48,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183485613] [2020-10-16 12:26:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183485613] [2020-10-16 12:26:48,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452335897] [2020-10-16 12:26:48,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:48,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:48,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:48,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:48,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:48,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:48,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [725449516] [2020-10-16 12:26:48,952 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:48,953 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:48,955 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:48,955 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:48,966 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:48,967 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:48,995 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32161#(and (< ~i~0 144) (<= ~j~0 13))] [2020-10-16 12:26:48,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:48,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:48,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:48,997 INFO L87 Difference]: Start difference. First operand 135 states and 332 transitions. Second operand 10 states. [2020-10-16 12:26:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:49,323 INFO L93 Difference]: Finished difference Result 197 states and 464 transitions. [2020-10-16 12:26:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:49,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:49,326 INFO L225 Difference]: With dead ends: 197 [2020-10-16 12:26:49,326 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 12:26:49,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 12:26:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 133. [2020-10-16 12:26:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 322 transitions. [2020-10-16 12:26:49,330 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 322 transitions. Word has length 13 [2020-10-16 12:26:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:49,330 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 322 transitions. [2020-10-16 12:26:49,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 322 transitions. [2020-10-16 12:26:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:49,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:49,331 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:49,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:49,542 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:49,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:49,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1583314063, now seen corresponding path program 61 times [2020-10-16 12:26:49,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:49,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329856219] [2020-10-16 12:26:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329856219] [2020-10-16 12:26:49,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298921881] [2020-10-16 12:26:49,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:49,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:49,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:49,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1681904438] [2020-10-16 12:26:49,813 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:49,814 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:49,815 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:49,815 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:49,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:49,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:49,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:49,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:49,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:49,828 INFO L87 Difference]: Start difference. First operand 133 states and 322 transitions. Second operand 9 states. [2020-10-16 12:26:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:50,023 INFO L93 Difference]: Finished difference Result 199 states and 454 transitions. [2020-10-16 12:26:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:50,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:50,026 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:50,026 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:50,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 132. [2020-10-16 12:26:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:50,029 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:50,030 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:50,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:50,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:50,030 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:50,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:50,231 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:50,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1583977153, now seen corresponding path program 62 times [2020-10-16 12:26:50,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:50,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598869178] [2020-10-16 12:26:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598869178] [2020-10-16 12:26:50,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880892161] [2020-10-16 12:26:50,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:50,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:50,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:50,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:50,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:50,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:50,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1045645803] [2020-10-16 12:26:50,483 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:50,484 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:50,486 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:50,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:50,503 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:50,504 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:50,529 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33220#(and (<= ~j~0 10) (< ~i~0 144))] [2020-10-16 12:26:50,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:50,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:50,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:50,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:50,530 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 10 states. [2020-10-16 12:26:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:50,799 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-16 12:26:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:50,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:50,801 INFO L225 Difference]: With dead ends: 209 [2020-10-16 12:26:50,801 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 12:26:50,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 12:26:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 130. [2020-10-16 12:26:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 12:26:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-16 12:26:50,804 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-16 12:26:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:50,805 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-16 12:26:50,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-16 12:26:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:50,805 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:51,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:51,015 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-16 12:26:51,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:51,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163443786] [2020-10-16 12:26:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163443786] [2020-10-16 12:26:51,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638080089] [2020-10-16 12:26:51,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:51,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:51,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:51,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:51,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:26:51,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-16 12:26:51,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006528844] [2020-10-16 12:26:51,224 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:51,225 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:51,227 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:51,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:51,348 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:51,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:51,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:51,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:51,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:51,349 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 8 states. [2020-10-16 12:26:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:51,379 INFO L93 Difference]: Finished difference Result 195 states and 513 transitions. [2020-10-16 12:26:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:51,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-16 12:26:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:51,381 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:51,382 INFO L226 Difference]: Without dead ends: 188 [2020-10-16 12:26:51,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-16 12:26:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-16 12:26:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-16 12:26:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 500 transitions. [2020-10-16 12:26:51,385 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 500 transitions. Word has length 13 [2020-10-16 12:26:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:51,385 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 500 transitions. [2020-10-16 12:26:51,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 500 transitions. [2020-10-16 12:26:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:51,386 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:51,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:51,586 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:51,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 6 times [2020-10-16 12:26:51,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:51,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356240030] [2020-10-16 12:26:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356240030] [2020-10-16 12:26:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218802009] [2020-10-16 12:26:51,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:51,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:51,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:51,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:51,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:51,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [82197026] [2020-10-16 12:26:51,921 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:51,922 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:51,924 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:51,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:51,925 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:51,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,952 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,953 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,997 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,031 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,031 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,073 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,111 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,111 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,145 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [34382#(and (<= ~j~0 7) (< ~i~0 144)), 34383#(and (= ~i~0 1) (<= ~j~0 (+ (* 5 ~i~0) 1))), 34384#(and (= ~i~0 1) (<= ~j~0 (+ (* 4 ~i~0) 1))), 34385#(and (<= ~j~0 (+ (* 3 ~i~0) 1)) (= ~i~0 1)), 34386#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 34387#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:52,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:26:52,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:26:52,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:52,147 INFO L87 Difference]: Start difference. First operand 188 states and 500 transitions. Second operand 16 states. [2020-10-16 12:26:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:52,256 INFO L93 Difference]: Finished difference Result 268 states and 685 transitions. [2020-10-16 12:26:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:52,257 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-16 12:26:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:52,259 INFO L225 Difference]: With dead ends: 268 [2020-10-16 12:26:52,259 INFO L226 Difference]: Without dead ends: 257 [2020-10-16 12:26:52,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-16 12:26:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 194. [2020-10-16 12:26:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-16 12:26:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 517 transitions. [2020-10-16 12:26:52,265 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 517 transitions. Word has length 13 [2020-10-16 12:26:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:52,265 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 517 transitions. [2020-10-16 12:26:52,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:26:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 517 transitions. [2020-10-16 12:26:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:52,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:52,266 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:52,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2020-10-16 12:26:52,467 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 63 times [2020-10-16 12:26:52,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:52,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430863254] [2020-10-16 12:26:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430863254] [2020-10-16 12:26:52,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140878726] [2020-10-16 12:26:52,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:52,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:52,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:52,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:52,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:52,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1714990874] [2020-10-16 12:26:52,874 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:52,876 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:52,880 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-10-16 12:26:52,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:52,911 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,918 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,919 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,930 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:52,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:52,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:52,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:52,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:52,931 INFO L87 Difference]: Start difference. First operand 194 states and 517 transitions. Second operand 10 states. [2020-10-16 12:26:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:53,003 INFO L93 Difference]: Finished difference Result 230 states and 585 transitions. [2020-10-16 12:26:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:53,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:53,006 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:26:53,006 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:26:53,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:26:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 204. [2020-10-16 12:26:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:26:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 545 transitions. [2020-10-16 12:26:53,014 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 545 transitions. Word has length 14 [2020-10-16 12:26:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:53,014 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 545 transitions. [2020-10-16 12:26:53,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 545 transitions. [2020-10-16 12:26:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:53,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:53,016 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:53,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:53,231 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 64 times [2020-10-16 12:26:53,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:53,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189384549] [2020-10-16 12:26:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189384549] [2020-10-16 12:26:53,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662643018] [2020-10-16 12:26:53,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:53,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:53,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:53,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:53,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:53,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:53,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1927960281] [2020-10-16 12:26:53,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:53,589 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:53,592 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:53,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:53,607 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:53,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:53,612 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:53,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:53,620 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:53,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:53,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:53,621 INFO L87 Difference]: Start difference. First operand 204 states and 545 transitions. Second operand 10 states. [2020-10-16 12:26:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:53,703 INFO L93 Difference]: Finished difference Result 245 states and 621 transitions. [2020-10-16 12:26:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:53,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:53,706 INFO L225 Difference]: With dead ends: 245 [2020-10-16 12:26:53,706 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:26:53,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:26:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 204. [2020-10-16 12:26:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:26:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 545 transitions. [2020-10-16 12:26:53,711 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 545 transitions. Word has length 14 [2020-10-16 12:26:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:53,711 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 545 transitions. [2020-10-16 12:26:53,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 545 transitions. [2020-10-16 12:26:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:53,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:53,712 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:53,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-16 12:26:53,912 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:53,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 65 times [2020-10-16 12:26:53,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:53,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380224213] [2020-10-16 12:26:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380224213] [2020-10-16 12:26:54,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703580466] [2020-10-16 12:26:54,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:54,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:54,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:54,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:54,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:54,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:54,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [18819382] [2020-10-16 12:26:54,249 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:54,250 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:54,252 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:54,252 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:54,262 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,262 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,274 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,274 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,281 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:54,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:54,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:54,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:54,282 INFO L87 Difference]: Start difference. First operand 204 states and 545 transitions. Second operand 10 states. [2020-10-16 12:26:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:54,389 INFO L93 Difference]: Finished difference Result 249 states and 631 transitions. [2020-10-16 12:26:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:54,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:54,392 INFO L225 Difference]: With dead ends: 249 [2020-10-16 12:26:54,392 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 12:26:54,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 12:26:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 205. [2020-10-16 12:26:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:26:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 548 transitions. [2020-10-16 12:26:54,396 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 548 transitions. Word has length 14 [2020-10-16 12:26:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:54,396 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 548 transitions. [2020-10-16 12:26:54,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 548 transitions. [2020-10-16 12:26:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:54,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:54,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:54,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:54,597 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:54,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2094088396, now seen corresponding path program 66 times [2020-10-16 12:26:54,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:54,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591907964] [2020-10-16 12:26:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591907964] [2020-10-16 12:26:54,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240657646] [2020-10-16 12:26:54,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:54,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:54,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:54,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:54,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:54,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:54,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [480415271] [2020-10-16 12:26:54,903 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:54,905 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:54,908 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:54,908 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:54,915 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,915 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,927 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,927 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,935 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:54,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:54,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:54,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:54,936 INFO L87 Difference]: Start difference. First operand 205 states and 548 transitions. Second operand 10 states. [2020-10-16 12:26:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:55,047 INFO L93 Difference]: Finished difference Result 256 states and 651 transitions. [2020-10-16 12:26:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:55,048 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:55,049 INFO L225 Difference]: With dead ends: 256 [2020-10-16 12:26:55,049 INFO L226 Difference]: Without dead ends: 252 [2020-10-16 12:26:55,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-16 12:26:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 204. [2020-10-16 12:26:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:26:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 545 transitions. [2020-10-16 12:26:55,054 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 545 transitions. Word has length 14 [2020-10-16 12:26:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:55,054 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 545 transitions. [2020-10-16 12:26:55,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 545 transitions. [2020-10-16 12:26:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:55,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:55,055 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:55,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 12:26:55,256 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:55,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 67 times [2020-10-16 12:26:55,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:55,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187200741] [2020-10-16 12:26:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187200741] [2020-10-16 12:26:55,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706414066] [2020-10-16 12:26:55,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:55,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:55,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:55,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1701718825] [2020-10-16 12:26:55,623 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:55,624 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:55,627 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:55,627 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:55,632 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,647 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,647 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,653 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:55,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:55,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:55,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:55,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:55,654 INFO L87 Difference]: Start difference. First operand 204 states and 545 transitions. Second operand 10 states. [2020-10-16 12:26:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:55,797 INFO L93 Difference]: Finished difference Result 250 states and 634 transitions. [2020-10-16 12:26:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:55,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:55,799 INFO L225 Difference]: With dead ends: 250 [2020-10-16 12:26:55,799 INFO L226 Difference]: Without dead ends: 247 [2020-10-16 12:26:55,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-16 12:26:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 206. [2020-10-16 12:26:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-16 12:26:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 551 transitions. [2020-10-16 12:26:55,806 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 551 transitions. Word has length 14 [2020-10-16 12:26:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:55,806 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 551 transitions. [2020-10-16 12:26:55,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 551 transitions. [2020-10-16 12:26:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:55,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:55,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:56,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:56,009 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 68 times [2020-10-16 12:26:56,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:56,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479247274] [2020-10-16 12:26:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:56,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479247274] [2020-10-16 12:26:56,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057897439] [2020-10-16 12:26:56,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:56,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:56,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:56,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:56,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:58,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:58,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:58,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [963957205] [2020-10-16 12:26:58,981 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:58,982 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:58,984 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:58,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:58,989 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:58,989 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,003 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:59,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,039 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:59,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:59,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:59,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:59,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-16 12:26:59,040 INFO L87 Difference]: Start difference. First operand 206 states and 551 transitions. Second operand 10 states. [2020-10-16 12:26:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:59,190 INFO L93 Difference]: Finished difference Result 259 states and 658 transitions. [2020-10-16 12:26:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:59,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:59,192 INFO L225 Difference]: With dead ends: 259 [2020-10-16 12:26:59,192 INFO L226 Difference]: Without dead ends: 255 [2020-10-16 12:26:59,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=126, Invalid=253, Unknown=1, NotChecked=0, Total=380 [2020-10-16 12:26:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-16 12:26:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-10-16 12:26:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:26:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 548 transitions. [2020-10-16 12:26:59,197 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 548 transitions. Word has length 14 [2020-10-16 12:26:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:59,197 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 548 transitions. [2020-10-16 12:26:59,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 548 transitions. [2020-10-16 12:26:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:59,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:59,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:59,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:59,398 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 69 times [2020-10-16 12:26:59,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:59,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883109207] [2020-10-16 12:26:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883109207] [2020-10-16 12:26:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485890983] [2020-10-16 12:26:59,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:59,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:59,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:59,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:59,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:00,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:00,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:00,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1633578311] [2020-10-16 12:27:00,191 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:00,192 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:00,194 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:27:00,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:00,197 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,197 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,211 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,211 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,219 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:00,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:00,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:00,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:00,220 INFO L87 Difference]: Start difference. First operand 205 states and 548 transitions. Second operand 10 states. [2020-10-16 12:27:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:00,368 INFO L93 Difference]: Finished difference Result 258 states and 658 transitions. [2020-10-16 12:27:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:00,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:00,370 INFO L225 Difference]: With dead ends: 258 [2020-10-16 12:27:00,370 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 12:27:00,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 12:27:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 206. [2020-10-16 12:27:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-16 12:27:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 551 transitions. [2020-10-16 12:27:00,375 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 551 transitions. Word has length 14 [2020-10-16 12:27:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:00,375 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 551 transitions. [2020-10-16 12:27:00,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 551 transitions. [2020-10-16 12:27:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:00,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:00,378 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:00,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:00,579 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2095011917, now seen corresponding path program 70 times [2020-10-16 12:27:00,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:00,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399603310] [2020-10-16 12:27:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:00,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399603310] [2020-10-16 12:27:00,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499460414] [2020-10-16 12:27:00,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:00,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:00,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:00,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:00,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:00,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:00,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [285463346] [2020-10-16 12:27:00,907 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:00,908 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:00,910 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:27:00,910 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:00,913 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,913 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,934 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,944 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:00,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:00,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:00,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:00,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:00,945 INFO L87 Difference]: Start difference. First operand 206 states and 551 transitions. Second operand 10 states. [2020-10-16 12:27:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:01,090 INFO L93 Difference]: Finished difference Result 263 states and 671 transitions. [2020-10-16 12:27:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:01,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:01,092 INFO L225 Difference]: With dead ends: 263 [2020-10-16 12:27:01,092 INFO L226 Difference]: Without dead ends: 258 [2020-10-16 12:27:01,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-16 12:27:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 204. [2020-10-16 12:27:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:27:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 545 transitions. [2020-10-16 12:27:01,097 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 545 transitions. Word has length 14 [2020-10-16 12:27:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:01,098 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 545 transitions. [2020-10-16 12:27:01,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 545 transitions. [2020-10-16 12:27:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:01,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:01,098 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:01,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,299 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 71 times [2020-10-16 12:27:01,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:01,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702975956] [2020-10-16 12:27:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:01,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702975956] [2020-10-16 12:27:01,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215567143] [2020-10-16 12:27:01,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:01,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:01,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:01,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:01,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:01,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:01,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [56301297] [2020-10-16 12:27:01,608 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:01,610 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:01,612 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:01,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:01,615 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:01,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:01,629 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:01,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:01,634 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:01,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:01,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:01,635 INFO L87 Difference]: Start difference. First operand 204 states and 545 transitions. Second operand 10 states. [2020-10-16 12:27:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:01,805 INFO L93 Difference]: Finished difference Result 249 states and 631 transitions. [2020-10-16 12:27:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:01,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:01,807 INFO L225 Difference]: With dead ends: 249 [2020-10-16 12:27:01,807 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 12:27:01,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 12:27:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 207. [2020-10-16 12:27:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:27:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 554 transitions. [2020-10-16 12:27:01,812 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 554 transitions. Word has length 14 [2020-10-16 12:27:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:01,812 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 554 transitions. [2020-10-16 12:27:01,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 554 transitions. [2020-10-16 12:27:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:01,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:01,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:02,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:02,017 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 72 times [2020-10-16 12:27:02,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:02,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185090801] [2020-10-16 12:27:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185090801] [2020-10-16 12:27:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414134207] [2020-10-16 12:27:02,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:02,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:27:02,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:02,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:02,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:02,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:02,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [149985305] [2020-10-16 12:27:02,340 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,342 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,345 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:02,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,348 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,367 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,368 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,375 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:02,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:02,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:02,376 INFO L87 Difference]: Start difference. First operand 207 states and 554 transitions. Second operand 10 states. [2020-10-16 12:27:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,543 INFO L93 Difference]: Finished difference Result 262 states and 665 transitions. [2020-10-16 12:27:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:02,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,546 INFO L225 Difference]: With dead ends: 262 [2020-10-16 12:27:02,546 INFO L226 Difference]: Without dead ends: 258 [2020-10-16 12:27:02,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-16 12:27:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 206. [2020-10-16 12:27:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-16 12:27:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 551 transitions. [2020-10-16 12:27:02,550 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 551 transitions. Word has length 14 [2020-10-16 12:27:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,551 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 551 transitions. [2020-10-16 12:27:02,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 551 transitions. [2020-10-16 12:27:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:02,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:02,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:02,753 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 73 times [2020-10-16 12:27:02,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:02,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466361401] [2020-10-16 12:27:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466361401] [2020-10-16 12:27:02,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966084024] [2020-10-16 12:27:02,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:02,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:03,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [126556667] [2020-10-16 12:27:03,026 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,027 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,029 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:03,030 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,031 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,032 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,045 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,049 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:03,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:03,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:03,050 INFO L87 Difference]: Start difference. First operand 206 states and 551 transitions. Second operand 10 states. [2020-10-16 12:27:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,207 INFO L93 Difference]: Finished difference Result 259 states and 659 transitions. [2020-10-16 12:27:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:03,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,209 INFO L225 Difference]: With dead ends: 259 [2020-10-16 12:27:03,209 INFO L226 Difference]: Without dead ends: 255 [2020-10-16 12:27:03,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-16 12:27:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 207. [2020-10-16 12:27:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:27:03,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 554 transitions. [2020-10-16 12:27:03,214 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 554 transitions. Word has length 14 [2020-10-16 12:27:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,215 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 554 transitions. [2020-10-16 12:27:03,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 554 transitions. [2020-10-16 12:27:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:03,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,215 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,416 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2122717547, now seen corresponding path program 74 times [2020-10-16 12:27:03,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664796167] [2020-10-16 12:27:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664796167] [2020-10-16 12:27:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106718558] [2020-10-16 12:27:03,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:03,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:03,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:03,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:03,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [802921518] [2020-10-16 12:27:03,710 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,711 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,713 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:03,713 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,715 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,728 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,728 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,734 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:03,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:03,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:03,735 INFO L87 Difference]: Start difference. First operand 207 states and 554 transitions. Second operand 10 states. [2020-10-16 12:27:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,902 INFO L93 Difference]: Finished difference Result 267 states and 679 transitions. [2020-10-16 12:27:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:03,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,905 INFO L225 Difference]: With dead ends: 267 [2020-10-16 12:27:03,905 INFO L226 Difference]: Without dead ends: 262 [2020-10-16 12:27:03,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-16 12:27:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 205. [2020-10-16 12:27:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:27:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 548 transitions. [2020-10-16 12:27:03,909 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 548 transitions. Word has length 14 [2020-10-16 12:27:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,910 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 548 transitions. [2020-10-16 12:27:03,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 548 transitions. [2020-10-16 12:27:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:03,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 12:27:04,111 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2123610316, now seen corresponding path program 75 times [2020-10-16 12:27:04,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665463741] [2020-10-16 12:27:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665463741] [2020-10-16 12:27:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612403316] [2020-10-16 12:27:04,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:04,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:04,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:04,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1176401045] [2020-10-16 12:27:04,441 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,442 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,444 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:04,444 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,459 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,460 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,474 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:04,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:04,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:04,475 INFO L87 Difference]: Start difference. First operand 205 states and 548 transitions. Second operand 10 states. [2020-10-16 12:27:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:04,666 INFO L93 Difference]: Finished difference Result 260 states and 662 transitions. [2020-10-16 12:27:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:04,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:04,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:04,669 INFO L225 Difference]: With dead ends: 260 [2020-10-16 12:27:04,669 INFO L226 Difference]: Without dead ends: 256 [2020-10-16 12:27:04,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-16 12:27:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 207. [2020-10-16 12:27:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:27:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 554 transitions. [2020-10-16 12:27:04,673 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 554 transitions. Word has length 14 [2020-10-16 12:27:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:04,674 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 554 transitions. [2020-10-16 12:27:04,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 554 transitions. [2020-10-16 12:27:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:04,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:04,675 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:04,875 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2123611277, now seen corresponding path program 76 times [2020-10-16 12:27:04,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155021942] [2020-10-16 12:27:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155021942] [2020-10-16 12:27:04,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392156814] [2020-10-16 12:27:04,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:05,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:05,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049448396] [2020-10-16 12:27:05,206 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,208 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,209 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:05,210 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,212 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,232 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,232 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,241 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:05,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:05,242 INFO L87 Difference]: Start difference. First operand 207 states and 554 transitions. Second operand 10 states. [2020-10-16 12:27:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,417 INFO L93 Difference]: Finished difference Result 267 states and 680 transitions. [2020-10-16 12:27:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:05,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,420 INFO L225 Difference]: With dead ends: 267 [2020-10-16 12:27:05,420 INFO L226 Difference]: Without dead ends: 262 [2020-10-16 12:27:05,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-16 12:27:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 206. [2020-10-16 12:27:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-16 12:27:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 551 transitions. [2020-10-16 12:27:05,425 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 551 transitions. Word has length 14 [2020-10-16 12:27:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,426 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 551 transitions. [2020-10-16 12:27:05,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 551 transitions. [2020-10-16 12:27:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:05,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,427 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:05,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 12:27:05,627 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:05,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2123640107, now seen corresponding path program 77 times [2020-10-16 12:27:05,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:05,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686908947] [2020-10-16 12:27:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686908947] [2020-10-16 12:27:05,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677598380] [2020-10-16 12:27:05,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:05,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:05,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1059042743] [2020-10-16 12:27:05,944 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,946 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,948 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:05,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,951 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,970 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:05,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:05,971 INFO L87 Difference]: Start difference. First operand 206 states and 551 transitions. Second operand 10 states. [2020-10-16 12:27:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,137 INFO L93 Difference]: Finished difference Result 262 states and 671 transitions. [2020-10-16 12:27:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:06,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,140 INFO L225 Difference]: With dead ends: 262 [2020-10-16 12:27:06,140 INFO L226 Difference]: Without dead ends: 257 [2020-10-16 12:27:06,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-16 12:27:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 207. [2020-10-16 12:27:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:27:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 554 transitions. [2020-10-16 12:27:06,145 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 554 transitions. Word has length 14 [2020-10-16 12:27:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,145 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 554 transitions. [2020-10-16 12:27:06,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 554 transitions. [2020-10-16 12:27:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:06,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,146 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,351 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 78 times [2020-10-16 12:27:06,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140416901] [2020-10-16 12:27:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140416901] [2020-10-16 12:27:06,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621635401] [2020-10-16 12:27:06,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:06,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:06,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:06,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:06,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:06,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:06,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [83773943] [2020-10-16 12:27:06,656 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:06,657 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:06,659 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:06,659 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:06,660 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,661 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,674 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,674 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,683 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:06,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:06,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:06,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:06,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:06,684 INFO L87 Difference]: Start difference. First operand 207 states and 554 transitions. Second operand 10 states. [2020-10-16 12:27:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,859 INFO L93 Difference]: Finished difference Result 264 states and 677 transitions. [2020-10-16 12:27:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:06,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:06,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,862 INFO L225 Difference]: With dead ends: 264 [2020-10-16 12:27:06,862 INFO L226 Difference]: Without dead ends: 258 [2020-10-16 12:27:06,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-16 12:27:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 205. [2020-10-16 12:27:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:27:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 546 transitions. [2020-10-16 12:27:06,866 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 546 transitions. Word has length 14 [2020-10-16 12:27:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,866 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 546 transitions. [2020-10-16 12:27:06,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 546 transitions. [2020-10-16 12:27:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:06,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,867 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:07,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,068 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 79 times [2020-10-16 12:27:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521932331] [2020-10-16 12:27:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521932331] [2020-10-16 12:27:07,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838747323] [2020-10-16 12:27:07,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:07,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1818071702] [2020-10-16 12:27:07,364 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,365 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,367 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:07,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,380 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,414 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,414 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,437 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,437 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,441 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,441 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,447 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46774#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:07,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:07,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:07,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:07,449 INFO L87 Difference]: Start difference. First operand 205 states and 546 transitions. Second operand 11 states. [2020-10-16 12:27:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:07,627 INFO L93 Difference]: Finished difference Result 251 states and 637 transitions. [2020-10-16 12:27:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:07,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:07,630 INFO L225 Difference]: With dead ends: 251 [2020-10-16 12:27:07,630 INFO L226 Difference]: Without dead ends: 248 [2020-10-16 12:27:07,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-16 12:27:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 208. [2020-10-16 12:27:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-16 12:27:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 555 transitions. [2020-10-16 12:27:07,634 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 555 transitions. Word has length 14 [2020-10-16 12:27:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:07,634 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 555 transitions. [2020-10-16 12:27:07,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 555 transitions. [2020-10-16 12:27:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:07,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:07,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:07,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,836 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 80 times [2020-10-16 12:27:07,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:07,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862584584] [2020-10-16 12:27:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862584584] [2020-10-16 12:27:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203619633] [2020-10-16 12:27:07,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:07,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:08,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1254076656] [2020-10-16 12:27:08,152 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:08,153 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:08,155 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:08,155 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:08,164 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,165 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,199 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,200 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,222 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,222 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,228 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,234 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47506#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:08,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:08,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:08,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:08,235 INFO L87 Difference]: Start difference. First operand 208 states and 555 transitions. Second operand 11 states. [2020-10-16 12:27:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:08,423 INFO L93 Difference]: Finished difference Result 263 states and 670 transitions. [2020-10-16 12:27:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:08,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:08,426 INFO L225 Difference]: With dead ends: 263 [2020-10-16 12:27:08,426 INFO L226 Difference]: Without dead ends: 259 [2020-10-16 12:27:08,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-16 12:27:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 207. [2020-10-16 12:27:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:27:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 552 transitions. [2020-10-16 12:27:08,430 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 552 transitions. Word has length 14 [2020-10-16 12:27:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:08,430 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 552 transitions. [2020-10-16 12:27:08,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 552 transitions. [2020-10-16 12:27:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:08,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:08,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:08,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:08,632 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:08,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 81 times [2020-10-16 12:27:08,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:08,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032819686] [2020-10-16 12:27:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032819686] [2020-10-16 12:27:08,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864488785] [2020-10-16 12:27:08,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:08,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:08,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:08,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:09,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:09,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:09,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [958865077] [2020-10-16 12:27:09,435 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:09,436 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:09,438 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:09,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:09,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,482 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,483 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,505 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,505 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,508 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,509 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,515 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48248#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:09,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:09,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:09,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:09,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:09,516 INFO L87 Difference]: Start difference. First operand 207 states and 552 transitions. Second operand 11 states. [2020-10-16 12:27:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,697 INFO L93 Difference]: Finished difference Result 264 states and 672 transitions. [2020-10-16 12:27:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:09,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,700 INFO L225 Difference]: With dead ends: 264 [2020-10-16 12:27:09,700 INFO L226 Difference]: Without dead ends: 259 [2020-10-16 12:27:09,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-16 12:27:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 212. [2020-10-16 12:27:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:27:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 566 transitions. [2020-10-16 12:27:09,705 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 566 transitions. Word has length 14 [2020-10-16 12:27:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,705 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 566 transitions. [2020-10-16 12:27:09,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 566 transitions. [2020-10-16 12:27:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:09,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,706 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:09,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:09,907 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1313375219, now seen corresponding path program 82 times [2020-10-16 12:27:09,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:09,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507465325] [2020-10-16 12:27:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507465325] [2020-10-16 12:27:10,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400191551] [2020-10-16 12:27:10,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:10,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:10,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:10,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:10,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [400704985] [2020-10-16 12:27:10,248 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:10,249 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:10,251 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:10,251 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:10,261 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,261 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,310 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,333 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,344 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,345 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,354 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49001#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:10,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:10,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:10,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:10,355 INFO L87 Difference]: Start difference. First operand 212 states and 566 transitions. Second operand 11 states. [2020-10-16 12:27:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:10,552 INFO L93 Difference]: Finished difference Result 272 states and 694 transitions. [2020-10-16 12:27:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:10,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:10,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:10,555 INFO L225 Difference]: With dead ends: 272 [2020-10-16 12:27:10,556 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 12:27:10,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 12:27:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 209. [2020-10-16 12:27:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-16 12:27:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 557 transitions. [2020-10-16 12:27:10,559 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 557 transitions. Word has length 14 [2020-10-16 12:27:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:10,560 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 557 transitions. [2020-10-16 12:27:10,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 557 transitions. [2020-10-16 12:27:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:10,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:10,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:10,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:10,761 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1312482450, now seen corresponding path program 83 times [2020-10-16 12:27:10,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:10,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143234970] [2020-10-16 12:27:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143234970] [2020-10-16 12:27:10,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932677251] [2020-10-16 12:27:10,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:10,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:10,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:11,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [947187686] [2020-10-16 12:27:11,068 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,069 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,072 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:11,072 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,082 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,115 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,116 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,146 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,146 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,153 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,159 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49756#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:11,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:11,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:11,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:11,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:11,160 INFO L87 Difference]: Start difference. First operand 209 states and 557 transitions. Second operand 11 states. [2020-10-16 12:27:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:11,355 INFO L93 Difference]: Finished difference Result 264 states and 670 transitions. [2020-10-16 12:27:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:11,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:11,357 INFO L225 Difference]: With dead ends: 264 [2020-10-16 12:27:11,358 INFO L226 Difference]: Without dead ends: 259 [2020-10-16 12:27:11,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:27:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-16 12:27:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 214. [2020-10-16 12:27:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 12:27:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 571 transitions. [2020-10-16 12:27:11,363 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 571 transitions. Word has length 14 [2020-10-16 12:27:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:11,364 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 571 transitions. [2020-10-16 12:27:11,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 571 transitions. [2020-10-16 12:27:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:11,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:11,365 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:11,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-10-16 12:27:11,567 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 84 times [2020-10-16 12:27:11,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:11,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026723688] [2020-10-16 12:27:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026723688] [2020-10-16 12:27:11,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480187183] [2020-10-16 12:27:11,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:11,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:11,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:11,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:11,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:11,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [484184010] [2020-10-16 12:27:11,888 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,889 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:11,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,902 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,902 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,935 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,936 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,954 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,955 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,961 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,961 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,968 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50515#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:11,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:11,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:11,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:11,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:11,969 INFO L87 Difference]: Start difference. First operand 214 states and 571 transitions. Second operand 11 states. [2020-10-16 12:27:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:12,153 INFO L93 Difference]: Finished difference Result 267 states and 682 transitions. [2020-10-16 12:27:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:12,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:12,157 INFO L225 Difference]: With dead ends: 267 [2020-10-16 12:27:12,157 INFO L226 Difference]: Without dead ends: 261 [2020-10-16 12:27:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-16 12:27:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 212. [2020-10-16 12:27:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:27:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 565 transitions. [2020-10-16 12:27:12,162 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 565 transitions. Word has length 14 [2020-10-16 12:27:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:12,163 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 565 transitions. [2020-10-16 12:27:12,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 565 transitions. [2020-10-16 12:27:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:12,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:12,164 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:12,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:12,368 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1312452659, now seen corresponding path program 85 times [2020-10-16 12:27:12,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:12,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101407775] [2020-10-16 12:27:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101407775] [2020-10-16 12:27:12,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85528316] [2020-10-16 12:27:12,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:12,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:12,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:12,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1390421496] [2020-10-16 12:27:12,761 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:12,763 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:12,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:12,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:12,787 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,788 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,838 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,864 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,876 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,888 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51271#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:12,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:12,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:12,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:12,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:12,889 INFO L87 Difference]: Start difference. First operand 212 states and 565 transitions. Second operand 11 states. [2020-10-16 12:27:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:13,145 INFO L93 Difference]: Finished difference Result 267 states and 680 transitions. [2020-10-16 12:27:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:13,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:13,148 INFO L225 Difference]: With dead ends: 267 [2020-10-16 12:27:13,148 INFO L226 Difference]: Without dead ends: 261 [2020-10-16 12:27:13,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-16 12:27:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 215. [2020-10-16 12:27:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:27:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 573 transitions. [2020-10-16 12:27:13,154 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 573 transitions. Word has length 14 [2020-10-16 12:27:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:13,154 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 573 transitions. [2020-10-16 12:27:13,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 573 transitions. [2020-10-16 12:27:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:13,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:13,155 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:13,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2020-10-16 12:27:13,368 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1312451698, now seen corresponding path program 86 times [2020-10-16 12:27:13,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:13,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768872245] [2020-10-16 12:27:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:13,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768872245] [2020-10-16 12:27:13,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103829215] [2020-10-16 12:27:13,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:13,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:13,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:13,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:13,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:13,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:13,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [139137691] [2020-10-16 12:27:13,692 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:13,694 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:13,696 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:13,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:13,706 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,706 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,739 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,764 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,764 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,769 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,769 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,776 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52033#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:13,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:13,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:13,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:13,777 INFO L87 Difference]: Start difference. First operand 215 states and 573 transitions. Second operand 11 states. [2020-10-16 12:27:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:13,956 INFO L93 Difference]: Finished difference Result 269 states and 684 transitions. [2020-10-16 12:27:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:13,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:13,959 INFO L225 Difference]: With dead ends: 269 [2020-10-16 12:27:13,959 INFO L226 Difference]: Without dead ends: 263 [2020-10-16 12:27:13,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-16 12:27:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 212. [2020-10-16 12:27:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:27:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 564 transitions. [2020-10-16 12:27:13,965 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 564 transitions. Word has length 14 [2020-10-16 12:27:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:13,966 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 564 transitions. [2020-10-16 12:27:13,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 564 transitions. [2020-10-16 12:27:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:13,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:13,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:14,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:14,168 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 87 times [2020-10-16 12:27:14,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:14,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079439130] [2020-10-16 12:27:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:14,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079439130] [2020-10-16 12:27:14,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134864554] [2020-10-16 12:27:14,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:14,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:14,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:14,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:14,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:14,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:14,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [252402031] [2020-10-16 12:27:14,499 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:14,500 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:14,502 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:14,502 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:14,514 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,551 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,552 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,588 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,588 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,614 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,617 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,621 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,628 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [52791#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 52792#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:14,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:14,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:14,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:14,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:14,629 INFO L87 Difference]: Start difference. First operand 212 states and 564 transitions. Second operand 12 states. [2020-10-16 12:27:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:14,800 INFO L93 Difference]: Finished difference Result 274 states and 696 transitions. [2020-10-16 12:27:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:14,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:14,802 INFO L225 Difference]: With dead ends: 274 [2020-10-16 12:27:14,802 INFO L226 Difference]: Without dead ends: 269 [2020-10-16 12:27:14,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-16 12:27:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 217. [2020-10-16 12:27:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 578 transitions. [2020-10-16 12:27:14,806 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 578 transitions. Word has length 14 [2020-10-16 12:27:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:14,807 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 578 transitions. [2020-10-16 12:27:14,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 578 transitions. [2020-10-16 12:27:14,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:14,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:14,807 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:15,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:15,008 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1284775859, now seen corresponding path program 88 times [2020-10-16 12:27:15,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:15,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186537384] [2020-10-16 12:27:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:15,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186537384] [2020-10-16 12:27:15,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351885011] [2020-10-16 12:27:15,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:15,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:15,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:15,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:16,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:16,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:16,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1316845173] [2020-10-16 12:27:16,407 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:16,408 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:16,411 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:16,411 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:16,412 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,470 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,506 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,532 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,536 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,536 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,547 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,547 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,559 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [53563#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 53564#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:16,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:16,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:16,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:16,560 INFO L87 Difference]: Start difference. First operand 217 states and 578 transitions. Second operand 12 states. [2020-10-16 12:27:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:16,742 INFO L93 Difference]: Finished difference Result 281 states and 716 transitions. [2020-10-16 12:27:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:16,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:16,745 INFO L225 Difference]: With dead ends: 281 [2020-10-16 12:27:16,745 INFO L226 Difference]: Without dead ends: 275 [2020-10-16 12:27:16,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-16 12:27:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 214. [2020-10-16 12:27:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 12:27:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 569 transitions. [2020-10-16 12:27:16,750 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 569 transitions. Word has length 14 [2020-10-16 12:27:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:16,750 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 569 transitions. [2020-10-16 12:27:16,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 569 transitions. [2020-10-16 12:27:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:16,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:16,751 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 12:27:16,952 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 89 times [2020-10-16 12:27:16,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274558699] [2020-10-16 12:27:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274558699] [2020-10-16 12:27:17,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981189064] [2020-10-16 12:27:17,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:17,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:17,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:17,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:17,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:17,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:17,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2056592531] [2020-10-16 12:27:17,306 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:17,307 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:17,310 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:27:17,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:17,331 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:17,331 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,344 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:17,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:17,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:17,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:17,345 INFO L87 Difference]: Start difference. First operand 214 states and 569 transitions. Second operand 10 states. [2020-10-16 12:27:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:17,403 INFO L93 Difference]: Finished difference Result 263 states and 657 transitions. [2020-10-16 12:27:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:17,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:17,405 INFO L225 Difference]: With dead ends: 263 [2020-10-16 12:27:17,405 INFO L226 Difference]: Without dead ends: 261 [2020-10-16 12:27:17,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-16 12:27:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 221. [2020-10-16 12:27:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:27:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 590 transitions. [2020-10-16 12:27:17,411 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 590 transitions. Word has length 14 [2020-10-16 12:27:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:17,411 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 590 transitions. [2020-10-16 12:27:17,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 590 transitions. [2020-10-16 12:27:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:17,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:17,412 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:17,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 12:27:17,615 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:17,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 90 times [2020-10-16 12:27:17,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:17,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334575164] [2020-10-16 12:27:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334575164] [2020-10-16 12:27:17,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246486665] [2020-10-16 12:27:17,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:17,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:17,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:17,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:17,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:17,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1318833548] [2020-10-16 12:27:17,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:17,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:17,972 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:17,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:17,989 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:17,989 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,996 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:17,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:17,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:17,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:17,997 INFO L87 Difference]: Start difference. First operand 221 states and 590 transitions. Second operand 10 states. [2020-10-16 12:27:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:18,095 INFO L93 Difference]: Finished difference Result 278 states and 699 transitions. [2020-10-16 12:27:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:18,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:18,097 INFO L225 Difference]: With dead ends: 278 [2020-10-16 12:27:18,097 INFO L226 Difference]: Without dead ends: 275 [2020-10-16 12:27:18,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:18,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-16 12:27:18,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 219. [2020-10-16 12:27:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 584 transitions. [2020-10-16 12:27:18,104 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 584 transitions. Word has length 14 [2020-10-16 12:27:18,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:18,104 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 584 transitions. [2020-10-16 12:27:18,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 584 transitions. [2020-10-16 12:27:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:18,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:18,105 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:18,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:18,316 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:18,316 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 91 times [2020-10-16 12:27:18,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:18,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486603529] [2020-10-16 12:27:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486603529] [2020-10-16 12:27:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668608357] [2020-10-16 12:27:18,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:18,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:18,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:18,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:18,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1118810463] [2020-10-16 12:27:18,826 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:18,829 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:18,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:18,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:18,850 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:18,850 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,866 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:18,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:18,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:18,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:18,868 INFO L87 Difference]: Start difference. First operand 219 states and 584 transitions. Second operand 10 states. [2020-10-16 12:27:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:19,046 INFO L93 Difference]: Finished difference Result 281 states and 706 transitions. [2020-10-16 12:27:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:19,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:19,048 INFO L225 Difference]: With dead ends: 281 [2020-10-16 12:27:19,048 INFO L226 Difference]: Without dead ends: 278 [2020-10-16 12:27:19,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-16 12:27:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 220. [2020-10-16 12:27:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 12:27:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 587 transitions. [2020-10-16 12:27:19,053 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 587 transitions. Word has length 14 [2020-10-16 12:27:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:19,054 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 587 transitions. [2020-10-16 12:27:19,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 587 transitions. [2020-10-16 12:27:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:19,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:19,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:19,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 12:27:19,267 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:19,267 INFO L82 PathProgramCache]: Analyzing trace with hash 291304958, now seen corresponding path program 92 times [2020-10-16 12:27:19,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:19,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963135461] [2020-10-16 12:27:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:19,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963135461] [2020-10-16 12:27:19,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962910061] [2020-10-16 12:27:19,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:19,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:19,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:19,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:19,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:19,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:19,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006060495] [2020-10-16 12:27:19,690 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:19,691 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:19,695 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:19,695 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:19,703 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:19,704 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,718 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:19,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:19,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:19,719 INFO L87 Difference]: Start difference. First operand 220 states and 587 transitions. Second operand 10 states. [2020-10-16 12:27:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:19,839 INFO L93 Difference]: Finished difference Result 288 states and 726 transitions. [2020-10-16 12:27:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:19,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:19,841 INFO L225 Difference]: With dead ends: 288 [2020-10-16 12:27:19,841 INFO L226 Difference]: Without dead ends: 284 [2020-10-16 12:27:19,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-16 12:27:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 217. [2020-10-16 12:27:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 578 transitions. [2020-10-16 12:27:19,850 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 578 transitions. Word has length 14 [2020-10-16 12:27:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:19,850 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 578 transitions. [2020-10-16 12:27:19,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 578 transitions. [2020-10-16 12:27:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:19,851 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:20,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:20,062 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 93 times [2020-10-16 12:27:20,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:20,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955134686] [2020-10-16 12:27:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:20,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955134686] [2020-10-16 12:27:20,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276028289] [2020-10-16 12:27:20,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:20,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:20,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:20,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:20,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:20,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:20,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1836903378] [2020-10-16 12:27:20,422 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:20,423 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:20,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:20,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:20,435 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:20,435 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:20,445 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:20,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:20,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:20,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:20,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:20,446 INFO L87 Difference]: Start difference. First operand 217 states and 578 transitions. Second operand 10 states. [2020-10-16 12:27:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:20,610 INFO L93 Difference]: Finished difference Result 278 states and 699 transitions. [2020-10-16 12:27:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:20,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:20,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:20,612 INFO L225 Difference]: With dead ends: 278 [2020-10-16 12:27:20,612 INFO L226 Difference]: Without dead ends: 275 [2020-10-16 12:27:20,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-16 12:27:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 219. [2020-10-16 12:27:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 584 transitions. [2020-10-16 12:27:20,617 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 584 transitions. Word has length 14 [2020-10-16 12:27:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:20,618 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 584 transitions. [2020-10-16 12:27:20,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 584 transitions. [2020-10-16 12:27:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:20,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:20,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:20,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 12:27:20,820 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 94 times [2020-10-16 12:27:20,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:20,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295407364] [2020-10-16 12:27:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:20,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295407364] [2020-10-16 12:27:20,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842319584] [2020-10-16 12:27:20,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:20,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:20,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:20,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:20,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:24,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:24,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:24,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [448772281] [2020-10-16 12:27:24,275 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:24,276 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:24,278 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:24,278 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:24,285 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:24,285 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:24,294 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:24,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:24,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:24,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:24,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-16 12:27:24,295 INFO L87 Difference]: Start difference. First operand 219 states and 584 transitions. Second operand 10 states. [2020-10-16 12:27:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:24,465 INFO L93 Difference]: Finished difference Result 288 states and 728 transitions. [2020-10-16 12:27:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:24,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:24,466 INFO L225 Difference]: With dead ends: 288 [2020-10-16 12:27:24,466 INFO L226 Difference]: Without dead ends: 284 [2020-10-16 12:27:24,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=127, Invalid=292, Unknown=1, NotChecked=0, Total=420 [2020-10-16 12:27:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-16 12:27:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 218. [2020-10-16 12:27:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:27:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 581 transitions. [2020-10-16 12:27:24,472 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 581 transitions. Word has length 14 [2020-10-16 12:27:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:24,473 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 581 transitions. [2020-10-16 12:27:24,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 581 transitions. [2020-10-16 12:27:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:24,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:24,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:24,676 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 95 times [2020-10-16 12:27:24,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:24,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98915503] [2020-10-16 12:27:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98915503] [2020-10-16 12:27:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140703382] [2020-10-16 12:27:24,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:24,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:24,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:24,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:24,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:25,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:25,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:25,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2066779755] [2020-10-16 12:27:25,579 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:25,579 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:25,581 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:25,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:25,594 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:25,594 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:25,604 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:25,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:25,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:25,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:25,606 INFO L87 Difference]: Start difference. First operand 218 states and 581 transitions. Second operand 10 states. [2020-10-16 12:27:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:25,779 INFO L93 Difference]: Finished difference Result 286 states and 723 transitions. [2020-10-16 12:27:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:25,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:25,781 INFO L225 Difference]: With dead ends: 286 [2020-10-16 12:27:25,781 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 12:27:25,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 12:27:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 219. [2020-10-16 12:27:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 584 transitions. [2020-10-16 12:27:25,786 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 584 transitions. Word has length 14 [2020-10-16 12:27:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:25,787 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 584 transitions. [2020-10-16 12:27:25,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 584 transitions. [2020-10-16 12:27:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:25,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:25,787 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:25,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-16 12:27:25,998 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:25,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:25,998 INFO L82 PathProgramCache]: Analyzing trace with hash 292228479, now seen corresponding path program 96 times [2020-10-16 12:27:26,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:26,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042178095] [2020-10-16 12:27:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042178095] [2020-10-16 12:27:26,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837750911] [2020-10-16 12:27:26,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:26,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:26,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:26,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:26,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:26,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:26,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1556199324] [2020-10-16 12:27:26,334 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:26,334 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:26,336 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:26,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:26,343 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:26,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,351 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:26,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:26,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:26,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:26,353 INFO L87 Difference]: Start difference. First operand 219 states and 584 transitions. Second operand 10 states. [2020-10-16 12:27:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:26,516 INFO L93 Difference]: Finished difference Result 291 states and 736 transitions. [2020-10-16 12:27:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:26,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:26,517 INFO L225 Difference]: With dead ends: 291 [2020-10-16 12:27:26,517 INFO L226 Difference]: Without dead ends: 286 [2020-10-16 12:27:26,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-16 12:27:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 215. [2020-10-16 12:27:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:27:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 572 transitions. [2020-10-16 12:27:26,521 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 572 transitions. Word has length 14 [2020-10-16 12:27:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:26,521 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 572 transitions. [2020-10-16 12:27:26,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 572 transitions. [2020-10-16 12:27:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:26,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:26,521 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:26,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-16 12:27:26,722 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:26,723 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 97 times [2020-10-16 12:27:26,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:26,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615937979] [2020-10-16 12:27:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615937979] [2020-10-16 12:27:26,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953325114] [2020-10-16 12:27:26,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:26,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:26,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:27,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:27,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1524995768] [2020-10-16 12:27:27,090 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:27,092 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:27,096 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:27,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:27,100 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:27,100 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,113 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,113 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,158 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60583#(and (<= (+ ~i~0 (* 4 ~j~0)) 14) (< ~i~0 144))] [2020-10-16 12:27:27,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:27,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:27,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:27,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:27,159 INFO L87 Difference]: Start difference. First operand 215 states and 572 transitions. Second operand 11 states. [2020-10-16 12:27:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:27,379 INFO L93 Difference]: Finished difference Result 296 states and 736 transitions. [2020-10-16 12:27:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:27,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:27,381 INFO L225 Difference]: With dead ends: 296 [2020-10-16 12:27:27,381 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 12:27:27,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 12:27:27,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 224. [2020-10-16 12:27:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-16 12:27:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 601 transitions. [2020-10-16 12:27:27,385 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 601 transitions. Word has length 14 [2020-10-16 12:27:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:27,386 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 601 transitions. [2020-10-16 12:27:27,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 601 transitions. [2020-10-16 12:27:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:27,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:27,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:27,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:27,598 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 98 times [2020-10-16 12:27:27,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:27,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439560079] [2020-10-16 12:27:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439560079] [2020-10-16 12:27:27,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305700590] [2020-10-16 12:27:27,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:27,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:27,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:27,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:27,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:27,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:27,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [89601664] [2020-10-16 12:27:27,931 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:27,932 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:27,935 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:27,935 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:27,936 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,936 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:27,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,988 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [61396#(and (< ~i~0 144) (<= (+ (* 2 ~i~0) (* 5 ~j~0)) 19))] [2020-10-16 12:27:27,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:27,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:27,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:27,989 INFO L87 Difference]: Start difference. First operand 224 states and 601 transitions. Second operand 11 states. [2020-10-16 12:27:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:28,237 INFO L93 Difference]: Finished difference Result 308 states and 771 transitions. [2020-10-16 12:27:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:28,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:28,239 INFO L225 Difference]: With dead ends: 308 [2020-10-16 12:27:28,239 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:27:28,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:27:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 221. [2020-10-16 12:27:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:27:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 592 transitions. [2020-10-16 12:27:28,243 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 592 transitions. Word has length 14 [2020-10-16 12:27:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:28,243 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 592 transitions. [2020-10-16 12:27:28,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 592 transitions. [2020-10-16 12:27:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:28,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:28,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:28,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:28,444 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:28,445 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 99 times [2020-10-16 12:27:28,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:28,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318670862] [2020-10-16 12:27:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318670862] [2020-10-16 12:27:28,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476592024] [2020-10-16 12:27:28,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:28,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:28,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:28,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:28,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:28,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:28,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1940440497] [2020-10-16 12:27:28,736 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:28,737 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:28,739 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:28,740 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:28,742 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:28,742 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:28,755 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:28,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:28,784 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62215#(and (<= (+ (* 3 ~i~0) (* 5 ~j~0)) 21) (< ~i~0 144))] [2020-10-16 12:27:28,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:28,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:28,785 INFO L87 Difference]: Start difference. First operand 221 states and 592 transitions. Second operand 11 states. [2020-10-16 12:27:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:29,020 INFO L93 Difference]: Finished difference Result 307 states and 771 transitions. [2020-10-16 12:27:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:29,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:29,021 INFO L225 Difference]: With dead ends: 307 [2020-10-16 12:27:29,021 INFO L226 Difference]: Without dead ends: 303 [2020-10-16 12:27:29,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-16 12:27:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 223. [2020-10-16 12:27:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-16 12:27:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 598 transitions. [2020-10-16 12:27:29,026 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 598 transitions. Word has length 14 [2020-10-16 12:27:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:29,027 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 598 transitions. [2020-10-16 12:27:29,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 598 transitions. [2020-10-16 12:27:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:29,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:29,027 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:29,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-16 12:27:29,228 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash 319934109, now seen corresponding path program 100 times [2020-10-16 12:27:29,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:29,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920031996] [2020-10-16 12:27:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:29,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920031996] [2020-10-16 12:27:29,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622175581] [2020-10-16 12:27:29,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:29,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:29,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:29,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:29,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:29,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:29,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:29,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [914649811] [2020-10-16 12:27:29,523 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:29,524 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:29,526 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:29,526 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:29,528 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:29,529 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,539 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,568 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63037#(and (<= (+ (* 3 ~i~0) (* 4 ~j~0)) 18) (< ~i~0 144))] [2020-10-16 12:27:29,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:29,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:29,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:29,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:29,569 INFO L87 Difference]: Start difference. First operand 223 states and 598 transitions. Second operand 11 states. [2020-10-16 12:27:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:29,811 INFO L93 Difference]: Finished difference Result 315 states and 793 transitions. [2020-10-16 12:27:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:29,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:29,812 INFO L225 Difference]: With dead ends: 315 [2020-10-16 12:27:29,813 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:27:29,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:27:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 218. [2020-10-16 12:27:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:27:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 583 transitions. [2020-10-16 12:27:29,817 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 583 transitions. Word has length 14 [2020-10-16 12:27:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:29,818 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 583 transitions. [2020-10-16 12:27:29,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 583 transitions. [2020-10-16 12:27:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:29,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:29,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:30,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:30,030 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash 320826878, now seen corresponding path program 101 times [2020-10-16 12:27:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:30,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754582305] [2020-10-16 12:27:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:30,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754582305] [2020-10-16 12:27:30,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516160702] [2020-10-16 12:27:30,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:30,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:30,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:30,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:30,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:30,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:30,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1562677831] [2020-10-16 12:27:30,362 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:30,364 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:30,366 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:30,366 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:30,367 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,367 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,399 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:30,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,453 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [63857#(and (<= (+ ~i~0 (* 3 ~j~0)) 17) (< ~i~0 144)), 63858#(and (<= (+ (* 4 ~i~0) (* 3 ~j~0)) 17) (< ~i~0 144))] [2020-10-16 12:27:30,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:30,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:30,454 INFO L87 Difference]: Start difference. First operand 218 states and 583 transitions. Second operand 12 states. [2020-10-16 12:27:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:30,801 INFO L93 Difference]: Finished difference Result 316 states and 790 transitions. [2020-10-16 12:27:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:30,802 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:30,803 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:27:30,803 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:27:30,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:27:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 224. [2020-10-16 12:27:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-16 12:27:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 605 transitions. [2020-10-16 12:27:30,808 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 605 transitions. Word has length 14 [2020-10-16 12:27:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:30,808 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 605 transitions. [2020-10-16 12:27:30,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 605 transitions. [2020-10-16 12:27:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:30,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:30,809 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:31,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-16 12:27:31,009 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:31,010 INFO L82 PathProgramCache]: Analyzing trace with hash 320827839, now seen corresponding path program 102 times [2020-10-16 12:27:31,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:31,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737850572] [2020-10-16 12:27:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737850572] [2020-10-16 12:27:31,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140503819] [2020-10-16 12:27:31,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:31,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:31,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:31,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:31,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:31,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:31,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [703226122] [2020-10-16 12:27:31,351 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:31,352 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:31,354 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:31,354 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:31,355 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,355 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,387 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,388 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,430 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:31,430 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [64699#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 19) (< ~i~0 144)), 64700#(and (< ~i~0 144) (<= (+ (* 5 ~i~0) (* 3 ~j~0)) 19))] [2020-10-16 12:27:31,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:31,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:31,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:31,439 INFO L87 Difference]: Start difference. First operand 224 states and 605 transitions. Second operand 12 states. [2020-10-16 12:27:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:31,776 INFO L93 Difference]: Finished difference Result 331 states and 831 transitions. [2020-10-16 12:27:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:31,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:31,778 INFO L225 Difference]: With dead ends: 331 [2020-10-16 12:27:31,778 INFO L226 Difference]: Without dead ends: 326 [2020-10-16 12:27:31,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-16 12:27:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 221. [2020-10-16 12:27:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:27:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 596 transitions. [2020-10-16 12:27:31,783 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 596 transitions. Word has length 14 [2020-10-16 12:27:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:31,783 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 596 transitions. [2020-10-16 12:27:31,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 596 transitions. [2020-10-16 12:27:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:31,784 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:31,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-16 12:27:31,995 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:31,995 INFO L82 PathProgramCache]: Analyzing trace with hash 320856669, now seen corresponding path program 103 times [2020-10-16 12:27:31,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:31,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946338087] [2020-10-16 12:27:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:32,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946338087] [2020-10-16 12:27:32,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145395488] [2020-10-16 12:27:32,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:32,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:32,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:32,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:32,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [563172862] [2020-10-16 12:27:32,307 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:32,308 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:32,311 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:32,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:32,317 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:32,318 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,324 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,356 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,357 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,393 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,393 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,431 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [65549#(and (< ~i~0 144) (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 16)), 65548#(and (< ~i~0 144) (<= (+ ~i~0 (* 2 ~j~0)) 16)), 65550#(and (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 16) (< ~i~0 144))] [2020-10-16 12:27:32,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:32,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:32,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:32,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:32,431 INFO L87 Difference]: Start difference. First operand 221 states and 596 transitions. Second operand 13 states. [2020-10-16 12:27:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:32,822 INFO L93 Difference]: Finished difference Result 324 states and 810 transitions. [2020-10-16 12:27:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:32,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:32,824 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:27:32,824 INFO L226 Difference]: Without dead ends: 319 [2020-10-16 12:27:32,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-16 12:27:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 224. [2020-10-16 12:27:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-16 12:27:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 607 transitions. [2020-10-16 12:27:32,830 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 607 transitions. Word has length 14 [2020-10-16 12:27:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:32,831 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 607 transitions. [2020-10-16 12:27:32,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 607 transitions. [2020-10-16 12:27:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:32,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:32,832 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:33,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-16 12:27:33,045 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 104 times [2020-10-16 12:27:33,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:33,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349232651] [2020-10-16 12:27:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349232651] [2020-10-16 12:27:33,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097659048] [2020-10-16 12:27:33,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:33,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:33,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:33,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:33,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:33,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:33,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1736054305] [2020-10-16 12:27:33,357 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:33,358 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:33,360 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:33,361 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:33,363 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:33,363 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,373 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,373 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,405 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,406 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,440 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,440 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,476 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,515 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,516 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [66401#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (< ~i~0 144)), 66400#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 144)), 66403#(and (< ~i~0 144) (<= (+ (* 4 ~i~0) ~j~0) 11)), 66402#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (< ~i~0 144)), 66399#(and (<= ~j~0 11) (< ~i~0 144))] [2020-10-16 12:27:33,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:27:33,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:33,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:27:33,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:33,557 INFO L87 Difference]: Start difference. First operand 224 states and 607 transitions. Second operand 15 states. [2020-10-16 12:27:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:33,975 INFO L93 Difference]: Finished difference Result 342 states and 874 transitions. [2020-10-16 12:27:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:33,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-10-16 12:27:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:33,977 INFO L225 Difference]: With dead ends: 342 [2020-10-16 12:27:33,977 INFO L226 Difference]: Without dead ends: 333 [2020-10-16 12:27:33,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-16 12:27:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 219. [2020-10-16 12:27:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 592 transitions. [2020-10-16 12:27:33,982 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 592 transitions. Word has length 14 [2020-10-16 12:27:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:33,982 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 592 transitions. [2020-10-16 12:27:33,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:27:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 592 transitions. [2020-10-16 12:27:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:33,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:34,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:34,183 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:34,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 105 times [2020-10-16 12:27:34,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:34,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344239921] [2020-10-16 12:27:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:34,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344239921] [2020-10-16 12:27:34,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514698939] [2020-10-16 12:27:34,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:34,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:34,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:34,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:34,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:35,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:35,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1542066026] [2020-10-16 12:27:35,029 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:35,030 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:35,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:35,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:35,046 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:35,046 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,054 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,054 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,090 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,090 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,131 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [67261#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 17) (< ~i~0 144)), 67260#(and (<= (+ ~i~0 (* 2 ~j~0)) 17) (< ~i~0 144))] [2020-10-16 12:27:35,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:35,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:35,132 INFO L87 Difference]: Start difference. First operand 219 states and 592 transitions. Second operand 12 states. [2020-10-16 12:27:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:35,425 INFO L93 Difference]: Finished difference Result 317 states and 800 transitions. [2020-10-16 12:27:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:35,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:35,427 INFO L225 Difference]: With dead ends: 317 [2020-10-16 12:27:35,427 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:27:35,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:27:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 224. [2020-10-16 12:27:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-16 12:27:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 611 transitions. [2020-10-16 12:27:35,433 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 611 transitions. Word has length 14 [2020-10-16 12:27:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:35,433 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 611 transitions. [2020-10-16 12:27:35,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 611 transitions. [2020-10-16 12:27:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:35,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:35,434 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:35,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-16 12:27:35,645 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1428493811, now seen corresponding path program 106 times [2020-10-16 12:27:35,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:35,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737939084] [2020-10-16 12:27:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737939084] [2020-10-16 12:27:35,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681261456] [2020-10-16 12:27:35,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:35,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:35,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:35,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:35,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:35,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:35,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [764683832] [2020-10-16 12:27:35,966 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:35,966 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:35,969 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:35,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:35,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,005 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:36,006 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,043 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:36,043 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,079 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:36,079 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,122 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:36,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,137 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [68099#(and (< ~i~0 144) (<= ~j~0 13)), 68101#(and (<= (+ (* 2 ~i~0) ~j~0) 13) (< ~i~0 144)), 68100#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 144)), 68102#(and (<= (+ (* 3 ~i~0) ~j~0) 13) (< ~i~0 144))] [2020-10-16 12:27:36,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:27:36,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:36,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:27:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:36,138 INFO L87 Difference]: Start difference. First operand 224 states and 611 transitions. Second operand 14 states. [2020-10-16 12:27:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:36,491 INFO L93 Difference]: Finished difference Result 347 states and 892 transitions. [2020-10-16 12:27:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:36,492 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:27:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:36,494 INFO L225 Difference]: With dead ends: 347 [2020-10-16 12:27:36,494 INFO L226 Difference]: Without dead ends: 338 [2020-10-16 12:27:36,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=603, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-16 12:27:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 219. [2020-10-16 12:27:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 596 transitions. [2020-10-16 12:27:36,499 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 596 transitions. Word has length 14 [2020-10-16 12:27:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:36,500 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 596 transitions. [2020-10-16 12:27:36,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:27:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 596 transitions. [2020-10-16 12:27:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:36,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:36,501 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:36,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:36,713 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 107 times [2020-10-16 12:27:36,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:36,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831805574] [2020-10-16 12:27:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831805574] [2020-10-16 12:27:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904581137] [2020-10-16 12:27:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:36,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:36,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:36,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:36,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:37,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:37,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [455622046] [2020-10-16 12:27:37,041 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:37,043 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:37,046 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 44 transitions. [2020-10-16 12:27:37,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:37,051 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:37,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:37,075 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:37,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:37,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:37,076 INFO L87 Difference]: Start difference. First operand 219 states and 596 transitions. Second operand 10 states. [2020-10-16 12:27:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:37,187 INFO L93 Difference]: Finished difference Result 254 states and 656 transitions. [2020-10-16 12:27:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:37,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:37,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:37,189 INFO L225 Difference]: With dead ends: 254 [2020-10-16 12:27:37,189 INFO L226 Difference]: Without dead ends: 252 [2020-10-16 12:27:37,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-16 12:27:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 221. [2020-10-16 12:27:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:27:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 602 transitions. [2020-10-16 12:27:37,194 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 602 transitions. Word has length 14 [2020-10-16 12:27:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 602 transitions. [2020-10-16 12:27:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 602 transitions. [2020-10-16 12:27:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:37,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:37,194 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:37,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:37,395 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:37,396 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 108 times [2020-10-16 12:27:37,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:37,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068191738] [2020-10-16 12:27:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068191738] [2020-10-16 12:27:37,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352520964] [2020-10-16 12:27:37,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:37,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:37,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:37,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:37,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:37,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1525505969] [2020-10-16 12:27:37,716 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:37,718 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:37,720 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:37,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:37,726 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:37,726 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:37,746 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:37,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:37,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:37,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:37,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:37,748 INFO L87 Difference]: Start difference. First operand 221 states and 602 transitions. Second operand 10 states. [2020-10-16 12:27:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:37,885 INFO L93 Difference]: Finished difference Result 266 states and 689 transitions. [2020-10-16 12:27:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:37,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:37,886 INFO L225 Difference]: With dead ends: 266 [2020-10-16 12:27:37,886 INFO L226 Difference]: Without dead ends: 263 [2020-10-16 12:27:37,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-16 12:27:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 217. [2020-10-16 12:27:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 590 transitions. [2020-10-16 12:27:37,891 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 590 transitions. Word has length 14 [2020-10-16 12:27:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:37,891 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 590 transitions. [2020-10-16 12:27:37,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 590 transitions. [2020-10-16 12:27:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:37,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:37,891 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:38,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:38,092 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 109 times [2020-10-16 12:27:38,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:38,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479400866] [2020-10-16 12:27:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479400866] [2020-10-16 12:27:38,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312409278] [2020-10-16 12:27:38,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:38,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:38,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:38,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1905908909] [2020-10-16 12:27:38,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:38,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:38,426 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-10-16 12:27:38,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:38,431 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:38,432 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,464 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:38,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:38,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:38,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:38,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:38,465 INFO L87 Difference]: Start difference. First operand 217 states and 590 transitions. Second operand 10 states. [2020-10-16 12:27:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:38,617 INFO L93 Difference]: Finished difference Result 251 states and 648 transitions. [2020-10-16 12:27:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:27:38,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:38,619 INFO L225 Difference]: With dead ends: 251 [2020-10-16 12:27:38,619 INFO L226 Difference]: Without dead ends: 249 [2020-10-16 12:27:38,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-16 12:27:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 218. [2020-10-16 12:27:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:27:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 593 transitions. [2020-10-16 12:27:38,623 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 593 transitions. Word has length 14 [2020-10-16 12:27:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:38,623 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 593 transitions. [2020-10-16 12:27:38,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:38,624 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 593 transitions. [2020-10-16 12:27:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:38,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:38,624 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:38,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:38,825 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:38,825 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 110 times [2020-10-16 12:27:38,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:38,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75409140] [2020-10-16 12:27:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75409140] [2020-10-16 12:27:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37232034] [2020-10-16 12:27:38,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:38,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:38,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:38,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:38,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:39,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:39,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:39,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574736014] [2020-10-16 12:27:39,144 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:39,145 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:39,148 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-10-16 12:27:39,148 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:39,152 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:39,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,176 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,176 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,216 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,217 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,255 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [71235#(and (<= ~j~0 11) (< ~i~0 144)), 71236#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 144))] [2020-10-16 12:27:39,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:39,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:39,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:39,257 INFO L87 Difference]: Start difference. First operand 218 states and 593 transitions. Second operand 12 states. [2020-10-16 12:27:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:39,500 INFO L93 Difference]: Finished difference Result 297 states and 755 transitions. [2020-10-16 12:27:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:39,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:39,503 INFO L225 Difference]: With dead ends: 297 [2020-10-16 12:27:39,503 INFO L226 Difference]: Without dead ends: 289 [2020-10-16 12:27:39,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-16 12:27:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 216. [2020-10-16 12:27:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:27:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 591 transitions. [2020-10-16 12:27:39,508 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 591 transitions. Word has length 14 [2020-10-16 12:27:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:39,509 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 591 transitions. [2020-10-16 12:27:39,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 591 transitions. [2020-10-16 12:27:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:39,510 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:39,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-16 12:27:39,723 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 111 times [2020-10-16 12:27:39,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976467774] [2020-10-16 12:27:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:39,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976467774] [2020-10-16 12:27:39,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213190483] [2020-10-16 12:27:39,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:39,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:39,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:39,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:39,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:40,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:40,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1948964475] [2020-10-16 12:27:40,047 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:40,048 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:40,051 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-10-16 12:27:40,051 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:40,064 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,100 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [72036#(and (<= ~j~0 14) (< ~i~0 144))] [2020-10-16 12:27:40,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:40,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:40,101 INFO L87 Difference]: Start difference. First operand 216 states and 591 transitions. Second operand 11 states. [2020-10-16 12:27:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:40,436 INFO L93 Difference]: Finished difference Result 311 states and 804 transitions. [2020-10-16 12:27:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:40,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:40,438 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:27:40,438 INFO L226 Difference]: Without dead ends: 302 [2020-10-16 12:27:40,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-16 12:27:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2020-10-16 12:27:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:27:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 590 transitions. [2020-10-16 12:27:40,444 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 590 transitions. Word has length 14 [2020-10-16 12:27:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:40,444 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 590 transitions. [2020-10-16 12:27:40,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 590 transitions. [2020-10-16 12:27:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:40,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:40,445 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:40,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-16 12:27:40,655 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:40,656 INFO L82 PathProgramCache]: Analyzing trace with hash -743033653, now seen corresponding path program 112 times [2020-10-16 12:27:40,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:40,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022620411] [2020-10-16 12:27:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022620411] [2020-10-16 12:27:40,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651084926] [2020-10-16 12:27:40,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:40,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:40,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:40,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:40,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:41,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:41,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:41,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1752913519] [2020-10-16 12:27:41,042 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:41,042 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:41,045 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:41,045 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:41,059 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:41,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:41,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:41,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:41,060 INFO L87 Difference]: Start difference. First operand 216 states and 590 transitions. Second operand 10 states. [2020-10-16 12:27:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:41,389 INFO L93 Difference]: Finished difference Result 307 states and 780 transitions. [2020-10-16 12:27:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:41,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:41,391 INFO L225 Difference]: With dead ends: 307 [2020-10-16 12:27:41,391 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:27:41,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:27:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 218. [2020-10-16 12:27:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:27:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 598 transitions. [2020-10-16 12:27:41,396 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 598 transitions. Word has length 14 [2020-10-16 12:27:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:41,396 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 598 transitions. [2020-10-16 12:27:41,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 598 transitions. [2020-10-16 12:27:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:41,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:41,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:41,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-16 12:27:41,598 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash -743032692, now seen corresponding path program 113 times [2020-10-16 12:27:41,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:41,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110763490] [2020-10-16 12:27:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:41,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110763490] [2020-10-16 12:27:41,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103361811] [2020-10-16 12:27:41,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:41,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:41,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:41,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:42,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:42,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1966023597] [2020-10-16 12:27:42,036 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:42,037 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:42,039 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:27:42,039 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:42,051 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,084 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,084 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,132 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [73671#(and (< ~i~0 144) (<= ~j~0 18)), 73672#(and (<= (+ ~i~0 ~j~0) 18) (< ~i~0 144))] [2020-10-16 12:27:42,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:42,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:42,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:42,134 INFO L87 Difference]: Start difference. First operand 218 states and 598 transitions. Second operand 12 states. [2020-10-16 12:27:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:42,544 INFO L93 Difference]: Finished difference Result 327 states and 860 transitions. [2020-10-16 12:27:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:42,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:42,546 INFO L225 Difference]: With dead ends: 327 [2020-10-16 12:27:42,546 INFO L226 Difference]: Without dead ends: 320 [2020-10-16 12:27:42,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=561, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-16 12:27:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 217. [2020-10-16 12:27:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 595 transitions. [2020-10-16 12:27:42,552 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 595 transitions. Word has length 14 [2020-10-16 12:27:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:42,553 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 595 transitions. [2020-10-16 12:27:42,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 595 transitions. [2020-10-16 12:27:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:42,554 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:42,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-16 12:27:42,754 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:42,755 INFO L82 PathProgramCache]: Analyzing trace with hash -742370563, now seen corresponding path program 114 times [2020-10-16 12:27:42,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:42,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819144294] [2020-10-16 12:27:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819144294] [2020-10-16 12:27:42,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170804825] [2020-10-16 12:27:42,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:42,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:42,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:42,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:43,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:43,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:43,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [346833770] [2020-10-16 12:27:43,166 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:43,167 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:43,170 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:43,170 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:43,176 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:43,176 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:43,221 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [74510#(and (<= ~j~0 15) (< ~i~0 144))] [2020-10-16 12:27:43,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:43,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:43,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:43,222 INFO L87 Difference]: Start difference. First operand 217 states and 595 transitions. Second operand 11 states. [2020-10-16 12:27:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:43,690 INFO L93 Difference]: Finished difference Result 312 states and 810 transitions. [2020-10-16 12:27:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:43,692 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:43,693 INFO L225 Difference]: With dead ends: 312 [2020-10-16 12:27:43,693 INFO L226 Difference]: Without dead ends: 302 [2020-10-16 12:27:43,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-16 12:27:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2020-10-16 12:27:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:27:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 589 transitions. [2020-10-16 12:27:43,701 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 589 transitions. Word has length 14 [2020-10-16 12:27:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:43,701 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 589 transitions. [2020-10-16 12:27:43,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 589 transitions. [2020-10-16 12:27:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:43,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:43,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:43,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:43,920 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash -741447042, now seen corresponding path program 115 times [2020-10-16 12:27:43,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:43,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53521109] [2020-10-16 12:27:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:44,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53521109] [2020-10-16 12:27:44,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779464253] [2020-10-16 12:27:44,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:44,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:44,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:44,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:44,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [571527301] [2020-10-16 12:27:44,453 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:44,454 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:44,459 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:44,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:44,485 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:44,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:44,514 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [75331#(and (<= ~j~0 17) (< ~i~0 144))] [2020-10-16 12:27:44,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:44,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:44,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:44,517 INFO L87 Difference]: Start difference. First operand 216 states and 589 transitions. Second operand 11 states. [2020-10-16 12:27:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:44,932 INFO L93 Difference]: Finished difference Result 324 states and 852 transitions. [2020-10-16 12:27:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:44,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:44,935 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:27:44,936 INFO L226 Difference]: Without dead ends: 317 [2020-10-16 12:27:44,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-16 12:27:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 215. [2020-10-16 12:27:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:27:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 584 transitions. [2020-10-16 12:27:44,945 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 584 transitions. Word has length 14 [2020-10-16 12:27:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:44,946 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 584 transitions. [2020-10-16 12:27:44,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 584 transitions. [2020-10-16 12:27:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:44,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:44,947 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:45,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-16 12:27:45,163 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash 95285087, now seen corresponding path program 116 times [2020-10-16 12:27:45,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:45,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619877997] [2020-10-16 12:27:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619877997] [2020-10-16 12:27:45,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875511516] [2020-10-16 12:27:45,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:45,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:45,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:45,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:45,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:45,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:45,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1820232685] [2020-10-16 12:27:45,474 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:45,475 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:45,477 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:45,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:45,484 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:45,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:45,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:45,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:45,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:45,486 INFO L87 Difference]: Start difference. First operand 215 states and 584 transitions. Second operand 10 states. [2020-10-16 12:27:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:45,829 INFO L93 Difference]: Finished difference Result 309 states and 786 transitions. [2020-10-16 12:27:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:45,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:45,831 INFO L225 Difference]: With dead ends: 309 [2020-10-16 12:27:45,832 INFO L226 Difference]: Without dead ends: 306 [2020-10-16 12:27:45,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-16 12:27:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 218. [2020-10-16 12:27:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:27:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 595 transitions. [2020-10-16 12:27:45,836 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 595 transitions. Word has length 14 [2020-10-16 12:27:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:45,836 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 595 transitions. [2020-10-16 12:27:45,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 595 transitions. [2020-10-16 12:27:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:45,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:45,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:46,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-16 12:27:46,038 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash 95286048, now seen corresponding path program 117 times [2020-10-16 12:27:46,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:46,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908068087] [2020-10-16 12:27:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908068087] [2020-10-16 12:27:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58161038] [2020-10-16 12:27:46,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:46,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:27:46,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:46,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:46,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:46,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1738099087] [2020-10-16 12:27:46,403 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:46,404 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:46,407 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:46,407 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:46,420 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:46,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:46,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:46,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:46,421 INFO L87 Difference]: Start difference. First operand 218 states and 595 transitions. Second operand 10 states. [2020-10-16 12:27:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:46,783 INFO L93 Difference]: Finished difference Result 318 states and 813 transitions. [2020-10-16 12:27:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:46,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:46,784 INFO L225 Difference]: With dead ends: 318 [2020-10-16 12:27:46,784 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:27:46,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:27:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 219. [2020-10-16 12:27:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 597 transitions. [2020-10-16 12:27:46,788 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 597 transitions. Word has length 14 [2020-10-16 12:27:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:46,789 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 597 transitions. [2020-10-16 12:27:46,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 597 transitions. [2020-10-16 12:27:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:46,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:46,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:46,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-16 12:27:46,990 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:46,991 INFO L82 PathProgramCache]: Analyzing trace with hash 95314878, now seen corresponding path program 118 times [2020-10-16 12:27:46,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:46,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252145521] [2020-10-16 12:27:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252145521] [2020-10-16 12:27:47,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57017919] [2020-10-16 12:27:47,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:47,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:47,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:47,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:47,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:47,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:47,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1563959054] [2020-10-16 12:27:47,280 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:47,281 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:47,283 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:47,283 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:47,290 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:47,290 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:47,321 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [77813#(and (<= (+ ~i~0 (* 2 ~j~0)) 21) (< ~i~0 144))] [2020-10-16 12:27:47,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:47,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:47,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:47,323 INFO L87 Difference]: Start difference. First operand 219 states and 597 transitions. Second operand 11 states. [2020-10-16 12:27:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:47,751 INFO L93 Difference]: Finished difference Result 321 states and 822 transitions. [2020-10-16 12:27:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:47,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:47,753 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:27:47,753 INFO L226 Difference]: Without dead ends: 317 [2020-10-16 12:27:47,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-16 12:27:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 219. [2020-10-16 12:27:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 599 transitions. [2020-10-16 12:27:47,757 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 599 transitions. Word has length 14 [2020-10-16 12:27:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:47,757 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 599 transitions. [2020-10-16 12:27:47,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 599 transitions. [2020-10-16 12:27:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:47,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:47,757 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:47,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:47,959 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash 115840877, now seen corresponding path program 119 times [2020-10-16 12:27:47,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:47,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198780166] [2020-10-16 12:27:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198780166] [2020-10-16 12:27:48,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692121382] [2020-10-16 12:27:48,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:48,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:48,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:48,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:48,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:48,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:48,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [659069321] [2020-10-16 12:27:48,269 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:48,271 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:48,273 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:48,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:48,280 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:48,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:48,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:48,281 INFO L87 Difference]: Start difference. First operand 219 states and 599 transitions. Second operand 10 states. [2020-10-16 12:27:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:48,697 INFO L93 Difference]: Finished difference Result 305 states and 780 transitions. [2020-10-16 12:27:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:48,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:48,698 INFO L225 Difference]: With dead ends: 305 [2020-10-16 12:27:48,698 INFO L226 Difference]: Without dead ends: 302 [2020-10-16 12:27:48,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-16 12:27:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 221. [2020-10-16 12:27:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:27:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 607 transitions. [2020-10-16 12:27:48,704 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 607 transitions. Word has length 14 [2020-10-16 12:27:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:48,705 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 607 transitions. [2020-10-16 12:27:48,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 607 transitions. [2020-10-16 12:27:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:48,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:48,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:48,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:48,917 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:48,918 INFO L82 PathProgramCache]: Analyzing trace with hash 115841838, now seen corresponding path program 120 times [2020-10-16 12:27:48,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:48,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056393436] [2020-10-16 12:27:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056393436] [2020-10-16 12:27:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592532898] [2020-10-16 12:27:49,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:49,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:27:49,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:49,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:49,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:49,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:49,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:49,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1670719936] [2020-10-16 12:27:49,218 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:49,219 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:49,221 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:49,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:49,228 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:49,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:49,262 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:49,262 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:49,298 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [79479#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 19)), 79478#(and (< ~i~0 144) (<= ~j~0 19))] [2020-10-16 12:27:49,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:49,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:49,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:49,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:49,299 INFO L87 Difference]: Start difference. First operand 221 states and 607 transitions. Second operand 12 states. [2020-10-16 12:27:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:49,769 INFO L93 Difference]: Finished difference Result 328 states and 869 transitions. [2020-10-16 12:27:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:49,770 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:49,771 INFO L225 Difference]: With dead ends: 328 [2020-10-16 12:27:49,771 INFO L226 Difference]: Without dead ends: 321 [2020-10-16 12:27:49,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-16 12:27:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 220. [2020-10-16 12:27:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 12:27:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-16 12:27:49,776 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 14 [2020-10-16 12:27:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:49,776 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-16 12:27:49,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-16 12:27:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:49,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:49,777 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:49,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:49,978 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:49,978 INFO L82 PathProgramCache]: Analyzing trace with hash 116503967, now seen corresponding path program 121 times [2020-10-16 12:27:49,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:49,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089848677] [2020-10-16 12:27:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:50,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089848677] [2020-10-16 12:27:50,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989431765] [2020-10-16 12:27:50,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:50,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:50,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:50,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:50,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:50,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991719675] [2020-10-16 12:27:50,287 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:50,288 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:50,290 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:50,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:50,292 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:50,292 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:50,328 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [80326#(and (<= ~j~0 14) (< ~i~0 144))] [2020-10-16 12:27:50,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:50,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:50,329 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 11 states. [2020-10-16 12:27:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:50,786 INFO L93 Difference]: Finished difference Result 313 states and 821 transitions. [2020-10-16 12:27:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:50,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:50,787 INFO L225 Difference]: With dead ends: 313 [2020-10-16 12:27:50,787 INFO L226 Difference]: Without dead ends: 302 [2020-10-16 12:27:50,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-16 12:27:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 219. [2020-10-16 12:27:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:27:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 597 transitions. [2020-10-16 12:27:50,791 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 597 transitions. Word has length 14 [2020-10-16 12:27:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:50,792 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 597 transitions. [2020-10-16 12:27:50,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 597 transitions. [2020-10-16 12:27:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:50,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:50,792 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-16 12:27:51,001 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 116765359, now seen corresponding path program 122 times [2020-10-16 12:27:51,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107913760] [2020-10-16 12:27:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107913760] [2020-10-16 12:27:51,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435753890] [2020-10-16 12:27:51,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:51,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:51,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:51,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:51,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:51,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:51,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1023939422] [2020-10-16 12:27:51,307 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:51,308 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:51,310 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:51,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:51,331 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:51,331 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:51,361 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:51,362 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:51,412 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [81157#(and (< ~i~0 144) (<= ~j~0 18)), 81156#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 18)), 81158#(and (<= (+ ~i~0 ~j~0) 18) (< ~i~0 144))] [2020-10-16 12:27:51,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:51,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:51,414 INFO L87 Difference]: Start difference. First operand 219 states and 597 transitions. Second operand 13 states. [2020-10-16 12:27:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:51,863 INFO L93 Difference]: Finished difference Result 334 states and 880 transitions. [2020-10-16 12:27:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:51,863 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:51,864 INFO L225 Difference]: With dead ends: 334 [2020-10-16 12:27:51,864 INFO L226 Difference]: Without dead ends: 326 [2020-10-16 12:27:51,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:27:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-16 12:27:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 217. [2020-10-16 12:27:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 592 transitions. [2020-10-16 12:27:51,869 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 592 transitions. Word has length 14 [2020-10-16 12:27:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:51,869 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 592 transitions. [2020-10-16 12:27:51,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 592 transitions. [2020-10-16 12:27:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:51,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:51,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:52,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:52,071 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:52,072 INFO L82 PathProgramCache]: Analyzing trace with hash 117427488, now seen corresponding path program 123 times [2020-10-16 12:27:52,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:52,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714232750] [2020-10-16 12:27:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714232750] [2020-10-16 12:27:52,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126236502] [2020-10-16 12:27:52,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:52,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:52,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:52,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:52,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:52,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:52,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [331481322] [2020-10-16 12:27:52,450 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:52,452 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:52,456 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:52,456 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:52,470 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:52,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:52,515 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [82005#(and (< ~i~0 144) (<= ~j~0 21))] [2020-10-16 12:27:52,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:52,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:52,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:52,516 INFO L87 Difference]: Start difference. First operand 217 states and 592 transitions. Second operand 11 states. [2020-10-16 12:27:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:53,107 INFO L93 Difference]: Finished difference Result 323 states and 855 transitions. [2020-10-16 12:27:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:53,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:53,109 INFO L225 Difference]: With dead ends: 323 [2020-10-16 12:27:53,109 INFO L226 Difference]: Without dead ends: 316 [2020-10-16 12:27:53,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-16 12:27:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 215. [2020-10-16 12:27:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:27:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 583 transitions. [2020-10-16 12:27:53,114 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 583 transitions. Word has length 14 [2020-10-16 12:27:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:53,115 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 583 transitions. [2020-10-16 12:27:53,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 583 transitions. [2020-10-16 12:27:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:53,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:53,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:53,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-16 12:27:53,326 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:53,327 INFO L82 PathProgramCache]: Analyzing trace with hash 144470028, now seen corresponding path program 124 times [2020-10-16 12:27:53,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:53,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530683464] [2020-10-16 12:27:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530683464] [2020-10-16 12:27:53,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110806564] [2020-10-16 12:27:53,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:53,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:53,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:53,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:53,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:53,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:53,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [420973014] [2020-10-16 12:27:53,674 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:53,675 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:53,677 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:53,677 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:53,687 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:53,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:53,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:53,688 INFO L87 Difference]: Start difference. First operand 215 states and 583 transitions. Second operand 10 states. [2020-10-16 12:27:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:54,144 INFO L93 Difference]: Finished difference Result 321 states and 824 transitions. [2020-10-16 12:27:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:54,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:54,146 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:27:54,146 INFO L226 Difference]: Without dead ends: 317 [2020-10-16 12:27:54,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-16 12:27:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 217. [2020-10-16 12:27:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 591 transitions. [2020-10-16 12:27:54,150 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 591 transitions. Word has length 14 [2020-10-16 12:27:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:54,150 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 591 transitions. [2020-10-16 12:27:54,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 591 transitions. [2020-10-16 12:27:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:54,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:54,151 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:54,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-16 12:27:54,352 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash 144470989, now seen corresponding path program 125 times [2020-10-16 12:27:54,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:54,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852948488] [2020-10-16 12:27:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852948488] [2020-10-16 12:27:54,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878915131] [2020-10-16 12:27:54,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:54,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:54,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:54,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:54,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:54,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [999881256] [2020-10-16 12:27:54,685 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:54,685 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:54,687 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:54,688 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:54,688 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:54,689 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:54,727 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:54,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:54,773 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [83671#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 19)), 83670#(and (< ~i~0 144) (<= ~j~0 19))] [2020-10-16 12:27:54,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:54,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:54,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:54,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:54,774 INFO L87 Difference]: Start difference. First operand 217 states and 591 transitions. Second operand 12 states. [2020-10-16 12:27:55,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:55,218 INFO L93 Difference]: Finished difference Result 332 states and 874 transitions. [2020-10-16 12:27:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:55,219 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:55,220 INFO L225 Difference]: With dead ends: 332 [2020-10-16 12:27:55,220 INFO L226 Difference]: Without dead ends: 324 [2020-10-16 12:27:55,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=613, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-16 12:27:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 216. [2020-10-16 12:27:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:27:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 588 transitions. [2020-10-16 12:27:55,225 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 588 transitions. Word has length 14 [2020-10-16 12:27:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:55,225 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 588 transitions. [2020-10-16 12:27:55,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 588 transitions. [2020-10-16 12:27:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:55,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:55,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:55,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-10-16 12:27:55,426 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 145133118, now seen corresponding path program 126 times [2020-10-16 12:27:55,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:55,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50208811] [2020-10-16 12:27:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:55,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50208811] [2020-10-16 12:27:55,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972074031] [2020-10-16 12:27:55,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:55,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:55,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:55,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:55,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:55,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:55,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [678652290] [2020-10-16 12:27:55,746 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:55,747 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:55,750 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:55,750 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:55,761 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:55,761 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:55,790 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [84514#(and (<= ~j~0 17) (< ~i~0 144))] [2020-10-16 12:27:55,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:55,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:55,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:55,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:55,791 INFO L87 Difference]: Start difference. First operand 216 states and 588 transitions. Second operand 11 states. [2020-10-16 12:27:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:56,250 INFO L93 Difference]: Finished difference Result 322 states and 854 transitions. [2020-10-16 12:27:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:56,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:56,251 INFO L225 Difference]: With dead ends: 322 [2020-10-16 12:27:56,251 INFO L226 Difference]: Without dead ends: 315 [2020-10-16 12:27:56,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-16 12:27:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 215. [2020-10-16 12:27:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:27:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 583 transitions. [2020-10-16 12:27:56,256 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 583 transitions. Word has length 14 [2020-10-16 12:27:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:56,256 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 583 transitions. [2020-10-16 12:27:56,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 583 transitions. [2020-10-16 12:27:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:56,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:56,257 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:56,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:56,457 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 146056639, now seen corresponding path program 127 times [2020-10-16 12:27:56,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:56,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231783589] [2020-10-16 12:27:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:56,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231783589] [2020-10-16 12:27:56,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538505702] [2020-10-16 12:27:56,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:56,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:56,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:56,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [360989909] [2020-10-16 12:27:56,771 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:56,772 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:56,774 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:56,774 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:56,783 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:56,783 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:56,814 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [85345#(and (< ~i~0 144) (<= ~j~0 16))] [2020-10-16 12:27:56,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:56,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:56,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:56,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:56,815 INFO L87 Difference]: Start difference. First operand 215 states and 583 transitions. Second operand 11 states. [2020-10-16 12:27:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:57,328 INFO L93 Difference]: Finished difference Result 321 states and 841 transitions. [2020-10-16 12:27:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:57,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:57,330 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:27:57,330 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:27:57,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:27:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 213. [2020-10-16 12:27:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-16 12:27:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 573 transitions. [2020-10-16 12:27:57,335 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 573 transitions. Word has length 14 [2020-10-16 12:27:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:57,336 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 573 transitions. [2020-10-16 12:27:57,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 573 transitions. [2020-10-16 12:27:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:57,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:57,336 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:57,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-16 12:27:57,537 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 313362251, now seen corresponding path program 128 times [2020-10-16 12:27:57,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:57,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422089207] [2020-10-16 12:27:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422089207] [2020-10-16 12:27:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592120332] [2020-10-16 12:27:57,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:57,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:57,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:57,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:57,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:57,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:57,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [108184126] [2020-10-16 12:27:57,860 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:57,860 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:57,862 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:27:57,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:57,871 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:57,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:57,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:57,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:57,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:57,872 INFO L87 Difference]: Start difference. First operand 213 states and 573 transitions. Second operand 10 states. [2020-10-16 12:27:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:58,189 INFO L93 Difference]: Finished difference Result 295 states and 748 transitions. [2020-10-16 12:27:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:58,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:58,191 INFO L225 Difference]: With dead ends: 295 [2020-10-16 12:27:58,191 INFO L226 Difference]: Without dead ends: 292 [2020-10-16 12:27:58,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-16 12:27:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 217. [2020-10-16 12:27:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:27:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 587 transitions. [2020-10-16 12:27:58,195 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 587 transitions. Word has length 14 [2020-10-16 12:27:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:58,195 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 587 transitions. [2020-10-16 12:27:58,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 587 transitions. [2020-10-16 12:27:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:58,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:58,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:58,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:58,397 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 313363212, now seen corresponding path program 129 times [2020-10-16 12:27:58,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:58,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849881817] [2020-10-16 12:27:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849881817] [2020-10-16 12:27:58,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587316366] [2020-10-16 12:27:58,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:58,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:58,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:58,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:58,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:58,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1755208130] [2020-10-16 12:27:58,736 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:58,737 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:58,739 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:27:58,739 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:58,751 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:58,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:58,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:58,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:58,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:58,752 INFO L87 Difference]: Start difference. First operand 217 states and 587 transitions. Second operand 10 states. [2020-10-16 12:27:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:59,070 INFO L93 Difference]: Finished difference Result 300 states and 765 transitions. [2020-10-16 12:27:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:59,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:59,071 INFO L225 Difference]: With dead ends: 300 [2020-10-16 12:27:59,071 INFO L226 Difference]: Without dead ends: 296 [2020-10-16 12:27:59,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:27:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-16 12:27:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 216. [2020-10-16 12:27:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:27:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 584 transitions. [2020-10-16 12:27:59,076 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 584 transitions. Word has length 14 [2020-10-16 12:27:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:59,076 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 584 transitions. [2020-10-16 12:27:59,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 584 transitions. [2020-10-16 12:27:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:59,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:59,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:59,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:59,280 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 313392042, now seen corresponding path program 130 times [2020-10-16 12:27:59,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:59,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031113664] [2020-10-16 12:27:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:59,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031113664] [2020-10-16 12:27:59,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416102176] [2020-10-16 12:27:59,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:59,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:59,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:59,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:59,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:00,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:00,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [556714916] [2020-10-16 12:28:00,013 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:00,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:00,016 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:00,016 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:00,027 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:00,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:00,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:00,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:00,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:00,028 INFO L87 Difference]: Start difference. First operand 216 states and 584 transitions. Second operand 10 states. [2020-10-16 12:28:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:00,345 INFO L93 Difference]: Finished difference Result 316 states and 803 transitions. [2020-10-16 12:28:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:00,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:00,346 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:28:00,346 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:28:00,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:28:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:28:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 217. [2020-10-16 12:28:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:28:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 588 transitions. [2020-10-16 12:28:00,351 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 588 transitions. Word has length 14 [2020-10-16 12:28:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:00,351 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 588 transitions. [2020-10-16 12:28:00,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 588 transitions. [2020-10-16 12:28:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:00,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:00,352 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:00,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:00,553 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:00,553 INFO L82 PathProgramCache]: Analyzing trace with hash 313393003, now seen corresponding path program 131 times [2020-10-16 12:28:00,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:00,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586435406] [2020-10-16 12:28:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586435406] [2020-10-16 12:28:00,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751839634] [2020-10-16 12:28:00,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:00,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:00,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:00,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:00,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:00,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [283179345] [2020-10-16 12:28:00,904 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:00,904 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:00,906 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:00,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:00,917 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:00,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:00,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:00,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:00,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:00,918 INFO L87 Difference]: Start difference. First operand 217 states and 588 transitions. Second operand 10 states. [2020-10-16 12:28:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:01,235 INFO L93 Difference]: Finished difference Result 310 states and 791 transitions. [2020-10-16 12:28:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:01,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:01,236 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:28:01,236 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:28:01,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:28:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 212. [2020-10-16 12:28:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:28:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 573 transitions. [2020-10-16 12:28:01,241 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 573 transitions. Word has length 14 [2020-10-16 12:28:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:01,241 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 573 transitions. [2020-10-16 12:28:01,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 573 transitions. [2020-10-16 12:28:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:01,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:01,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:01,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:01,444 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:01,445 INFO L82 PathProgramCache]: Analyzing trace with hash 314285772, now seen corresponding path program 132 times [2020-10-16 12:28:01,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:01,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316457471] [2020-10-16 12:28:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316457471] [2020-10-16 12:28:01,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115522620] [2020-10-16 12:28:01,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:01,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:01,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:01,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:01,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:01,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1286399816] [2020-10-16 12:28:01,768 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:01,769 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:01,771 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:01,771 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:01,781 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:01,781 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:01,814 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [89404#(and (< ~i~0 144) (<= (+ ~i~0 (* 3 ~j~0)) 18))] [2020-10-16 12:28:01,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:01,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:01,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:01,815 INFO L87 Difference]: Start difference. First operand 212 states and 573 transitions. Second operand 11 states. [2020-10-16 12:28:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:02,200 INFO L93 Difference]: Finished difference Result 317 states and 801 transitions. [2020-10-16 12:28:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:02,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:02,201 INFO L225 Difference]: With dead ends: 317 [2020-10-16 12:28:02,202 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:28:02,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:28:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 216. [2020-10-16 12:28:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:28:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 587 transitions. [2020-10-16 12:28:02,206 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 587 transitions. Word has length 14 [2020-10-16 12:28:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:02,207 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 587 transitions. [2020-10-16 12:28:02,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 587 transitions. [2020-10-16 12:28:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:02,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:02,207 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:02,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:02,408 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash 314286733, now seen corresponding path program 133 times [2020-10-16 12:28:02,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:02,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191724583] [2020-10-16 12:28:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:02,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191724583] [2020-10-16 12:28:02,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265840756] [2020-10-16 12:28:02,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:02,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:02,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:02,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:02,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [427643590] [2020-10-16 12:28:02,744 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:02,746 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:02,748 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:02,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:02,764 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:02,764 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:02,795 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [90230#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 21) (< ~i~0 144))] [2020-10-16 12:28:02,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:02,797 INFO L87 Difference]: Start difference. First operand 216 states and 587 transitions. Second operand 11 states. [2020-10-16 12:28:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:03,178 INFO L93 Difference]: Finished difference Result 318 states and 807 transitions. [2020-10-16 12:28:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:03,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:03,180 INFO L225 Difference]: With dead ends: 318 [2020-10-16 12:28:03,180 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:28:03,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:28:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 212. [2020-10-16 12:28:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:28:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 575 transitions. [2020-10-16 12:28:03,185 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 575 transitions. Word has length 14 [2020-10-16 12:28:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:03,185 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 575 transitions. [2020-10-16 12:28:03,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 575 transitions. [2020-10-16 12:28:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:03,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:03,185 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:03,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-16 12:28:03,386 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash 950591741, now seen corresponding path program 134 times [2020-10-16 12:28:03,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:03,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603819802] [2020-10-16 12:28:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:03,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603819802] [2020-10-16 12:28:03,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993242286] [2020-10-16 12:28:03,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:03,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:03,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:03,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:03,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:03,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:03,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:03,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [37656871] [2020-10-16 12:28:03,709 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:03,710 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:03,712 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:03,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:03,723 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:03,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:03,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:03,724 INFO L87 Difference]: Start difference. First operand 212 states and 575 transitions. Second operand 10 states. [2020-10-16 12:28:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:04,082 INFO L93 Difference]: Finished difference Result 300 states and 760 transitions. [2020-10-16 12:28:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:04,083 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:04,085 INFO L225 Difference]: With dead ends: 300 [2020-10-16 12:28:04,085 INFO L226 Difference]: Without dead ends: 297 [2020-10-16 12:28:04,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-16 12:28:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 215. [2020-10-16 12:28:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:28:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 586 transitions. [2020-10-16 12:28:04,089 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 586 transitions. Word has length 14 [2020-10-16 12:28:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:04,090 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 586 transitions. [2020-10-16 12:28:04,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 586 transitions. [2020-10-16 12:28:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:04,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:04,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-16 12:28:04,291 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:04,292 INFO L82 PathProgramCache]: Analyzing trace with hash 950592702, now seen corresponding path program 135 times [2020-10-16 12:28:04,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:04,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739405083] [2020-10-16 12:28:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739405083] [2020-10-16 12:28:04,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869608186] [2020-10-16 12:28:04,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:04,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:04,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:04,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:04,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [816681526] [2020-10-16 12:28:04,623 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:04,624 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:04,626 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:04,626 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:04,637 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:04,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:04,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:04,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:04,638 INFO L87 Difference]: Start difference. First operand 215 states and 586 transitions. Second operand 10 states. [2020-10-16 12:28:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:05,014 INFO L93 Difference]: Finished difference Result 305 states and 777 transitions. [2020-10-16 12:28:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:05,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:05,015 INFO L225 Difference]: With dead ends: 305 [2020-10-16 12:28:05,016 INFO L226 Difference]: Without dead ends: 301 [2020-10-16 12:28:05,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:28:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-16 12:28:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 214. [2020-10-16 12:28:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 12:28:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 583 transitions. [2020-10-16 12:28:05,020 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 583 transitions. Word has length 14 [2020-10-16 12:28:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:05,020 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 583 transitions. [2020-10-16 12:28:05,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 583 transitions. [2020-10-16 12:28:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:05,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:05,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:05,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-16 12:28:05,222 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 950621532, now seen corresponding path program 136 times [2020-10-16 12:28:05,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:05,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741596217] [2020-10-16 12:28:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:05,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741596217] [2020-10-16 12:28:05,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958572566] [2020-10-16 12:28:05,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:05,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:05,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:05,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:05,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:05,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:05,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:05,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1715260349] [2020-10-16 12:28:05,622 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:05,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:05,625 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:05,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:05,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:05,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:05,675 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [92660#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 144))] [2020-10-16 12:28:05,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:05,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:05,676 INFO L87 Difference]: Start difference. First operand 214 states and 583 transitions. Second operand 11 states. [2020-10-16 12:28:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:06,122 INFO L93 Difference]: Finished difference Result 332 states and 847 transitions. [2020-10-16 12:28:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:28:06,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:06,124 INFO L225 Difference]: With dead ends: 332 [2020-10-16 12:28:06,124 INFO L226 Difference]: Without dead ends: 327 [2020-10-16 12:28:06,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-16 12:28:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 220. [2020-10-16 12:28:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 12:28:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 607 transitions. [2020-10-16 12:28:06,130 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 607 transitions. Word has length 14 [2020-10-16 12:28:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:06,131 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 607 transitions. [2020-10-16 12:28:06,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 607 transitions. [2020-10-16 12:28:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:06,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:06,132 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:06,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-16 12:28:06,335 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:06,335 INFO L82 PathProgramCache]: Analyzing trace with hash 950622493, now seen corresponding path program 137 times [2020-10-16 12:28:06,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:06,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670174750] [2020-10-16 12:28:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:06,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670174750] [2020-10-16 12:28:06,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983671287] [2020-10-16 12:28:06,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:06,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:06,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:06,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:06,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:06,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:06,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:06,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1983046447] [2020-10-16 12:28:06,677 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:06,677 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:06,679 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:06,680 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:06,687 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:06,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:06,722 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:06,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:06,758 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:06,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:06,796 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [93513#(and (<= ~j~0 17) (< ~i~0 144)), 93515#(and (< ~i~0 144) (<= (+ (* 2 ~i~0) ~j~0) 17)), 93514#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 17))] [2020-10-16 12:28:06,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:28:06,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:28:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:06,797 INFO L87 Difference]: Start difference. First operand 220 states and 607 transitions. Second operand 13 states. [2020-10-16 12:28:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:07,269 INFO L93 Difference]: Finished difference Result 346 states and 908 transitions. [2020-10-16 12:28:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:07,269 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:28:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:07,270 INFO L225 Difference]: With dead ends: 346 [2020-10-16 12:28:07,270 INFO L226 Difference]: Without dead ends: 336 [2020-10-16 12:28:07,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-16 12:28:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 217. [2020-10-16 12:28:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-16 12:28:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 598 transitions. [2020-10-16 12:28:07,276 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 598 transitions. Word has length 14 [2020-10-16 12:28:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:07,276 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 598 transitions. [2020-10-16 12:28:07,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:28:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 598 transitions. [2020-10-16 12:28:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:07,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:07,277 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:07,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:07,487 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash 971147531, now seen corresponding path program 138 times [2020-10-16 12:28:07,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:07,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008445391] [2020-10-16 12:28:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:07,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008445391] [2020-10-16 12:28:07,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989513126] [2020-10-16 12:28:07,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:07,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:28:07,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:07,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:07,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:07,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:07,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:07,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [379024509] [2020-10-16 12:28:07,794 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:07,795 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:07,797 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:07,797 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:07,809 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:07,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:07,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:07,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:07,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:07,810 INFO L87 Difference]: Start difference. First operand 217 states and 598 transitions. Second operand 10 states. [2020-10-16 12:28:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:08,235 INFO L93 Difference]: Finished difference Result 304 states and 780 transitions. [2020-10-16 12:28:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:08,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:08,237 INFO L225 Difference]: With dead ends: 304 [2020-10-16 12:28:08,237 INFO L226 Difference]: Without dead ends: 301 [2020-10-16 12:28:08,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-16 12:28:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 219. [2020-10-16 12:28:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-16 12:28:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 606 transitions. [2020-10-16 12:28:08,241 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 606 transitions. Word has length 14 [2020-10-16 12:28:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:08,242 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 606 transitions. [2020-10-16 12:28:08,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 606 transitions. [2020-10-16 12:28:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:08,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:08,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:08,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2020-10-16 12:28:08,443 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:08,444 INFO L82 PathProgramCache]: Analyzing trace with hash 971148492, now seen corresponding path program 139 times [2020-10-16 12:28:08,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:08,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4766411] [2020-10-16 12:28:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4766411] [2020-10-16 12:28:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859204451] [2020-10-16 12:28:08,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:08,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:08,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:08,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:08,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1597792019] [2020-10-16 12:28:08,758 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:08,759 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:08,761 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:08,761 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:08,768 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:08,769 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:08,801 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:08,801 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:08,844 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [95195#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 16)), 95194#(and (< ~i~0 144) (<= ~j~0 16))] [2020-10-16 12:28:08,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:08,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:08,845 INFO L87 Difference]: Start difference. First operand 219 states and 606 transitions. Second operand 12 states. [2020-10-16 12:28:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:09,309 INFO L93 Difference]: Finished difference Result 329 states and 864 transitions. [2020-10-16 12:28:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:09,310 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:09,311 INFO L225 Difference]: With dead ends: 329 [2020-10-16 12:28:09,312 INFO L226 Difference]: Without dead ends: 322 [2020-10-16 12:28:09,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-16 12:28:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 218. [2020-10-16 12:28:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:28:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 603 transitions. [2020-10-16 12:28:09,317 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 603 transitions. Word has length 14 [2020-10-16 12:28:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:09,317 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 603 transitions. [2020-10-16 12:28:09,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 603 transitions. [2020-10-16 12:28:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:09,318 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:09,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:09,519 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:09,528 INFO L82 PathProgramCache]: Analyzing trace with hash 971810621, now seen corresponding path program 140 times [2020-10-16 12:28:09,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:09,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223430077] [2020-10-16 12:28:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:09,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223430077] [2020-10-16 12:28:09,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020583094] [2020-10-16 12:28:09,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:09,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:09,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:09,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:09,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:09,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:09,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [65434233] [2020-10-16 12:28:09,831 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:09,832 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:09,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:09,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:09,835 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:09,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:09,879 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [96039#(and (<= ~j~0 11) (< ~i~0 144))] [2020-10-16 12:28:09,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:09,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:09,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:09,880 INFO L87 Difference]: Start difference. First operand 218 states and 603 transitions. Second operand 11 states. [2020-10-16 12:28:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:10,351 INFO L93 Difference]: Finished difference Result 313 states and 817 transitions. [2020-10-16 12:28:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:10,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:10,353 INFO L225 Difference]: With dead ends: 313 [2020-10-16 12:28:10,353 INFO L226 Difference]: Without dead ends: 300 [2020-10-16 12:28:10,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-16 12:28:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 215. [2020-10-16 12:28:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-16 12:28:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 592 transitions. [2020-10-16 12:28:10,358 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 592 transitions. Word has length 14 [2020-10-16 12:28:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:10,358 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 592 transitions. [2020-10-16 12:28:10,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 592 transitions. [2020-10-16 12:28:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:10,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:10,359 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:10,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:10,560 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash 972734142, now seen corresponding path program 141 times [2020-10-16 12:28:10,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:10,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295265234] [2020-10-16 12:28:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295265234] [2020-10-16 12:28:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627542813] [2020-10-16 12:28:10,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:10,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:10,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:10,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:10,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:10,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:10,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:10,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [328092326] [2020-10-16 12:28:10,930 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:10,931 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:10,934 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:10,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:10,951 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:10,951 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:10,981 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [96861#(and (< ~i~0 144) (<= ~j~0 19))] [2020-10-16 12:28:10,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:10,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:10,982 INFO L87 Difference]: Start difference. First operand 215 states and 592 transitions. Second operand 11 states. [2020-10-16 12:28:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:11,487 INFO L93 Difference]: Finished difference Result 342 states and 907 transitions. [2020-10-16 12:28:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:11,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:11,489 INFO L225 Difference]: With dead ends: 342 [2020-10-16 12:28:11,489 INFO L226 Difference]: Without dead ends: 333 [2020-10-16 12:28:11,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-16 12:28:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 212. [2020-10-16 12:28:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:28:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-10-16 12:28:11,495 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 14 [2020-10-16 12:28:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:11,495 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-10-16 12:28:11,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-10-16 12:28:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:11,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:11,496 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:11,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable153 [2020-10-16 12:28:11,707 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 979250683, now seen corresponding path program 142 times [2020-10-16 12:28:11,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:11,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41096386] [2020-10-16 12:28:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:11,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41096386] [2020-10-16 12:28:11,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471111379] [2020-10-16 12:28:11,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:11,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:11,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:11,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:11,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:12,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:12,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:12,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1924527718] [2020-10-16 12:28:12,037 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:12,039 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:12,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:12,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:12,073 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:12,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:12,118 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [97707#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 144)), 97706#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 19))] [2020-10-16 12:28:12,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:12,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:12,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:12,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:12,119 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 12 states. [2020-10-16 12:28:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:12,588 INFO L93 Difference]: Finished difference Result 324 states and 820 transitions. [2020-10-16 12:28:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:12,588 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:12,589 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:28:12,589 INFO L226 Difference]: Without dead ends: 318 [2020-10-16 12:28:12,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-16 12:28:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 210. [2020-10-16 12:28:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-16 12:28:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 576 transitions. [2020-10-16 12:28:12,593 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 576 transitions. Word has length 14 [2020-10-16 12:28:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:12,593 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 576 transitions. [2020-10-16 12:28:12,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 576 transitions. [2020-10-16 12:28:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:12,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:12,594 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:12,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:12,795 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:12,795 INFO L82 PathProgramCache]: Analyzing trace with hash 979251644, now seen corresponding path program 143 times [2020-10-16 12:28:12,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:12,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316144898] [2020-10-16 12:28:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:12,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316144898] [2020-10-16 12:28:12,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466955485] [2020-10-16 12:28:12,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:12,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:12,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:12,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:12,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:13,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:13,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:13,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1440574162] [2020-10-16 12:28:13,109 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:13,110 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:13,113 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:13,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:13,113 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:13,114 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:13,146 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:13,147 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:13,195 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:13,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:13,258 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [98531#(and (<= (+ ~i~0 ~j~0) 14) (< ~i~0 144)), 98530#(and (<= ~j~0 14) (< ~i~0 144)), 98533#(and (<= (+ (* 4 ~i~0) ~j~0) 14) (= ULTIMATE.start_main_~condI~0 0)), 98532#(and (< ~i~0 144) (<= (+ (* 2 ~i~0) ~j~0) 14))] [2020-10-16 12:28:13,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:28:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:28:13,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:13,259 INFO L87 Difference]: Start difference. First operand 210 states and 576 transitions. Second operand 14 states. [2020-10-16 12:28:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:13,740 INFO L93 Difference]: Finished difference Result 319 states and 824 transitions. [2020-10-16 12:28:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:13,741 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:28:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:13,741 INFO L225 Difference]: With dead ends: 319 [2020-10-16 12:28:13,741 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:28:13,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:28:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:28:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 207. [2020-10-16 12:28:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-16 12:28:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 568 transitions. [2020-10-16 12:28:13,745 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 568 transitions. Word has length 14 [2020-10-16 12:28:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:13,746 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 568 transitions. [2020-10-16 12:28:13,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:28:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 568 transitions. [2020-10-16 12:28:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:13,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:13,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-16 12:28:13,951 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash 999776682, now seen corresponding path program 144 times [2020-10-16 12:28:13,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:13,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782370032] [2020-10-16 12:28:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:14,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782370032] [2020-10-16 12:28:14,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709958181] [2020-10-16 12:28:14,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:14,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:14,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:14,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:14,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:14,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:14,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [642744482] [2020-10-16 12:28:14,264 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:14,265 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:14,267 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:14,267 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:14,283 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:14,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:14,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:14,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:14,284 INFO L87 Difference]: Start difference. First operand 207 states and 568 transitions. Second operand 10 states. [2020-10-16 12:28:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:14,757 INFO L93 Difference]: Finished difference Result 321 states and 826 transitions. [2020-10-16 12:28:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:14,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:14,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:14,759 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:28:14,759 INFO L226 Difference]: Without dead ends: 316 [2020-10-16 12:28:14,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-16 12:28:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 211. [2020-10-16 12:28:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-16 12:28:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 584 transitions. [2020-10-16 12:28:14,764 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 584 transitions. Word has length 14 [2020-10-16 12:28:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:14,764 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 584 transitions. [2020-10-16 12:28:14,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 584 transitions. [2020-10-16 12:28:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:14,765 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:14,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-16 12:28:14,966 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:14,967 INFO L82 PathProgramCache]: Analyzing trace with hash 999777643, now seen corresponding path program 145 times [2020-10-16 12:28:14,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:14,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615349485] [2020-10-16 12:28:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615349485] [2020-10-16 12:28:15,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117759619] [2020-10-16 12:28:15,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:15,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:15,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:15,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:15,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [923315191] [2020-10-16 12:28:15,268 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:15,269 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:15,272 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:15,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:15,273 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:15,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:15,305 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:15,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:15,390 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [100167#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 21)), 100166#(and (< ~i~0 144) (<= ~j~0 21))] [2020-10-16 12:28:15,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:15,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:15,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:15,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:15,392 INFO L87 Difference]: Start difference. First operand 211 states and 584 transitions. Second operand 12 states. [2020-10-16 12:28:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:16,058 INFO L93 Difference]: Finished difference Result 328 states and 864 transitions. [2020-10-16 12:28:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:16,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:16,061 INFO L225 Difference]: With dead ends: 328 [2020-10-16 12:28:16,061 INFO L226 Difference]: Without dead ends: 318 [2020-10-16 12:28:16,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=612, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-16 12:28:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 208. [2020-10-16 12:28:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-16 12:28:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 573 transitions. [2020-10-16 12:28:16,070 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 573 transitions. Word has length 14 [2020-10-16 12:28:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:16,070 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 573 transitions. [2020-10-16 12:28:16,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 573 transitions. [2020-10-16 12:28:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:16,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:16,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:16,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-16 12:28:16,287 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1000439772, now seen corresponding path program 146 times [2020-10-16 12:28:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330868432] [2020-10-16 12:28:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330868432] [2020-10-16 12:28:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504397782] [2020-10-16 12:28:16,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:16,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:16,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:16,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:16,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:16,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1733741832] [2020-10-16 12:28:16,608 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:16,611 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:16,613 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:16,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:16,621 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:16,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:16,658 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [100990#(and (< ~i~0 144) (<= ~j~0 18))] [2020-10-16 12:28:16,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:16,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:16,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:16,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:16,659 INFO L87 Difference]: Start difference. First operand 208 states and 573 transitions. Second operand 11 states. [2020-10-16 12:28:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:17,170 INFO L93 Difference]: Finished difference Result 327 states and 868 transitions. [2020-10-16 12:28:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:17,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:17,171 INFO L225 Difference]: With dead ends: 327 [2020-10-16 12:28:17,171 INFO L226 Difference]: Without dead ends: 318 [2020-10-16 12:28:17,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-16 12:28:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 205. [2020-10-16 12:28:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:28:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 566 transitions. [2020-10-16 12:28:17,176 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 566 transitions. Word has length 14 [2020-10-16 12:28:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:17,176 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 566 transitions. [2020-10-16 12:28:17,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 566 transitions. [2020-10-16 12:28:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:17,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:17,176 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:17,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-16 12:28:17,377 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1001363293, now seen corresponding path program 147 times [2020-10-16 12:28:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:17,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010057256] [2020-10-16 12:28:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010057256] [2020-10-16 12:28:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412264191] [2020-10-16 12:28:17,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:17,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:17,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:17,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:17,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:17,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:17,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:17,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1133129932] [2020-10-16 12:28:17,732 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:17,733 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:17,736 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:17,737 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:17,748 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:17,749 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:17,784 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [101806#(and (< ~i~0 144) (<= ~j~0 19))] [2020-10-16 12:28:17,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:17,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:17,785 INFO L87 Difference]: Start difference. First operand 205 states and 566 transitions. Second operand 11 states. [2020-10-16 12:28:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:18,303 INFO L93 Difference]: Finished difference Result 316 states and 833 transitions. [2020-10-16 12:28:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:18,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:18,305 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:28:18,305 INFO L226 Difference]: Without dead ends: 306 [2020-10-16 12:28:18,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-16 12:28:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 204. [2020-10-16 12:28:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:28:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 554 transitions. [2020-10-16 12:28:18,310 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 554 transitions. Word has length 14 [2020-10-16 12:28:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:18,311 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 554 transitions. [2020-10-16 12:28:18,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 554 transitions. [2020-10-16 12:28:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:18,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:18,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:18,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:18,522 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:18,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1838095422, now seen corresponding path program 148 times [2020-10-16 12:28:18,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:18,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917617052] [2020-10-16 12:28:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:18,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917617052] [2020-10-16 12:28:18,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774992290] [2020-10-16 12:28:18,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:18,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:18,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:18,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:18,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:18,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [149888632] [2020-10-16 12:28:18,910 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:18,911 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:18,913 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:18,914 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:18,930 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:18,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:18,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:18,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:18,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:18,931 INFO L87 Difference]: Start difference. First operand 204 states and 554 transitions. Second operand 10 states. [2020-10-16 12:28:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:19,256 INFO L93 Difference]: Finished difference Result 305 states and 770 transitions. [2020-10-16 12:28:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:19,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:19,258 INFO L225 Difference]: With dead ends: 305 [2020-10-16 12:28:19,258 INFO L226 Difference]: Without dead ends: 301 [2020-10-16 12:28:19,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:28:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-16 12:28:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 205. [2020-10-16 12:28:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:28:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 557 transitions. [2020-10-16 12:28:19,270 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 557 transitions. Word has length 14 [2020-10-16 12:28:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:19,270 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 557 transitions. [2020-10-16 12:28:19,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 557 transitions. [2020-10-16 12:28:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:19,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:19,271 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:19,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:19,472 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1838096383, now seen corresponding path program 149 times [2020-10-16 12:28:19,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:19,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174762796] [2020-10-16 12:28:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174762796] [2020-10-16 12:28:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275627230] [2020-10-16 12:28:19,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:19,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:28:19,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:19,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:19,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:20,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:20,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1176553349] [2020-10-16 12:28:20,867 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:20,867 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:20,869 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:20,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:20,882 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:20,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:20,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:20,883 INFO L87 Difference]: Start difference. First operand 205 states and 557 transitions. Second operand 10 states. [2020-10-16 12:28:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:21,191 INFO L93 Difference]: Finished difference Result 307 states and 779 transitions. [2020-10-16 12:28:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:21,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:21,192 INFO L225 Difference]: With dead ends: 307 [2020-10-16 12:28:21,192 INFO L226 Difference]: Without dead ends: 302 [2020-10-16 12:28:21,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-16 12:28:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 203. [2020-10-16 12:28:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-16 12:28:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 551 transitions. [2020-10-16 12:28:21,197 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 551 transitions. Word has length 14 [2020-10-16 12:28:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:21,197 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 551 transitions. [2020-10-16 12:28:21,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 551 transitions. [2020-10-16 12:28:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:21,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:21,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:21,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:21,399 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1858651212, now seen corresponding path program 150 times [2020-10-16 12:28:21,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:21,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671380015] [2020-10-16 12:28:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:21,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671380015] [2020-10-16 12:28:21,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47397862] [2020-10-16 12:28:21,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:21,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:21,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:21,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:21,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:21,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [372373509] [2020-10-16 12:28:21,750 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:21,751 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:21,753 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:21,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:21,765 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:21,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:21,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:21,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:21,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:21,765 INFO L87 Difference]: Start difference. First operand 203 states and 551 transitions. Second operand 10 states. [2020-10-16 12:28:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:22,136 INFO L93 Difference]: Finished difference Result 308 states and 779 transitions. [2020-10-16 12:28:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:22,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:22,137 INFO L225 Difference]: With dead ends: 308 [2020-10-16 12:28:22,137 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:28:22,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:28:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:28:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 205. [2020-10-16 12:28:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-16 12:28:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 559 transitions. [2020-10-16 12:28:22,142 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 559 transitions. Word has length 14 [2020-10-16 12:28:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:22,142 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 559 transitions. [2020-10-16 12:28:22,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 559 transitions. [2020-10-16 12:28:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:22,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:22,143 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:22,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:22,344 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1858652173, now seen corresponding path program 151 times [2020-10-16 12:28:22,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:22,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004715648] [2020-10-16 12:28:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:22,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004715648] [2020-10-16 12:28:22,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44287041] [2020-10-16 12:28:22,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:22,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:22,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:22,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:22,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:22,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [129249085] [2020-10-16 12:28:22,728 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:22,728 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:22,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:22,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:22,731 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,773 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,819 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [104971#(and (<= ~j~0 17) (< ~i~0 144)), 104972#(and (< ~i~0 144) (<= (+ ~i~0 ~j~0) 17))] [2020-10-16 12:28:22,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:22,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:22,820 INFO L87 Difference]: Start difference. First operand 205 states and 559 transitions. Second operand 12 states. [2020-10-16 12:28:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:23,250 INFO L93 Difference]: Finished difference Result 331 states and 867 transitions. [2020-10-16 12:28:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:23,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:23,252 INFO L225 Difference]: With dead ends: 331 [2020-10-16 12:28:23,252 INFO L226 Difference]: Without dead ends: 323 [2020-10-16 12:28:23,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-16 12:28:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 204. [2020-10-16 12:28:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:28:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 556 transitions. [2020-10-16 12:28:23,257 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 556 transitions. Word has length 14 [2020-10-16 12:28:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:23,258 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 556 transitions. [2020-10-16 12:28:23,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 556 transitions. [2020-10-16 12:28:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:23,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:23,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:23,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:23,461 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1859314302, now seen corresponding path program 152 times [2020-10-16 12:28:23,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:23,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818586416] [2020-10-16 12:28:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818586416] [2020-10-16 12:28:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682442429] [2020-10-16 12:28:23,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:23,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:23,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:23,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:23,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:23,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2046213934] [2020-10-16 12:28:23,825 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:23,825 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:23,827 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:23,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:23,841 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:23,841 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:23,872 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [105788#(and (< ~i~0 144) (<= ~j~0 13))] [2020-10-16 12:28:23,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:23,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:23,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:23,873 INFO L87 Difference]: Start difference. First operand 204 states and 556 transitions. Second operand 11 states. [2020-10-16 12:28:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:24,427 INFO L93 Difference]: Finished difference Result 323 states and 845 transitions. [2020-10-16 12:28:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:24,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:24,429 INFO L225 Difference]: With dead ends: 323 [2020-10-16 12:28:24,429 INFO L226 Difference]: Without dead ends: 316 [2020-10-16 12:28:24,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-16 12:28:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 204. [2020-10-16 12:28:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-16 12:28:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 548 transitions. [2020-10-16 12:28:24,439 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 548 transitions. Word has length 14 [2020-10-16 12:28:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:24,440 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 548 transitions. [2020-10-16 12:28:24,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 548 transitions. [2020-10-16 12:28:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:24,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:24,441 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:24,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:24,642 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash 163688120, now seen corresponding path program 7 times [2020-10-16 12:28:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:24,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250655649] [2020-10-16 12:28:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:24,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250655649] [2020-10-16 12:28:24,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365455192] [2020-10-16 12:28:24,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:28:24,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:28:25,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2020-10-16 12:28:25,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482630517] [2020-10-16 12:28:25,035 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:25,036 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:25,039 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:25,039 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:25,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:25,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:28:25,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:28:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:25,124 INFO L87 Difference]: Start difference. First operand 204 states and 548 transitions. Second operand 8 states. [2020-10-16 12:28:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:25,150 INFO L93 Difference]: Finished difference Result 255 states and 625 transitions. [2020-10-16 12:28:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:28:25,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-16 12:28:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:25,152 INFO L225 Difference]: With dead ends: 255 [2020-10-16 12:28:25,152 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 12:28:25,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 12:28:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-16 12:28:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:28:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 535 transitions. [2020-10-16 12:28:25,155 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 535 transitions. Word has length 14 [2020-10-16 12:28:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:25,155 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 535 transitions. [2020-10-16 12:28:25,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:28:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 535 transitions. [2020-10-16 12:28:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:25,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:25,156 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:25,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:25,356 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:25,357 INFO L82 PathProgramCache]: Analyzing trace with hash 491278210, now seen corresponding path program 153 times [2020-10-16 12:28:25,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810230310] [2020-10-16 12:28:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810230310] [2020-10-16 12:28:25,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627266670] [2020-10-16 12:28:25,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:25,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:25,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:25,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:25,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:25,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:25,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [807583959] [2020-10-16 12:28:25,806 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:25,807 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:25,811 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:28:25,811 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:25,833 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:25,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:25,839 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:25,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:25,847 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:25,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:25,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:25,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:25,848 INFO L87 Difference]: Start difference. First operand 216 states and 535 transitions. Second operand 11 states. [2020-10-16 12:28:25,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:25,939 INFO L93 Difference]: Finished difference Result 268 states and 633 transitions. [2020-10-16 12:28:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:25,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:25,941 INFO L225 Difference]: With dead ends: 268 [2020-10-16 12:28:25,941 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 12:28:25,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 12:28:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-10-16 12:28:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-16 12:28:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 563 transitions. [2020-10-16 12:28:25,945 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 563 transitions. Word has length 15 [2020-10-16 12:28:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:25,945 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 563 transitions. [2020-10-16 12:28:25,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 563 transitions. [2020-10-16 12:28:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:25,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:25,946 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:26,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-16 12:28:26,146 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash 491307040, now seen corresponding path program 154 times [2020-10-16 12:28:26,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:26,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857197861] [2020-10-16 12:28:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:26,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857197861] [2020-10-16 12:28:26,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002047841] [2020-10-16 12:28:26,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:26,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:26,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:27,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:27,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [402847775] [2020-10-16 12:28:27,063 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:27,063 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:27,066 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:28:27,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:27,086 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,086 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,093 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,093 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,100 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:27,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:27,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:27,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:27,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:27,101 INFO L87 Difference]: Start difference. First operand 227 states and 563 transitions. Second operand 11 states. [2020-10-16 12:28:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:27,243 INFO L93 Difference]: Finished difference Result 275 states and 647 transitions. [2020-10-16 12:28:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:27,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:27,244 INFO L225 Difference]: With dead ends: 275 [2020-10-16 12:28:27,244 INFO L226 Difference]: Without dead ends: 273 [2020-10-16 12:28:27,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-16 12:28:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 228. [2020-10-16 12:28:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-16 12:28:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 566 transitions. [2020-10-16 12:28:27,248 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 566 transitions. Word has length 15 [2020-10-16 12:28:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:27,248 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 566 transitions. [2020-10-16 12:28:27,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 566 transitions. [2020-10-16 12:28:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:27,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:27,249 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:27,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-16 12:28:27,450 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash 491308001, now seen corresponding path program 155 times [2020-10-16 12:28:27,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:27,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314751987] [2020-10-16 12:28:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314751987] [2020-10-16 12:28:27,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106770227] [2020-10-16 12:28:27,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:27,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:27,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:27,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:27,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:27,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [590541208] [2020-10-16 12:28:27,893 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:27,895 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:27,899 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:28:27,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:27,935 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,936 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,941 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,953 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:27,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:27,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:27,954 INFO L87 Difference]: Start difference. First operand 228 states and 566 transitions. Second operand 11 states. [2020-10-16 12:28:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:28,149 INFO L93 Difference]: Finished difference Result 287 states and 674 transitions. [2020-10-16 12:28:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:28,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:28,151 INFO L225 Difference]: With dead ends: 287 [2020-10-16 12:28:28,152 INFO L226 Difference]: Without dead ends: 284 [2020-10-16 12:28:28,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-16 12:28:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2020-10-16 12:28:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-16 12:28:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 569 transitions. [2020-10-16 12:28:28,159 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 569 transitions. Word has length 15 [2020-10-16 12:28:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:28,160 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 569 transitions. [2020-10-16 12:28:28,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 569 transitions. [2020-10-16 12:28:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:28,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:28,161 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:28,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-16 12:28:28,375 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash 492200770, now seen corresponding path program 156 times [2020-10-16 12:28:28,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:28,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606612583] [2020-10-16 12:28:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:28,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606612583] [2020-10-16 12:28:28,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764863279] [2020-10-16 12:28:28,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:28,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:28,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:28,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:28,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:28,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:28,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1062311657] [2020-10-16 12:28:28,914 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:28,915 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:28,918 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:28,918 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:28,927 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:28,928 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:28,945 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:28,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:28,951 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:28,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:28,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:28,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:28,952 INFO L87 Difference]: Start difference. First operand 229 states and 569 transitions. Second operand 11 states. [2020-10-16 12:28:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:29,130 INFO L93 Difference]: Finished difference Result 279 states and 657 transitions. [2020-10-16 12:28:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:29,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:29,132 INFO L225 Difference]: With dead ends: 279 [2020-10-16 12:28:29,132 INFO L226 Difference]: Without dead ends: 277 [2020-10-16 12:28:29,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-16 12:28:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 231. [2020-10-16 12:28:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-16 12:28:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 575 transitions. [2020-10-16 12:28:29,136 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 575 transitions. Word has length 15 [2020-10-16 12:28:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:29,136 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 575 transitions. [2020-10-16 12:28:29,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 575 transitions. [2020-10-16 12:28:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:29,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:29,137 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:29,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-16 12:28:29,338 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:29,339 INFO L82 PathProgramCache]: Analyzing trace with hash 492201731, now seen corresponding path program 157 times [2020-10-16 12:28:29,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:29,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471112839] [2020-10-16 12:28:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:29,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471112839] [2020-10-16 12:28:29,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578179915] [2020-10-16 12:28:29,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:29,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:30,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:30,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:30,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [511591783] [2020-10-16 12:28:30,467 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:30,467 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:30,471 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:30,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:30,487 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:30,488 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,503 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:30,503 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,510 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:30,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:30,511 INFO L87 Difference]: Start difference. First operand 231 states and 575 transitions. Second operand 11 states. [2020-10-16 12:28:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:30,709 INFO L93 Difference]: Finished difference Result 294 states and 689 transitions. [2020-10-16 12:28:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:30,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:30,711 INFO L225 Difference]: With dead ends: 294 [2020-10-16 12:28:30,711 INFO L226 Difference]: Without dead ends: 291 [2020-10-16 12:28:30,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-16 12:28:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 230. [2020-10-16 12:28:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-16 12:28:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 572 transitions. [2020-10-16 12:28:30,715 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 572 transitions. Word has length 15 [2020-10-16 12:28:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:30,715 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 572 transitions. [2020-10-16 12:28:30,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 572 transitions. [2020-10-16 12:28:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:30,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:30,716 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:30,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:30,925 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash 492230561, now seen corresponding path program 158 times [2020-10-16 12:28:30,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:30,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933344300] [2020-10-16 12:28:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:31,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933344300] [2020-10-16 12:28:31,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127909397] [2020-10-16 12:28:31,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:31,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:31,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:31,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:31,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:31,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:31,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [551990617] [2020-10-16 12:28:31,419 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:31,419 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:31,422 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:31,422 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:31,431 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:31,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:31,444 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:31,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:31,454 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:31,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:31,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:31,455 INFO L87 Difference]: Start difference. First operand 230 states and 572 transitions. Second operand 11 states. [2020-10-16 12:28:31,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:31,629 INFO L93 Difference]: Finished difference Result 297 states and 697 transitions. [2020-10-16 12:28:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:31,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:31,631 INFO L225 Difference]: With dead ends: 297 [2020-10-16 12:28:31,631 INFO L226 Difference]: Without dead ends: 294 [2020-10-16 12:28:31,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-16 12:28:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 231. [2020-10-16 12:28:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-16 12:28:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 575 transitions. [2020-10-16 12:28:31,635 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 575 transitions. Word has length 15 [2020-10-16 12:28:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:31,636 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 575 transitions. [2020-10-16 12:28:31,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 575 transitions. [2020-10-16 12:28:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:31,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:31,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:31,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:31,837 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:31,838 INFO L82 PathProgramCache]: Analyzing trace with hash 492231522, now seen corresponding path program 159 times [2020-10-16 12:28:31,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:31,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442885689] [2020-10-16 12:28:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:31,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442885689] [2020-10-16 12:28:31,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021955632] [2020-10-16 12:28:31,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:32,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:32,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:32,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:32,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:32,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:32,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:32,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [27605625] [2020-10-16 12:28:32,280 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:32,281 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:32,283 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:32,284 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:32,294 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:32,294 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:32,308 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:32,308 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:32,317 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:32,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:32,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:32,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:32,318 INFO L87 Difference]: Start difference. First operand 231 states and 575 transitions. Second operand 11 states. [2020-10-16 12:28:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:32,500 INFO L93 Difference]: Finished difference Result 304 states and 713 transitions. [2020-10-16 12:28:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:32,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:32,502 INFO L225 Difference]: With dead ends: 304 [2020-10-16 12:28:32,503 INFO L226 Difference]: Without dead ends: 300 [2020-10-16 12:28:32,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-16 12:28:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 232. [2020-10-16 12:28:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-16 12:28:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-16 12:28:32,508 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-16 12:28:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:32,508 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-16 12:28:32,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-16 12:28:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:32,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:32,509 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:32,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2020-10-16 12:28:32,710 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:32,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:32,710 INFO L82 PathProgramCache]: Analyzing trace with hash 519906400, now seen corresponding path program 160 times [2020-10-16 12:28:32,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:32,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219832483] [2020-10-16 12:28:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:32,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219832483] [2020-10-16 12:28:32,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015307363] [2020-10-16 12:28:32,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:32,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:32,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:32,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:35,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:35,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1132572210] [2020-10-16 12:28:35,218 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:35,218 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:35,221 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:35,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:35,229 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:35,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:35,243 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:35,244 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:35,252 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:35,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:35,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:35,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:35,254 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 11 states. [2020-10-16 12:28:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:35,477 INFO L93 Difference]: Finished difference Result 282 states and 664 transitions. [2020-10-16 12:28:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:35,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:35,478 INFO L225 Difference]: With dead ends: 282 [2020-10-16 12:28:35,478 INFO L226 Difference]: Without dead ends: 280 [2020-10-16 12:28:35,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-16 12:28:35,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 235. [2020-10-16 12:28:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-16 12:28:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-16 12:28:35,482 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-16 12:28:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:35,483 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-16 12:28:35,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-16 12:28:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:35,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:35,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:35,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:35,684 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:35,685 INFO L82 PathProgramCache]: Analyzing trace with hash 519907361, now seen corresponding path program 161 times [2020-10-16 12:28:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633042457] [2020-10-16 12:28:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:35,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633042457] [2020-10-16 12:28:35,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771322722] [2020-10-16 12:28:35,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:35,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:35,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:35,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:35,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:38,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:38,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:38,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [194957175] [2020-10-16 12:28:38,533 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:38,534 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:38,537 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:38,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:38,542 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:38,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:38,560 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:38,560 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:38,568 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:38,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:38,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:28:38,569 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 11 states. [2020-10-16 12:28:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:38,810 INFO L93 Difference]: Finished difference Result 300 states and 705 transitions. [2020-10-16 12:28:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:38,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:38,812 INFO L225 Difference]: With dead ends: 300 [2020-10-16 12:28:38,812 INFO L226 Difference]: Without dead ends: 297 [2020-10-16 12:28:38,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=165, Invalid=340, Unknown=1, NotChecked=0, Total=506 [2020-10-16 12:28:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-16 12:28:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 234. [2020-10-16 12:28:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-16 12:28:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 584 transitions. [2020-10-16 12:28:38,816 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 584 transitions. Word has length 15 [2020-10-16 12:28:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:38,816 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 584 transitions. [2020-10-16 12:28:38,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 584 transitions. [2020-10-16 12:28:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:38,817 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:39,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:39,020 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash 519936191, now seen corresponding path program 162 times [2020-10-16 12:28:39,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:39,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253394534] [2020-10-16 12:28:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:39,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253394534] [2020-10-16 12:28:39,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124973826] [2020-10-16 12:28:39,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:39,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:39,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:39,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:42,274 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-16 12:28:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:44,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:44,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1875507483] [2020-10-16 12:28:44,989 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:44,989 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:44,993 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:44,993 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:45,003 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:45,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:45,030 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:45,030 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:45,044 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:45,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:45,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:45,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=236, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:28:45,045 INFO L87 Difference]: Start difference. First operand 234 states and 584 transitions. Second operand 11 states. [2020-10-16 12:28:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:45,967 INFO L93 Difference]: Finished difference Result 301 states and 707 transitions. [2020-10-16 12:28:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:45,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:45,970 INFO L225 Difference]: With dead ends: 301 [2020-10-16 12:28:45,970 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 12:28:45,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=163, Invalid=341, Unknown=2, NotChecked=0, Total=506 [2020-10-16 12:28:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 12:28:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 235. [2020-10-16 12:28:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-16 12:28:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-16 12:28:45,974 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-16 12:28:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:45,974 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-16 12:28:45,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-16 12:28:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:45,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:45,975 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:46,176 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash 519937152, now seen corresponding path program 163 times [2020-10-16 12:28:46,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:46,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821010836] [2020-10-16 12:28:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:46,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821010836] [2020-10-16 12:28:46,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168439137] [2020-10-16 12:28:46,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:46,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:46,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:50,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:50,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:50,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [255514297] [2020-10-16 12:28:50,660 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:50,660 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:50,664 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:50,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:50,679 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:50,679 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:50,694 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:50,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:50,711 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:50,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:50,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:50,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:50,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=241, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:28:50,713 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 11 states. [2020-10-16 12:28:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:50,999 INFO L93 Difference]: Finished difference Result 311 states and 728 transitions. [2020-10-16 12:28:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:51,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:51,000 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:28:51,000 INFO L226 Difference]: Without dead ends: 307 [2020-10-16 12:28:51,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=162, Invalid=343, Unknown=1, NotChecked=0, Total=506 [2020-10-16 12:28:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-16 12:28:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 233. [2020-10-16 12:28:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-16 12:28:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 581 transitions. [2020-10-16 12:28:51,005 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 581 transitions. Word has length 15 [2020-10-16 12:28:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:51,005 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 581 transitions. [2020-10-16 12:28:51,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 581 transitions. [2020-10-16 12:28:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:51,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:51,006 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:51,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:51,207 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash 520829921, now seen corresponding path program 164 times [2020-10-16 12:28:51,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:51,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892263291] [2020-10-16 12:28:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:51,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892263291] [2020-10-16 12:28:51,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486138717] [2020-10-16 12:28:51,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:51,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:51,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:51,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:51,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:52,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:52,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:52,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [378410389] [2020-10-16 12:28:52,744 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:52,745 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:52,748 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:52,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:52,754 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:52,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:52,770 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:52,770 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:52,780 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:52,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:52,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:52,782 INFO L87 Difference]: Start difference. First operand 233 states and 581 transitions. Second operand 11 states. [2020-10-16 12:28:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:53,036 INFO L93 Difference]: Finished difference Result 303 states and 714 transitions. [2020-10-16 12:28:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:28:53,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:53,038 INFO L225 Difference]: With dead ends: 303 [2020-10-16 12:28:53,038 INFO L226 Difference]: Without dead ends: 300 [2020-10-16 12:28:53,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-16 12:28:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 235. [2020-10-16 12:28:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-16 12:28:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-16 12:28:53,042 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-16 12:28:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:53,042 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-16 12:28:53,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-16 12:28:53,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:53,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:53,043 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:53,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:53,244 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash 520830882, now seen corresponding path program 165 times [2020-10-16 12:28:53,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:53,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94193290] [2020-10-16 12:28:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:53,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94193290] [2020-10-16 12:28:53,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915803211] [2020-10-16 12:28:53,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:53,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:53,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:53,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:53,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:53,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:53,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:53,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1712206144] [2020-10-16 12:28:53,743 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:53,744 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:53,747 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:53,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:53,754 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:53,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:53,769 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:53,769 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:53,778 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:53,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:53,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:53,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:53,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:53,779 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 11 states. [2020-10-16 12:28:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:54,021 INFO L93 Difference]: Finished difference Result 316 states and 744 transitions. [2020-10-16 12:28:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:54,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:54,023 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:28:54,023 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:28:54,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:28:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 234. [2020-10-16 12:28:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-16 12:28:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 584 transitions. [2020-10-16 12:28:54,027 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 584 transitions. Word has length 15 [2020-10-16 12:28:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:54,027 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 584 transitions. [2020-10-16 12:28:54,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 584 transitions. [2020-10-16 12:28:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:54,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:54,028 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:54,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-10-16 12:28:54,229 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash 520859712, now seen corresponding path program 166 times [2020-10-16 12:28:54,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:54,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688225860] [2020-10-16 12:28:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:54,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688225860] [2020-10-16 12:28:54,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800253111] [2020-10-16 12:28:54,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:54,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:54,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:54,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:54,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:55,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:55,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [577418539] [2020-10-16 12:28:55,309 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:55,309 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:55,312 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:55,312 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:55,318 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:55,318 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,333 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:55,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,343 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:55,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:55,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:55,344 INFO L87 Difference]: Start difference. First operand 234 states and 584 transitions. Second operand 11 states. [2020-10-16 12:28:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:55,576 INFO L93 Difference]: Finished difference Result 315 states and 742 transitions. [2020-10-16 12:28:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:55,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:55,578 INFO L225 Difference]: With dead ends: 315 [2020-10-16 12:28:55,578 INFO L226 Difference]: Without dead ends: 311 [2020-10-16 12:28:55,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-16 12:28:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 235. [2020-10-16 12:28:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-16 12:28:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-16 12:28:55,582 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-16 12:28:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:55,582 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-16 12:28:55,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-16 12:28:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:55,582 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:55,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-16 12:28:55,783 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash 520860673, now seen corresponding path program 167 times [2020-10-16 12:28:55,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:55,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392236416] [2020-10-16 12:28:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392236416] [2020-10-16 12:28:55,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566386228] [2020-10-16 12:28:55,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:55,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:55,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:55,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:56,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:56,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:56,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2038427457] [2020-10-16 12:28:56,219 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:56,219 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:56,222 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:56,222 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:56,227 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:56,228 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:56,245 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:56,245 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:56,253 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:56,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:56,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:56,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:56,254 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 11 states. [2020-10-16 12:28:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:56,470 INFO L93 Difference]: Finished difference Result 309 states and 725 transitions. [2020-10-16 12:28:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:56,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:56,472 INFO L225 Difference]: With dead ends: 309 [2020-10-16 12:28:56,472 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 12:28:56,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 12:28:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 236. [2020-10-16 12:28:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-16 12:28:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 583 transitions. [2020-10-16 12:28:56,476 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 583 transitions. Word has length 15 [2020-10-16 12:28:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:56,477 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 583 transitions. [2020-10-16 12:28:56,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 583 transitions. [2020-10-16 12:28:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:56,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:56,477 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:56,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:56,680 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1378780930, now seen corresponding path program 168 times [2020-10-16 12:28:56,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:56,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729414516] [2020-10-16 12:28:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:56,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729414516] [2020-10-16 12:28:56,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076266178] [2020-10-16 12:28:56,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:56,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:56,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:56,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:57,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:57,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:57,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1999748382] [2020-10-16 12:28:57,122 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:57,123 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:57,126 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:57,127 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:57,136 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:57,137 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:57,145 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:57,145 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:57,154 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:57,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:57,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:57,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:57,155 INFO L87 Difference]: Start difference. First operand 236 states and 583 transitions. Second operand 11 states. [2020-10-16 12:28:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:57,434 INFO L93 Difference]: Finished difference Result 279 states and 656 transitions. [2020-10-16 12:28:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:57,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:57,435 INFO L225 Difference]: With dead ends: 279 [2020-10-16 12:28:57,436 INFO L226 Difference]: Without dead ends: 277 [2020-10-16 12:28:57,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-16 12:28:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 240. [2020-10-16 12:28:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:28:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-16 12:28:57,440 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-16 12:28:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:57,441 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-16 12:28:57,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-16 12:28:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:57,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:57,441 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:57,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2020-10-16 12:28:57,642 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1378781891, now seen corresponding path program 169 times [2020-10-16 12:28:57,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:57,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262991596] [2020-10-16 12:28:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262991596] [2020-10-16 12:28:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827250293] [2020-10-16 12:28:57,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:57,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:57,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:58,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:58,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1478440959] [2020-10-16 12:28:58,084 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:58,085 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:58,087 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:58,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:58,096 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:58,096 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:58,105 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:58,105 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:58,114 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:58,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:58,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:58,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:58,115 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 11 states. [2020-10-16 12:28:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:58,402 INFO L93 Difference]: Finished difference Result 302 states and 708 transitions. [2020-10-16 12:28:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:58,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:58,404 INFO L225 Difference]: With dead ends: 302 [2020-10-16 12:28:58,404 INFO L226 Difference]: Without dead ends: 299 [2020-10-16 12:28:58,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-16 12:28:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 239. [2020-10-16 12:28:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-16 12:28:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 591 transitions. [2020-10-16 12:28:58,408 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 591 transitions. Word has length 15 [2020-10-16 12:28:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:58,409 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 591 transitions. [2020-10-16 12:28:58,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 591 transitions. [2020-10-16 12:28:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:58,409 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:58,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:58,610 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1378810721, now seen corresponding path program 170 times [2020-10-16 12:28:58,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:58,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308138596] [2020-10-16 12:28:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308138596] [2020-10-16 12:28:58,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694114349] [2020-10-16 12:28:58,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:58,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:58,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:58,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:59,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:59,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:59,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1814148744] [2020-10-16 12:28:59,189 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:59,189 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:59,192 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:59,192 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:59,203 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:59,204 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:59,214 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:59,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:59,221 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:59,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:59,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:59,222 INFO L87 Difference]: Start difference. First operand 239 states and 591 transitions. Second operand 11 states. [2020-10-16 12:28:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:59,469 INFO L93 Difference]: Finished difference Result 304 states and 713 transitions. [2020-10-16 12:28:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:59,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:59,470 INFO L225 Difference]: With dead ends: 304 [2020-10-16 12:28:59,470 INFO L226 Difference]: Without dead ends: 301 [2020-10-16 12:28:59,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-16 12:28:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 240. [2020-10-16 12:28:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:28:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-16 12:28:59,474 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-16 12:28:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:59,475 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-16 12:28:59,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-16 12:28:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:59,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:59,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:59,676 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1378811682, now seen corresponding path program 171 times [2020-10-16 12:28:59,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:59,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562122352] [2020-10-16 12:28:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:59,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562122352] [2020-10-16 12:28:59,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307940107] [2020-10-16 12:28:59,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:59,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:28:59,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:59,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:00,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:00,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [677272687] [2020-10-16 12:29:00,093 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:00,094 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:00,096 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:00,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:00,105 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:00,106 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:00,112 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:00,112 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:00,119 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:00,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:00,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:00,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:00,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:00,120 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 11 states. [2020-10-16 12:29:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:00,381 INFO L93 Difference]: Finished difference Result 316 states and 740 transitions. [2020-10-16 12:29:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:00,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:00,383 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:29:00,383 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:29:00,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:29:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 238. [2020-10-16 12:29:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-16 12:29:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 588 transitions. [2020-10-16 12:29:00,387 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 588 transitions. Word has length 15 [2020-10-16 12:29:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:00,387 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 588 transitions. [2020-10-16 12:29:00,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 588 transitions. [2020-10-16 12:29:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:00,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:00,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:00,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:00,589 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704451, now seen corresponding path program 172 times [2020-10-16 12:29:00,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834162358] [2020-10-16 12:29:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834162358] [2020-10-16 12:29:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971623951] [2020-10-16 12:29:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:00,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:00,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:00,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:00,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:00,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1010310711] [2020-10-16 12:29:00,981 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:00,982 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:00,996 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:00,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:01,006 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,016 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,024 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:01,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:01,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:01,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:01,025 INFO L87 Difference]: Start difference. First operand 238 states and 588 transitions. Second operand 11 states. [2020-10-16 12:29:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:01,260 INFO L93 Difference]: Finished difference Result 304 states and 714 transitions. [2020-10-16 12:29:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:01,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:01,262 INFO L225 Difference]: With dead ends: 304 [2020-10-16 12:29:01,263 INFO L226 Difference]: Without dead ends: 301 [2020-10-16 12:29:01,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-16 12:29:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 240. [2020-10-16 12:29:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-16 12:29:01,268 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-16 12:29:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:01,268 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-16 12:29:01,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-16 12:29:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:01,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:01,269 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:01,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:01,470 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:01,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1379705412, now seen corresponding path program 173 times [2020-10-16 12:29:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858096297] [2020-10-16 12:29:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:01,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858096297] [2020-10-16 12:29:01,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255460896] [2020-10-16 12:29:01,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:01,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:01,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:01,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:01,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1669491300] [2020-10-16 12:29:01,835 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:01,836 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:01,839 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:01,839 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:01,848 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,849 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,859 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,859 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,868 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:01,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:01,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:01,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:01,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:01,869 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 11 states. [2020-10-16 12:29:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:02,115 INFO L93 Difference]: Finished difference Result 316 states and 744 transitions. [2020-10-16 12:29:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:02,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:02,117 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:29:02,117 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:29:02,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:29:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 239. [2020-10-16 12:29:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-16 12:29:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 591 transitions. [2020-10-16 12:29:02,136 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 591 transitions. Word has length 15 [2020-10-16 12:29:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:02,136 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 591 transitions. [2020-10-16 12:29:02,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 591 transitions. [2020-10-16 12:29:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:02,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:02,137 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:02,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2020-10-16 12:29:02,348 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1379734242, now seen corresponding path program 174 times [2020-10-16 12:29:02,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:02,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329395901] [2020-10-16 12:29:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:02,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329395901] [2020-10-16 12:29:02,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532976982] [2020-10-16 12:29:02,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:02,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:02,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:02,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:02,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:02,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:02,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:02,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [903063084] [2020-10-16 12:29:02,757 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:02,758 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:02,760 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:02,761 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:02,772 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:02,772 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,779 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:02,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,796 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:02,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:02,797 INFO L87 Difference]: Start difference. First operand 239 states and 591 transitions. Second operand 11 states. [2020-10-16 12:29:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:03,096 INFO L93 Difference]: Finished difference Result 317 states and 747 transitions. [2020-10-16 12:29:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:03,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:03,098 INFO L225 Difference]: With dead ends: 317 [2020-10-16 12:29:03,098 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:29:03,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:29:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 240. [2020-10-16 12:29:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-16 12:29:03,102 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-16 12:29:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:03,103 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-16 12:29:03,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-16 12:29:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:03,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:03,104 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:03,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:03,315 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1379735203, now seen corresponding path program 175 times [2020-10-16 12:29:03,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:03,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632331922] [2020-10-16 12:29:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632331922] [2020-10-16 12:29:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637080605] [2020-10-16 12:29:03,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:03,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:03,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:03,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:03,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2084860163] [2020-10-16 12:29:03,715 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:03,716 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:03,718 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:03,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:03,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,730 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,737 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,737 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,745 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:03,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:03,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:03,746 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 11 states. [2020-10-16 12:29:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:04,014 INFO L93 Difference]: Finished difference Result 313 states and 732 transitions. [2020-10-16 12:29:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:04,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:04,016 INFO L225 Difference]: With dead ends: 313 [2020-10-16 12:29:04,016 INFO L226 Difference]: Without dead ends: 299 [2020-10-16 12:29:04,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-16 12:29:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 237. [2020-10-16 12:29:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-16 12:29:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 585 transitions. [2020-10-16 12:29:04,020 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 585 transitions. Word has length 15 [2020-10-16 12:29:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:04,021 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 585 transitions. [2020-10-16 12:29:04,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 585 transitions. [2020-10-16 12:29:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:04,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:04,021 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:04,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-10-16 12:29:04,223 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1407410081, now seen corresponding path program 176 times [2020-10-16 12:29:04,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:04,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036203643] [2020-10-16 12:29:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036203643] [2020-10-16 12:29:04,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384743298] [2020-10-16 12:29:04,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:04,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:04,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:04,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:04,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:04,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:04,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1542293246] [2020-10-16 12:29:04,760 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:04,761 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:04,766 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:04,766 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:04,782 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,783 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,799 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,800 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,810 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:04,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:04,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:04,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:04,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:04,811 INFO L87 Difference]: Start difference. First operand 237 states and 585 transitions. Second operand 11 states. [2020-10-16 12:29:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:05,199 INFO L93 Difference]: Finished difference Result 300 states and 706 transitions. [2020-10-16 12:29:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:05,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:05,201 INFO L225 Difference]: With dead ends: 300 [2020-10-16 12:29:05,201 INFO L226 Difference]: Without dead ends: 297 [2020-10-16 12:29:05,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-16 12:29:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 240. [2020-10-16 12:29:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 593 transitions. [2020-10-16 12:29:05,207 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 593 transitions. Word has length 15 [2020-10-16 12:29:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:05,207 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 593 transitions. [2020-10-16 12:29:05,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 593 transitions. [2020-10-16 12:29:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:05,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:05,208 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:05,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-16 12:29:05,409 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:05,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411042, now seen corresponding path program 177 times [2020-10-16 12:29:05,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:05,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091982478] [2020-10-16 12:29:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:05,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091982478] [2020-10-16 12:29:05,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694972587] [2020-10-16 12:29:05,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:05,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:05,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:05,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:05,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:05,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:05,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:05,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2077550363] [2020-10-16 12:29:05,945 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:05,945 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:05,948 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:05,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:05,959 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:05,959 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:05,968 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:05,968 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:05,977 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:05,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:05,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:05,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:05,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:05,978 INFO L87 Difference]: Start difference. First operand 240 states and 593 transitions. Second operand 11 states. [2020-10-16 12:29:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:06,305 INFO L93 Difference]: Finished difference Result 317 states and 746 transitions. [2020-10-16 12:29:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:06,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:06,306 INFO L225 Difference]: With dead ends: 317 [2020-10-16 12:29:06,306 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:29:06,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:29:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 239. [2020-10-16 12:29:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-16 12:29:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 590 transitions. [2020-10-16 12:29:06,311 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 590 transitions. Word has length 15 [2020-10-16 12:29:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:06,311 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 590 transitions. [2020-10-16 12:29:06,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 590 transitions. [2020-10-16 12:29:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:06,311 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:06,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:06,512 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1407439872, now seen corresponding path program 178 times [2020-10-16 12:29:06,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:06,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155276030] [2020-10-16 12:29:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:06,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155276030] [2020-10-16 12:29:06,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334904084] [2020-10-16 12:29:06,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:06,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:06,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:06,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:06,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:12,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:12,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:12,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1859349135] [2020-10-16 12:29:12,529 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:12,530 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:12,533 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:12,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:12,544 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:12,545 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:12,557 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:12,557 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:12,564 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:12,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:12,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:12,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:12,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-16 12:29:12,565 INFO L87 Difference]: Start difference. First operand 239 states and 590 transitions. Second operand 11 states. [2020-10-16 12:29:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:12,834 INFO L93 Difference]: Finished difference Result 314 states and 742 transitions. [2020-10-16 12:29:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:12,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:12,836 INFO L225 Difference]: With dead ends: 314 [2020-10-16 12:29:12,836 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:29:12,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=164, Invalid=386, Unknown=2, NotChecked=0, Total=552 [2020-10-16 12:29:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:29:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-10-16 12:29:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 593 transitions. [2020-10-16 12:29:12,843 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 593 transitions. Word has length 15 [2020-10-16 12:29:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:12,843 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 593 transitions. [2020-10-16 12:29:12,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 593 transitions. [2020-10-16 12:29:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:12,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:12,844 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:13,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:13,045 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:13,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1407440833, now seen corresponding path program 179 times [2020-10-16 12:29:13,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:13,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094303388] [2020-10-16 12:29:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094303388] [2020-10-16 12:29:13,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25914147] [2020-10-16 12:29:13,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:13,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:13,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:13,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:13,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:13,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [45752324] [2020-10-16 12:29:13,545 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:13,545 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:13,548 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:13,548 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:13,561 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,574 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,575 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,583 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:13,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:13,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:13,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:13,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:13,584 INFO L87 Difference]: Start difference. First operand 240 states and 593 transitions. Second operand 11 states. [2020-10-16 12:29:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:13,882 INFO L93 Difference]: Finished difference Result 321 states and 747 transitions. [2020-10-16 12:29:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:13,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:13,884 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:29:13,884 INFO L226 Difference]: Without dead ends: 308 [2020-10-16 12:29:13,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-16 12:29:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 238. [2020-10-16 12:29:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-16 12:29:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 587 transitions. [2020-10-16 12:29:13,889 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 587 transitions. Word has length 15 [2020-10-16 12:29:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:13,889 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 587 transitions. [2020-10-16 12:29:13,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 587 transitions. [2020-10-16 12:29:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:13,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:13,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:14,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:14,091 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:14,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1408333602, now seen corresponding path program 180 times [2020-10-16 12:29:14,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:14,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520230424] [2020-10-16 12:29:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520230424] [2020-10-16 12:29:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875782834] [2020-10-16 12:29:14,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:14,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:14,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:14,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:14,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:14,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:14,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [29053451] [2020-10-16 12:29:14,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:14,595 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:14,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:14,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:14,610 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,619 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,619 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,629 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:14,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:14,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:14,630 INFO L87 Difference]: Start difference. First operand 238 states and 587 transitions. Second operand 11 states. [2020-10-16 12:29:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:14,922 INFO L93 Difference]: Finished difference Result 313 states and 739 transitions. [2020-10-16 12:29:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:14,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:14,924 INFO L225 Difference]: With dead ends: 313 [2020-10-16 12:29:14,924 INFO L226 Difference]: Without dead ends: 309 [2020-10-16 12:29:14,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-16 12:29:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 240. [2020-10-16 12:29:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 592 transitions. [2020-10-16 12:29:14,929 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 592 transitions. Word has length 15 [2020-10-16 12:29:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:14,929 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 592 transitions. [2020-10-16 12:29:14,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 592 transitions. [2020-10-16 12:29:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:14,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:14,930 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:15,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2020-10-16 12:29:15,131 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1408334563, now seen corresponding path program 181 times [2020-10-16 12:29:15,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:15,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950009182] [2020-10-16 12:29:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:15,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950009182] [2020-10-16 12:29:15,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273690559] [2020-10-16 12:29:15,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:15,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:15,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:15,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:15,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:15,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050353670] [2020-10-16 12:29:15,618 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:15,619 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:15,622 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:15,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:15,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,641 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,641 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,651 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:15,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:15,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:15,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:15,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:15,653 INFO L87 Difference]: Start difference. First operand 240 states and 592 transitions. Second operand 11 states. [2020-10-16 12:29:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:16,010 INFO L93 Difference]: Finished difference Result 316 states and 739 transitions. [2020-10-16 12:29:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:16,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:16,012 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:29:16,012 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:29:16,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:29:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 239. [2020-10-16 12:29:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-16 12:29:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 589 transitions. [2020-10-16 12:29:16,017 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 589 transitions. Word has length 15 [2020-10-16 12:29:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:16,017 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 589 transitions. [2020-10-16 12:29:16,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 589 transitions. [2020-10-16 12:29:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:16,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:16,018 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:16,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:16,219 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1408363393, now seen corresponding path program 182 times [2020-10-16 12:29:16,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:16,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43186748] [2020-10-16 12:29:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43186748] [2020-10-16 12:29:16,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272993675] [2020-10-16 12:29:16,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:16,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:16,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:16,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:16,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:16,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1681974517] [2020-10-16 12:29:16,668 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:16,669 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:16,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:16,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:16,682 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,683 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,702 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:16,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:16,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:16,703 INFO L87 Difference]: Start difference. First operand 239 states and 589 transitions. Second operand 11 states. [2020-10-16 12:29:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:16,980 INFO L93 Difference]: Finished difference Result 314 states and 732 transitions. [2020-10-16 12:29:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:16,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:16,982 INFO L225 Difference]: With dead ends: 314 [2020-10-16 12:29:16,982 INFO L226 Difference]: Without dead ends: 303 [2020-10-16 12:29:16,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-16 12:29:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 240. [2020-10-16 12:29:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-16 12:29:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 590 transitions. [2020-10-16 12:29:16,987 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 590 transitions. Word has length 15 [2020-10-16 12:29:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:16,988 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 590 transitions. [2020-10-16 12:29:16,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 590 transitions. [2020-10-16 12:29:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:16,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:16,988 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:17,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:17,189 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:17,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:17,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2060879712, now seen corresponding path program 183 times [2020-10-16 12:29:17,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:17,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181920586] [2020-10-16 12:29:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:17,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181920586] [2020-10-16 12:29:17,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727811305] [2020-10-16 12:29:17,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:17,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:17,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:17,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:17,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:17,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:17,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [18026403] [2020-10-16 12:29:17,595 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:17,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:17,598 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:17,598 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:17,607 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,607 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,657 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,690 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,690 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,702 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,709 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [132673#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:17,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:17,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:17,710 INFO L87 Difference]: Start difference. First operand 240 states and 590 transitions. Second operand 12 states. [2020-10-16 12:29:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:17,997 INFO L93 Difference]: Finished difference Result 286 states and 671 transitions. [2020-10-16 12:29:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:17,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:17,999 INFO L225 Difference]: With dead ends: 286 [2020-10-16 12:29:17,999 INFO L226 Difference]: Without dead ends: 284 [2020-10-16 12:29:18,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-16 12:29:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2020-10-16 12:29:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-16 12:29:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 601 transitions. [2020-10-16 12:29:18,004 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 601 transitions. Word has length 15 [2020-10-16 12:29:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:18,004 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 601 transitions. [2020-10-16 12:29:18,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 601 transitions. [2020-10-16 12:29:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:18,005 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:18,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:18,206 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:18,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2060878751, now seen corresponding path program 184 times [2020-10-16 12:29:18,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:18,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470434641] [2020-10-16 12:29:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:18,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470434641] [2020-10-16 12:29:18,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734648597] [2020-10-16 12:29:18,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:18,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:18,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:18,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:18,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:18,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:18,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1473850733] [2020-10-16 12:29:18,642 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:18,643 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:18,646 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:18,647 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:18,649 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:18,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:18,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:18,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:18,728 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:18,729 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:18,738 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:18,738 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:18,748 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [133519#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:18,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:18,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:18,749 INFO L87 Difference]: Start difference. First operand 244 states and 601 transitions. Second operand 12 states. [2020-10-16 12:29:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:19,052 INFO L93 Difference]: Finished difference Result 310 states and 723 transitions. [2020-10-16 12:29:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:19,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:19,054 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:29:19,054 INFO L226 Difference]: Without dead ends: 307 [2020-10-16 12:29:19,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-16 12:29:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 243. [2020-10-16 12:29:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-16 12:29:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 598 transitions. [2020-10-16 12:29:19,058 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 598 transitions. Word has length 15 [2020-10-16 12:29:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:19,058 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 598 transitions. [2020-10-16 12:29:19,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 598 transitions. [2020-10-16 12:29:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:19,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:19,059 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:19,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:19,260 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2060849921, now seen corresponding path program 185 times [2020-10-16 12:29:19,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:19,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596965409] [2020-10-16 12:29:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:19,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596965409] [2020-10-16 12:29:19,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957261762] [2020-10-16 12:29:19,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:19,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:19,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:19,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:19,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:19,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:19,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [200784317] [2020-10-16 12:29:19,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:19,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:19,795 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:19,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:19,795 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:19,796 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:19,840 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:19,840 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:19,876 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:19,877 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:19,904 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:19,905 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:19,914 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [134387#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:19,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:19,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:19,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:19,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:19,915 INFO L87 Difference]: Start difference. First operand 243 states and 598 transitions. Second operand 12 states. [2020-10-16 12:29:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:20,199 INFO L93 Difference]: Finished difference Result 311 states and 728 transitions. [2020-10-16 12:29:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:20,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:20,201 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:29:20,201 INFO L226 Difference]: Without dead ends: 308 [2020-10-16 12:29:20,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-16 12:29:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 244. [2020-10-16 12:29:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-16 12:29:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 601 transitions. [2020-10-16 12:29:20,206 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 601 transitions. Word has length 15 [2020-10-16 12:29:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:20,206 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 601 transitions. [2020-10-16 12:29:20,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 601 transitions. [2020-10-16 12:29:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:20,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:20,207 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:20,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2020-10-16 12:29:20,408 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:20,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2060848960, now seen corresponding path program 186 times [2020-10-16 12:29:20,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:20,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201200123] [2020-10-16 12:29:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201200123] [2020-10-16 12:29:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603783268] [2020-10-16 12:29:20,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:20,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:20,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:20,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:20,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:20,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:20,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:20,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [505741513] [2020-10-16 12:29:20,893 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:20,894 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:20,897 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:20,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:20,898 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,899 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,950 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,950 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,991 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,005 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:21,005 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,022 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [135258#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:21,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:21,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:21,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:21,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:21,024 INFO L87 Difference]: Start difference. First operand 244 states and 601 transitions. Second operand 12 states. [2020-10-16 12:29:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:21,385 INFO L93 Difference]: Finished difference Result 314 states and 734 transitions. [2020-10-16 12:29:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:21,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:21,392 INFO L225 Difference]: With dead ends: 314 [2020-10-16 12:29:21,392 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:29:21,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:29:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 242. [2020-10-16 12:29:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-16 12:29:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 595 transitions. [2020-10-16 12:29:21,400 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 595 transitions. Word has length 15 [2020-10-16 12:29:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:21,400 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 595 transitions. [2020-10-16 12:29:21,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 595 transitions. [2020-10-16 12:29:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:21,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:21,401 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:21,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-16 12:29:21,615 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2059956191, now seen corresponding path program 187 times [2020-10-16 12:29:21,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:21,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048130771] [2020-10-16 12:29:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:21,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048130771] [2020-10-16 12:29:21,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473472714] [2020-10-16 12:29:21,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:21,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:21,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:22,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:22,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:22,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1424348852] [2020-10-16 12:29:22,236 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:22,237 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:22,241 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:22,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:22,242 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:22,242 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:22,294 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:22,294 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:22,321 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:22,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:22,334 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:22,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:22,343 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [136128#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:22,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:22,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:22,345 INFO L87 Difference]: Start difference. First operand 242 states and 595 transitions. Second operand 12 states. [2020-10-16 12:29:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:22,804 INFO L93 Difference]: Finished difference Result 317 states and 745 transitions. [2020-10-16 12:29:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:22,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:22,807 INFO L225 Difference]: With dead ends: 317 [2020-10-16 12:29:22,807 INFO L226 Difference]: Without dead ends: 313 [2020-10-16 12:29:22,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-16 12:29:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 249. [2020-10-16 12:29:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-16 12:29:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 612 transitions. [2020-10-16 12:29:22,814 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 612 transitions. Word has length 15 [2020-10-16 12:29:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:22,814 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 612 transitions. [2020-10-16 12:29:22,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 612 transitions. [2020-10-16 12:29:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:22,816 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:23,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-16 12:29:23,032 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:23,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2059955230, now seen corresponding path program 188 times [2020-10-16 12:29:23,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:23,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939508431] [2020-10-16 12:29:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:23,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939508431] [2020-10-16 12:29:23,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727056138] [2020-10-16 12:29:23,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:23,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:23,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:23,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:23,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:29,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:29,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:29,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472527026] [2020-10-16 12:29:29,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:29,680 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:29,683 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:29,684 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:29,684 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,685 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,740 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,740 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,772 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,782 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,783 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,791 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [137015#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:29,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:29,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:29,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:29,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=276, Unknown=2, NotChecked=0, Total=380 [2020-10-16 12:29:29,792 INFO L87 Difference]: Start difference. First operand 249 states and 612 transitions. Second operand 12 states. [2020-10-16 12:29:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:30,134 INFO L93 Difference]: Finished difference Result 324 states and 757 transitions. [2020-10-16 12:29:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:30,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:30,135 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:29:30,135 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:29:30,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=173, Invalid=425, Unknown=2, NotChecked=0, Total=600 [2020-10-16 12:29:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:29:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 247. [2020-10-16 12:29:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-16 12:29:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 606 transitions. [2020-10-16 12:29:30,142 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 606 transitions. Word has length 15 [2020-10-16 12:29:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:30,142 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 606 transitions. [2020-10-16 12:29:30,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 606 transitions. [2020-10-16 12:29:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:30,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:30,143 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:30,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-16 12:29:30,349 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:30,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:30,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2059926400, now seen corresponding path program 189 times [2020-10-16 12:29:30,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:30,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847506488] [2020-10-16 12:29:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:30,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847506488] [2020-10-16 12:29:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349408433] [2020-10-16 12:29:30,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:30,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:30,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:30,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:30,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:31,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:31,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:31,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2018169352] [2020-10-16 12:29:31,942 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:31,943 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:31,945 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:31,946 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:31,946 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:31,998 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,998 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,028 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,028 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,041 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,041 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,048 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [137905#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:32,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:32,049 INFO L87 Difference]: Start difference. First operand 247 states and 606 transitions. Second operand 12 states. [2020-10-16 12:29:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:32,392 INFO L93 Difference]: Finished difference Result 321 states and 751 transitions. [2020-10-16 12:29:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:32,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:32,394 INFO L225 Difference]: With dead ends: 321 [2020-10-16 12:29:32,394 INFO L226 Difference]: Without dead ends: 310 [2020-10-16 12:29:32,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-16 12:29:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 247. [2020-10-16 12:29:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-16 12:29:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 607 transitions. [2020-10-16 12:29:32,399 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 607 transitions. Word has length 15 [2020-10-16 12:29:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:32,399 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 607 transitions. [2020-10-16 12:29:32,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 607 transitions. [2020-10-16 12:29:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:32,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:32,400 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:32,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:32,601 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2059925439, now seen corresponding path program 190 times [2020-10-16 12:29:32,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:32,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773915339] [2020-10-16 12:29:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:32,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773915339] [2020-10-16 12:29:32,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061257667] [2020-10-16 12:29:32,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:32,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:32,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:32,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:32,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:33,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:33,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:33,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618745897] [2020-10-16 12:29:33,124 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:33,125 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:33,128 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:33,128 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:33,129 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,129 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,186 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,186 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,223 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,234 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,235 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,243 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [138794#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:33,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:33,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:33,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:33,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:33,244 INFO L87 Difference]: Start difference. First operand 247 states and 607 transitions. Second operand 12 states. [2020-10-16 12:29:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:33,568 INFO L93 Difference]: Finished difference Result 312 states and 726 transitions. [2020-10-16 12:29:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:33,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:33,571 INFO L225 Difference]: With dead ends: 312 [2020-10-16 12:29:33,571 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 12:29:33,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 12:29:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 244. [2020-10-16 12:29:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-16 12:29:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2020-10-16 12:29:33,576 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 15 [2020-10-16 12:29:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:33,576 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2020-10-16 12:29:33,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2020-10-16 12:29:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:33,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:33,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:33,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-16 12:29:33,787 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2032250561, now seen corresponding path program 191 times [2020-10-16 12:29:33,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:33,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215595377] [2020-10-16 12:29:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:33,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215595377] [2020-10-16 12:29:33,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745413696] [2020-10-16 12:29:33,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:34,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:34,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:34,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:34,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:34,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:34,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:34,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [618753651] [2020-10-16 12:29:34,232 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:34,233 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:34,236 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:34,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:34,239 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,239 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,287 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,287 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,326 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,326 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,340 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,340 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,347 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [139666#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:34,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:34,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:34,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:34,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:34,348 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 12 states. [2020-10-16 12:29:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:34,690 INFO L93 Difference]: Finished difference Result 308 states and 724 transitions. [2020-10-16 12:29:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:29:34,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:34,693 INFO L225 Difference]: With dead ends: 308 [2020-10-16 12:29:34,693 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 12:29:34,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:29:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 12:29:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 251. [2020-10-16 12:29:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-16 12:29:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 615 transitions. [2020-10-16 12:29:34,697 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 615 transitions. Word has length 15 [2020-10-16 12:29:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:34,697 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 615 transitions. [2020-10-16 12:29:34,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 615 transitions. [2020-10-16 12:29:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:34,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:34,711 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:34,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:34,912 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2032249600, now seen corresponding path program 192 times [2020-10-16 12:29:34,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:34,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407897108] [2020-10-16 12:29:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:35,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407897108] [2020-10-16 12:29:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845166250] [2020-10-16 12:29:35,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:35,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:35,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:35,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:35,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:35,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2103858580] [2020-10-16 12:29:35,461 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:35,462 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:35,466 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:35,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:35,469 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,469 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,515 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,515 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,549 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,549 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,563 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,572 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [140552#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:35,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:35,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:35,574 INFO L87 Difference]: Start difference. First operand 251 states and 615 transitions. Second operand 12 states. [2020-10-16 12:29:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:35,912 INFO L93 Difference]: Finished difference Result 324 states and 754 transitions. [2020-10-16 12:29:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:35,913 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:35,914 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:29:35,914 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:29:35,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:29:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 249. [2020-10-16 12:29:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-16 12:29:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 609 transitions. [2020-10-16 12:29:35,919 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 609 transitions. Word has length 15 [2020-10-16 12:29:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:35,920 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 609 transitions. [2020-10-16 12:29:35,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 609 transitions. [2020-10-16 12:29:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:35,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:35,920 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:36,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2020-10-16 12:29:36,121 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2032220770, now seen corresponding path program 193 times [2020-10-16 12:29:36,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:36,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194374684] [2020-10-16 12:29:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:36,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194374684] [2020-10-16 12:29:36,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562885258] [2020-10-16 12:29:36,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:36,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:36,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:36,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:36,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:36,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1429192428] [2020-10-16 12:29:36,578 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:36,579 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:36,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:36,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:36,585 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,586 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,669 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,681 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,681 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,691 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [141448#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:36,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:36,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:36,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:36,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:36,692 INFO L87 Difference]: Start difference. First operand 249 states and 609 transitions. Second operand 12 states. [2020-10-16 12:29:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:36,961 INFO L93 Difference]: Finished difference Result 311 states and 730 transitions. [2020-10-16 12:29:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:36,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:36,962 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:29:36,963 INFO L226 Difference]: Without dead ends: 300 [2020-10-16 12:29:36,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-16 12:29:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 249. [2020-10-16 12:29:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-16 12:29:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 610 transitions. [2020-10-16 12:29:36,967 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 610 transitions. Word has length 15 [2020-10-16 12:29:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:36,967 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 610 transitions. [2020-10-16 12:29:36,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 610 transitions. [2020-10-16 12:29:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:36,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:36,968 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:37,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:37,169 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:37,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2032219809, now seen corresponding path program 194 times [2020-10-16 12:29:37,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958832422] [2020-10-16 12:29:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:37,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958832422] [2020-10-16 12:29:37,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748895042] [2020-10-16 12:29:37,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:37,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:37,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:37,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:37,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:37,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:37,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:37,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [399418239] [2020-10-16 12:29:37,786 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:37,788 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:37,793 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:37,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:37,798 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,877 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,877 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,932 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,956 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,956 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,966 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [142329#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:37,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:37,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:37,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:37,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:37,967 INFO L87 Difference]: Start difference. First operand 249 states and 610 transitions. Second operand 12 states. [2020-10-16 12:29:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:38,309 INFO L93 Difference]: Finished difference Result 310 states and 722 transitions. [2020-10-16 12:29:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:38,310 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:38,311 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:29:38,311 INFO L226 Difference]: Without dead ends: 297 [2020-10-16 12:29:38,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-16 12:29:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 247. [2020-10-16 12:29:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-16 12:29:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 604 transitions. [2020-10-16 12:29:38,316 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 604 transitions. Word has length 15 [2020-10-16 12:29:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:38,316 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 604 transitions. [2020-10-16 12:29:38,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 604 transitions. [2020-10-16 12:29:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:38,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:38,316 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:38,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:38,517 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2031327040, now seen corresponding path program 195 times [2020-10-16 12:29:38,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:38,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070577744] [2020-10-16 12:29:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:38,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070577744] [2020-10-16 12:29:38,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625147133] [2020-10-16 12:29:38,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:38,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:38,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:38,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:38,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:38,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:38,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:38,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [603028625] [2020-10-16 12:29:38,994 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:38,994 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:38,997 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:38,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:38,999 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,044 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,044 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,084 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,084 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,095 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,096 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,104 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [143205#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:39,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:39,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:39,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:39,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:39,105 INFO L87 Difference]: Start difference. First operand 247 states and 604 transitions. Second operand 12 states. [2020-10-16 12:29:39,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:39,413 INFO L93 Difference]: Finished difference Result 316 states and 738 transitions. [2020-10-16 12:29:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:39,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:39,416 INFO L225 Difference]: With dead ends: 316 [2020-10-16 12:29:39,416 INFO L226 Difference]: Without dead ends: 305 [2020-10-16 12:29:39,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-16 12:29:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 251. [2020-10-16 12:29:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-16 12:29:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 611 transitions. [2020-10-16 12:29:39,421 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 611 transitions. Word has length 15 [2020-10-16 12:29:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:39,422 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 611 transitions. [2020-10-16 12:29:39,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 611 transitions. [2020-10-16 12:29:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:39,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:39,422 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:39,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:39,623 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2031326079, now seen corresponding path program 196 times [2020-10-16 12:29:39,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690164179] [2020-10-16 12:29:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:39,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690164179] [2020-10-16 12:29:39,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726102980] [2020-10-16 12:29:39,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:39,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:39,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:39,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:39,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:40,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [766779091] [2020-10-16 12:29:40,135 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:40,136 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:40,139 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:40,139 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:40,142 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,142 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,226 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,227 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,237 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,243 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [144097#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:40,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:40,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:40,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:40,244 INFO L87 Difference]: Start difference. First operand 251 states and 611 transitions. Second operand 12 states. [2020-10-16 12:29:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:40,542 INFO L93 Difference]: Finished difference Result 305 states and 709 transitions. [2020-10-16 12:29:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:40,543 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:40,543 INFO L225 Difference]: With dead ends: 305 [2020-10-16 12:29:40,544 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 12:29:40,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 12:29:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 250. [2020-10-16 12:29:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-16 12:29:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 608 transitions. [2020-10-16 12:29:40,549 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 608 transitions. Word has length 15 [2020-10-16 12:29:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:40,549 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 608 transitions. [2020-10-16 12:29:40,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 608 transitions. [2020-10-16 12:29:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:40,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:40,550 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:40,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:40,757 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2031297249, now seen corresponding path program 197 times [2020-10-16 12:29:40,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:40,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784725413] [2020-10-16 12:29:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784725413] [2020-10-16 12:29:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666702440] [2020-10-16 12:29:40,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:40,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:40,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:40,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:40,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:41,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:41,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:41,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [914316473] [2020-10-16 12:29:41,212 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:41,213 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:41,216 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:41,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:41,219 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,219 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,265 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,266 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,307 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,307 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,319 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,319 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,328 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [144974#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:41,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:41,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:41,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:41,329 INFO L87 Difference]: Start difference. First operand 250 states and 608 transitions. Second operand 12 states. [2020-10-16 12:29:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:41,652 INFO L93 Difference]: Finished difference Result 303 states and 705 transitions. [2020-10-16 12:29:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:41,653 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:41,654 INFO L225 Difference]: With dead ends: 303 [2020-10-16 12:29:41,654 INFO L226 Difference]: Without dead ends: 292 [2020-10-16 12:29:41,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-16 12:29:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 247. [2020-10-16 12:29:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-16 12:29:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 602 transitions. [2020-10-16 12:29:41,659 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 602 transitions. Word has length 15 [2020-10-16 12:29:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:41,659 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 602 transitions. [2020-10-16 12:29:41,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 602 transitions. [2020-10-16 12:29:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:41,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:41,660 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:41,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-16 12:29:41,861 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:41,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1173376031, now seen corresponding path program 198 times [2020-10-16 12:29:41,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:41,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108778873] [2020-10-16 12:29:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108778873] [2020-10-16 12:29:42,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093742707] [2020-10-16 12:29:42,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:42,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:29:42,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:42,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:42,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:42,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1695820764] [2020-10-16 12:29:42,351 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:42,352 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:42,356 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:42,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:42,359 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,359 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,413 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,450 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,451 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,501 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,502 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,537 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,548 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,548 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [145843#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 145844#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:42,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:42,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:42,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:42,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:42,557 INFO L87 Difference]: Start difference. First operand 247 states and 602 transitions. Second operand 13 states. [2020-10-16 12:29:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:42,822 INFO L93 Difference]: Finished difference Result 311 states and 719 transitions. [2020-10-16 12:29:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:42,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:42,824 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:29:42,824 INFO L226 Difference]: Without dead ends: 308 [2020-10-16 12:29:42,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-16 12:29:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 250. [2020-10-16 12:29:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-16 12:29:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 610 transitions. [2020-10-16 12:29:42,829 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 610 transitions. Word has length 15 [2020-10-16 12:29:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:42,829 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 610 transitions. [2020-10-16 12:29:42,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 610 transitions. [2020-10-16 12:29:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:42,830 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:43,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-10-16 12:29:43,031 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1173375070, now seen corresponding path program 199 times [2020-10-16 12:29:43,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:43,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598369276] [2020-10-16 12:29:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598369276] [2020-10-16 12:29:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427511784] [2020-10-16 12:29:43,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:43,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:43,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:43,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:43,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:43,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [672722428] [2020-10-16 12:29:43,631 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:43,632 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:43,636 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:43,636 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:43,641 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,641 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,746 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,746 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,783 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,784 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,794 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,808 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,818 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [146726#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1)), 146725#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1))] [2020-10-16 12:29:43,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:43,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:43,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:43,819 INFO L87 Difference]: Start difference. First operand 250 states and 610 transitions. Second operand 13 states. [2020-10-16 12:29:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:44,123 INFO L93 Difference]: Finished difference Result 332 states and 763 transitions. [2020-10-16 12:29:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:44,124 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:44,125 INFO L225 Difference]: With dead ends: 332 [2020-10-16 12:29:44,125 INFO L226 Difference]: Without dead ends: 320 [2020-10-16 12:29:44,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-16 12:29:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 253. [2020-10-16 12:29:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-16 12:29:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 615 transitions. [2020-10-16 12:29:44,130 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 615 transitions. Word has length 15 [2020-10-16 12:29:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:44,131 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 615 transitions. [2020-10-16 12:29:44,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 615 transitions. [2020-10-16 12:29:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:44,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:44,131 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:44,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-16 12:29:44,332 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1173346240, now seen corresponding path program 200 times [2020-10-16 12:29:44,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:44,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983982945] [2020-10-16 12:29:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:44,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983982945] [2020-10-16 12:29:44,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023530272] [2020-10-16 12:29:44,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:44,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:44,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:44,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:44,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:45,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:45,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [854235789] [2020-10-16 12:29:45,434 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:45,435 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:45,438 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:45,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:45,456 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,456 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,501 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,502 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,546 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,546 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,579 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,579 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,586 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,600 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,606 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [147634#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 147635#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:45,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:45,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:45,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:45,607 INFO L87 Difference]: Start difference. First operand 253 states and 615 transitions. Second operand 13 states. [2020-10-16 12:29:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:45,858 INFO L93 Difference]: Finished difference Result 329 states and 757 transitions. [2020-10-16 12:29:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:45,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:45,860 INFO L225 Difference]: With dead ends: 329 [2020-10-16 12:29:45,861 INFO L226 Difference]: Without dead ends: 318 [2020-10-16 12:29:45,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-16 12:29:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 254. [2020-10-16 12:29:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 12:29:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 618 transitions. [2020-10-16 12:29:45,865 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 618 transitions. Word has length 15 [2020-10-16 12:29:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:45,865 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 618 transitions. [2020-10-16 12:29:45,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 618 transitions. [2020-10-16 12:29:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:45,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:45,866 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:46,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-16 12:29:46,067 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:46,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1173345279, now seen corresponding path program 201 times [2020-10-16 12:29:46,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:46,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332584920] [2020-10-16 12:29:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:46,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332584920] [2020-10-16 12:29:46,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855076301] [2020-10-16 12:29:46,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:46,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:46,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:46,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:46,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:49,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:49,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:49,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [136367659] [2020-10-16 12:29:49,807 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:49,808 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:49,811 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:49,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:49,817 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,817 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,869 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,918 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,918 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,952 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,964 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,965 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,975 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,976 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,985 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [148542#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 148543#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:49,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:49,987 INFO L87 Difference]: Start difference. First operand 254 states and 618 transitions. Second operand 13 states. [2020-10-16 12:29:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:50,303 INFO L93 Difference]: Finished difference Result 319 states and 733 transitions. [2020-10-16 12:29:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:50,304 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:50,305 INFO L225 Difference]: With dead ends: 319 [2020-10-16 12:29:50,305 INFO L226 Difference]: Without dead ends: 306 [2020-10-16 12:29:50,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-16 12:29:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 251. [2020-10-16 12:29:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-16 12:29:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 610 transitions. [2020-10-16 12:29:50,311 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 610 transitions. Word has length 15 [2020-10-16 12:29:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:50,311 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 610 transitions. [2020-10-16 12:29:50,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 610 transitions. [2020-10-16 12:29:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:50,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:50,312 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:50,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:50,512 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:50,513 INFO L82 PathProgramCache]: Analyzing trace with hash 439566480, now seen corresponding path program 202 times [2020-10-16 12:29:50,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:50,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000690213] [2020-10-16 12:29:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:50,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000690213] [2020-10-16 12:29:50,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260511788] [2020-10-16 12:29:50,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:50,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:50,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:50,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:50,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:51,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:51,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [838255113] [2020-10-16 12:29:51,036 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:51,036 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:51,040 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 12:29:51,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:51,053 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:51,053 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:51,067 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:51,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:51,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:51,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:51,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:51,069 INFO L87 Difference]: Start difference. First operand 251 states and 610 transitions. Second operand 11 states. [2020-10-16 12:29:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:51,193 INFO L93 Difference]: Finished difference Result 320 states and 742 transitions. [2020-10-16 12:29:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:51,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:51,195 INFO L225 Difference]: With dead ends: 320 [2020-10-16 12:29:51,195 INFO L226 Difference]: Without dead ends: 318 [2020-10-16 12:29:51,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-16 12:29:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 257. [2020-10-16 12:29:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-16 12:29:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 628 transitions. [2020-10-16 12:29:51,201 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 628 transitions. Word has length 15 [2020-10-16 12:29:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:51,201 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 628 transitions. [2020-10-16 12:29:51,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 628 transitions. [2020-10-16 12:29:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:51,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:51,202 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:51,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-16 12:29:51,403 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash 439595310, now seen corresponding path program 203 times [2020-10-16 12:29:51,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:51,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052999906] [2020-10-16 12:29:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052999906] [2020-10-16 12:29:51,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596471843] [2020-10-16 12:29:51,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:51,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:51,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:51,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:51,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:53,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:53,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1480579007] [2020-10-16 12:29:53,137 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:53,137 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:53,140 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-10-16 12:29:53,140 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:53,155 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:53,155 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:53,165 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:53,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:53,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:53,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:53,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:53,166 INFO L87 Difference]: Start difference. First operand 257 states and 628 transitions. Second operand 11 states. [2020-10-16 12:29:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:53,350 INFO L93 Difference]: Finished difference Result 324 states and 753 transitions. [2020-10-16 12:29:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:53,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:53,351 INFO L225 Difference]: With dead ends: 324 [2020-10-16 12:29:53,351 INFO L226 Difference]: Without dead ends: 322 [2020-10-16 12:29:53,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-16 12:29:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 258. [2020-10-16 12:29:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-16 12:29:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 631 transitions. [2020-10-16 12:29:53,356 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 631 transitions. Word has length 15 [2020-10-16 12:29:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:53,356 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 631 transitions. [2020-10-16 12:29:53,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 631 transitions. [2020-10-16 12:29:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:53,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:53,356 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:53,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:53,557 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash 439596271, now seen corresponding path program 204 times [2020-10-16 12:29:53,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:53,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006491758] [2020-10-16 12:29:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006491758] [2020-10-16 12:29:53,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673973714] [2020-10-16 12:29:53,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:53,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:53,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:53,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:53,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:54,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:54,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1019444645] [2020-10-16 12:29:54,076 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:54,076 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:54,080 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-10-16 12:29:54,080 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:54,101 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:54,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:54,110 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:54,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:54,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:54,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:54,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:54,111 INFO L87 Difference]: Start difference. First operand 258 states and 631 transitions. Second operand 11 states. [2020-10-16 12:29:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:54,292 INFO L93 Difference]: Finished difference Result 339 states and 788 transitions. [2020-10-16 12:29:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:54,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:54,294 INFO L225 Difference]: With dead ends: 339 [2020-10-16 12:29:54,294 INFO L226 Difference]: Without dead ends: 336 [2020-10-16 12:29:54,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-16 12:29:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 255. [2020-10-16 12:29:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-16 12:29:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 622 transitions. [2020-10-16 12:29:54,309 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 622 transitions. Word has length 15 [2020-10-16 12:29:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:54,309 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 622 transitions. [2020-10-16 12:29:54,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 622 transitions. [2020-10-16 12:29:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:54,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:54,310 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:54,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2020-10-16 12:29:54,511 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash 440489040, now seen corresponding path program 205 times [2020-10-16 12:29:54,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:54,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658149980] [2020-10-16 12:29:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658149980] [2020-10-16 12:29:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474174436] [2020-10-16 12:29:54,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:54,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:54,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:55,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:55,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:55,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [581782205] [2020-10-16 12:29:55,107 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:55,108 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:55,111 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:55,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:55,121 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:55,122 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:55,144 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:55,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:55,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:55,145 INFO L87 Difference]: Start difference. First operand 255 states and 622 transitions. Second operand 11 states. [2020-10-16 12:29:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:55,411 INFO L93 Difference]: Finished difference Result 323 states and 750 transitions. [2020-10-16 12:29:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:55,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:55,413 INFO L225 Difference]: With dead ends: 323 [2020-10-16 12:29:55,413 INFO L226 Difference]: Without dead ends: 321 [2020-10-16 12:29:55,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-16 12:29:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 257. [2020-10-16 12:29:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-16 12:29:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 628 transitions. [2020-10-16 12:29:55,419 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 628 transitions. Word has length 15 [2020-10-16 12:29:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:55,419 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 628 transitions. [2020-10-16 12:29:55,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 628 transitions. [2020-10-16 12:29:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:55,420 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:55,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:55,621 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 440490001, now seen corresponding path program 206 times [2020-10-16 12:29:55,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:55,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689150374] [2020-10-16 12:29:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:55,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689150374] [2020-10-16 12:29:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656476394] [2020-10-16 12:29:55,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:55,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:55,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:57,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:57,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:57,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1726623654] [2020-10-16 12:29:57,603 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:57,604 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:57,606 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:57,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:57,613 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:57,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:57,631 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:57,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:57,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:57,633 INFO L87 Difference]: Start difference. First operand 257 states and 628 transitions. Second operand 11 states. [2020-10-16 12:29:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:57,882 INFO L93 Difference]: Finished difference Result 342 states and 794 transitions. [2020-10-16 12:29:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:57,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:57,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:57,884 INFO L225 Difference]: With dead ends: 342 [2020-10-16 12:29:57,884 INFO L226 Difference]: Without dead ends: 339 [2020-10-16 12:29:57,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-16 12:29:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 256. [2020-10-16 12:29:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:29:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 625 transitions. [2020-10-16 12:29:57,889 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 625 transitions. Word has length 15 [2020-10-16 12:29:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:57,889 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 625 transitions. [2020-10-16 12:29:57,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 625 transitions. [2020-10-16 12:29:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:57,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:57,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:58,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2020-10-16 12:29:58,091 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:58,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:58,091 INFO L82 PathProgramCache]: Analyzing trace with hash 440518831, now seen corresponding path program 207 times [2020-10-16 12:29:58,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:58,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112000265] [2020-10-16 12:29:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:58,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112000265] [2020-10-16 12:29:58,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976384479] [2020-10-16 12:29:58,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:58,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:58,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:58,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:58,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:58,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:58,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1224160078] [2020-10-16 12:29:58,716 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:58,717 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:58,719 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:58,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:58,741 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:58,741 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:58,759 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:58,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:58,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:58,760 INFO L87 Difference]: Start difference. First operand 256 states and 625 transitions. Second operand 11 states. [2020-10-16 12:29:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:59,009 INFO L93 Difference]: Finished difference Result 344 states and 799 transitions. [2020-10-16 12:29:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:59,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:59,011 INFO L225 Difference]: With dead ends: 344 [2020-10-16 12:29:59,012 INFO L226 Difference]: Without dead ends: 341 [2020-10-16 12:29:59,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-16 12:29:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 257. [2020-10-16 12:29:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-16 12:29:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 628 transitions. [2020-10-16 12:29:59,016 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 628 transitions. Word has length 15 [2020-10-16 12:29:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:59,016 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 628 transitions. [2020-10-16 12:29:59,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 628 transitions. [2020-10-16 12:29:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:59,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:59,017 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:59,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:59,218 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:59,219 INFO L82 PathProgramCache]: Analyzing trace with hash 440519792, now seen corresponding path program 208 times [2020-10-16 12:29:59,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:59,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393464106] [2020-10-16 12:29:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393464106] [2020-10-16 12:29:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74912464] [2020-10-16 12:29:59,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:59,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:59,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:59,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:59,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:59,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:59,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:59,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2085335883] [2020-10-16 12:29:59,778 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:59,779 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:59,781 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:59,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:59,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:59,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:59,812 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:59,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:59,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:59,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:59,813 INFO L87 Difference]: Start difference. First operand 257 states and 628 transitions. Second operand 11 states. [2020-10-16 12:30:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:00,063 INFO L93 Difference]: Finished difference Result 350 states and 809 transitions. [2020-10-16 12:30:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:00,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:00,065 INFO L225 Difference]: With dead ends: 350 [2020-10-16 12:30:00,065 INFO L226 Difference]: Without dead ends: 346 [2020-10-16 12:30:00,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:30:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-16 12:30:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 253. [2020-10-16 12:30:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-16 12:30:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 616 transitions. [2020-10-16 12:30:00,069 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 616 transitions. Word has length 15 [2020-10-16 12:30:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:00,070 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 616 transitions. [2020-10-16 12:30:00,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 616 transitions. [2020-10-16 12:30:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:00,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:00,070 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:00,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-10-16 12:30:00,271 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash 468194670, now seen corresponding path program 209 times [2020-10-16 12:30:00,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:00,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942255892] [2020-10-16 12:30:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:00,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942255892] [2020-10-16 12:30:00,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682222783] [2020-10-16 12:30:00,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:00,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:30:00,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:00,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:00,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:04,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:04,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:04,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [831297720] [2020-10-16 12:30:04,159 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:04,159 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:04,162 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:04,162 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:04,167 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:04,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:04,186 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:04,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:04,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:04,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:04,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:04,187 INFO L87 Difference]: Start difference. First operand 253 states and 616 transitions. Second operand 11 states. [2020-10-16 12:30:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:04,495 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2020-10-16 12:30:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:04,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:04,497 INFO L225 Difference]: With dead ends: 318 [2020-10-16 12:30:04,497 INFO L226 Difference]: Without dead ends: 316 [2020-10-16 12:30:04,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-16 12:30:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 256. [2020-10-16 12:30:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:30:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 625 transitions. [2020-10-16 12:30:04,502 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 625 transitions. Word has length 15 [2020-10-16 12:30:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:04,502 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 625 transitions. [2020-10-16 12:30:04,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 625 transitions. [2020-10-16 12:30:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:04,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:04,503 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:04,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-16 12:30:04,703 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash 468195631, now seen corresponding path program 210 times [2020-10-16 12:30:04,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:04,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409686727] [2020-10-16 12:30:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:04,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409686727] [2020-10-16 12:30:04,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504420530] [2020-10-16 12:30:04,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:04,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:30:04,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:04,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:04,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:05,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:05,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:05,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [875617323] [2020-10-16 12:30:05,313 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:05,314 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:05,316 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:05,316 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:05,323 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:05,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:05,341 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:05,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:05,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:05,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:05,343 INFO L87 Difference]: Start difference. First operand 256 states and 625 transitions. Second operand 11 states. [2020-10-16 12:30:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:05,654 INFO L93 Difference]: Finished difference Result 340 states and 788 transitions. [2020-10-16 12:30:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:05,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:05,656 INFO L225 Difference]: With dead ends: 340 [2020-10-16 12:30:05,657 INFO L226 Difference]: Without dead ends: 337 [2020-10-16 12:30:05,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-16 12:30:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 255. [2020-10-16 12:30:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-16 12:30:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 622 transitions. [2020-10-16 12:30:05,662 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 622 transitions. Word has length 15 [2020-10-16 12:30:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:05,662 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 622 transitions. [2020-10-16 12:30:05,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 622 transitions. [2020-10-16 12:30:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:05,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:05,663 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:05,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-16 12:30:05,864 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash 468224461, now seen corresponding path program 211 times [2020-10-16 12:30:05,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:05,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900848206] [2020-10-16 12:30:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:06,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900848206] [2020-10-16 12:30:06,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406842070] [2020-10-16 12:30:06,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:10,889 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-16 12:30:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:13,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:13,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:13,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1471487070] [2020-10-16 12:30:13,992 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:13,993 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:13,996 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:13,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:14,003 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:14,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:14,021 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:14,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:14,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:14,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:14,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=252, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:30:14,022 INFO L87 Difference]: Start difference. First operand 255 states and 622 transitions. Second operand 11 states. [2020-10-16 12:30:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:15,228 INFO L93 Difference]: Finished difference Result 338 states and 784 transitions. [2020-10-16 12:30:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:15,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:15,230 INFO L225 Difference]: With dead ends: 338 [2020-10-16 12:30:15,230 INFO L226 Difference]: Without dead ends: 335 [2020-10-16 12:30:15,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=162, Invalid=389, Unknown=1, NotChecked=0, Total=552 [2020-10-16 12:30:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-16 12:30:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 256. [2020-10-16 12:30:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:30:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 625 transitions. [2020-10-16 12:30:15,237 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 625 transitions. Word has length 15 [2020-10-16 12:30:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:15,238 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 625 transitions. [2020-10-16 12:30:15,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 625 transitions. [2020-10-16 12:30:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:15,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:15,241 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:15,442 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash 468225422, now seen corresponding path program 212 times [2020-10-16 12:30:15,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:15,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552128562] [2020-10-16 12:30:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:15,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552128562] [2020-10-16 12:30:15,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155924644] [2020-10-16 12:30:15,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:15,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:15,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:15,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:15,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:19,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:19,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:19,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [598229454] [2020-10-16 12:30:19,292 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:19,293 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:19,296 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:19,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:19,308 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:19,309 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:19,327 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:19,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:19,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:19,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=257, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:30:19,329 INFO L87 Difference]: Start difference. First operand 256 states and 625 transitions. Second operand 11 states. [2020-10-16 12:30:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:19,629 INFO L93 Difference]: Finished difference Result 352 states and 812 transitions. [2020-10-16 12:30:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:19,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:19,631 INFO L225 Difference]: With dead ends: 352 [2020-10-16 12:30:19,631 INFO L226 Difference]: Without dead ends: 348 [2020-10-16 12:30:19,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=161, Invalid=390, Unknown=1, NotChecked=0, Total=552 [2020-10-16 12:30:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-16 12:30:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 254. [2020-10-16 12:30:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 12:30:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 619 transitions. [2020-10-16 12:30:19,635 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 619 transitions. Word has length 15 [2020-10-16 12:30:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:19,636 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 619 transitions. [2020-10-16 12:30:19,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 619 transitions. [2020-10-16 12:30:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:19,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:19,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:19,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-16 12:30:19,837 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash 469118191, now seen corresponding path program 213 times [2020-10-16 12:30:19,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:19,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16113416] [2020-10-16 12:30:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16113416] [2020-10-16 12:30:20,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984333299] [2020-10-16 12:30:20,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:20,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:30:20,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:20,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:21,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [611440660] [2020-10-16 12:30:21,292 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:21,292 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:21,295 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:21,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:21,300 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:21,300 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:21,315 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:21,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:21,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:21,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:21,316 INFO L87 Difference]: Start difference. First operand 254 states and 619 transitions. Second operand 11 states. [2020-10-16 12:30:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:21,604 INFO L93 Difference]: Finished difference Result 340 states and 787 transitions. [2020-10-16 12:30:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:30:21,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:21,605 INFO L225 Difference]: With dead ends: 340 [2020-10-16 12:30:21,605 INFO L226 Difference]: Without dead ends: 337 [2020-10-16 12:30:21,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:30:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-16 12:30:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 256. [2020-10-16 12:30:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:30:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 625 transitions. [2020-10-16 12:30:21,609 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 625 transitions. Word has length 15 [2020-10-16 12:30:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:21,610 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 625 transitions. [2020-10-16 12:30:21,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 625 transitions. [2020-10-16 12:30:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:21,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:21,610 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:21,811 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 469119152, now seen corresponding path program 214 times [2020-10-16 12:30:21,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779760835] [2020-10-16 12:30:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779760835] [2020-10-16 12:30:21,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592589466] [2020-10-16 12:30:21,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:22,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:22,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:22,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:22,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:22,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:22,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:22,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [331196575] [2020-10-16 12:30:22,364 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:22,365 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:22,378 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:22,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:22,383 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:22,384 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:22,403 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:22,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:22,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:22,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:22,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:22,404 INFO L87 Difference]: Start difference. First operand 256 states and 625 transitions. Second operand 11 states. [2020-10-16 12:30:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:22,666 INFO L93 Difference]: Finished difference Result 354 states and 819 transitions. [2020-10-16 12:30:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:22,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:22,668 INFO L225 Difference]: With dead ends: 354 [2020-10-16 12:30:22,668 INFO L226 Difference]: Without dead ends: 350 [2020-10-16 12:30:22,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-16 12:30:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 255. [2020-10-16 12:30:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-16 12:30:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 622 transitions. [2020-10-16 12:30:22,672 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 622 transitions. Word has length 15 [2020-10-16 12:30:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:22,673 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 622 transitions. [2020-10-16 12:30:22,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 622 transitions. [2020-10-16 12:30:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:22,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:22,673 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:22,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2020-10-16 12:30:22,874 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 469147982, now seen corresponding path program 215 times [2020-10-16 12:30:22,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578970095] [2020-10-16 12:30:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:23,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578970095] [2020-10-16 12:30:23,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854494935] [2020-10-16 12:30:23,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:23,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:30:23,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:23,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:23,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:23,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:23,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:23,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1279516536] [2020-10-16 12:30:23,440 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:23,441 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:23,444 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:23,444 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:23,448 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:23,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:23,466 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:23,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:23,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:23,467 INFO L87 Difference]: Start difference. First operand 255 states and 622 transitions. Second operand 11 states. [2020-10-16 12:30:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:23,743 INFO L93 Difference]: Finished difference Result 353 states and 817 transitions. [2020-10-16 12:30:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:23,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:23,745 INFO L225 Difference]: With dead ends: 353 [2020-10-16 12:30:23,745 INFO L226 Difference]: Without dead ends: 349 [2020-10-16 12:30:23,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-16 12:30:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 256. [2020-10-16 12:30:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:30:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 625 transitions. [2020-10-16 12:30:23,750 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 625 transitions. Word has length 15 [2020-10-16 12:30:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:23,750 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 625 transitions. [2020-10-16 12:30:23,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 625 transitions. [2020-10-16 12:30:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:23,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:23,751 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:23,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:23,952 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash 469148943, now seen corresponding path program 216 times [2020-10-16 12:30:23,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:23,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423929921] [2020-10-16 12:30:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:24,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423929921] [2020-10-16 12:30:24,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890993019] [2020-10-16 12:30:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:24,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:30:24,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:24,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:24,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:24,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:24,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:24,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1819422025] [2020-10-16 12:30:24,412 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:24,413 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:24,415 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:24,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:24,420 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:24,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:24,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:24,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:24,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:24,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:24,439 INFO L87 Difference]: Start difference. First operand 256 states and 625 transitions. Second operand 11 states. [2020-10-16 12:30:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:24,710 INFO L93 Difference]: Finished difference Result 343 states and 787 transitions. [2020-10-16 12:30:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:24,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:24,711 INFO L225 Difference]: With dead ends: 343 [2020-10-16 12:30:24,711 INFO L226 Difference]: Without dead ends: 327 [2020-10-16 12:30:24,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-16 12:30:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 251. [2020-10-16 12:30:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-16 12:30:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 610 transitions. [2020-10-16 12:30:24,715 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 610 transitions. Word has length 15 [2020-10-16 12:30:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:24,716 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 610 transitions. [2020-10-16 12:30:24,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 610 transitions. [2020-10-16 12:30:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:24,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:24,716 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:24,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2020-10-16 12:30:24,920 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1327069200, now seen corresponding path program 217 times [2020-10-16 12:30:24,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:24,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385401019] [2020-10-16 12:30:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:25,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385401019] [2020-10-16 12:30:25,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090573057] [2020-10-16 12:30:25,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:25,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:25,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:25,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2004626329] [2020-10-16 12:30:25,371 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:25,372 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:25,375 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:25,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:25,378 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:25,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:25,389 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:25,389 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:25,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [163223#(and (<= (+ ~i~0 (* 5 ~j~0)) 17) (< ~i~0 144))] [2020-10-16 12:30:25,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:25,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:25,439 INFO L87 Difference]: Start difference. First operand 251 states and 610 transitions. Second operand 12 states. [2020-10-16 12:30:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:25,800 INFO L93 Difference]: Finished difference Result 331 states and 757 transitions. [2020-10-16 12:30:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:25,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:25,802 INFO L225 Difference]: With dead ends: 331 [2020-10-16 12:30:25,802 INFO L226 Difference]: Without dead ends: 329 [2020-10-16 12:30:25,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-16 12:30:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 256. [2020-10-16 12:30:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-16 12:30:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 624 transitions. [2020-10-16 12:30:25,806 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 624 transitions. Word has length 15 [2020-10-16 12:30:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 624 transitions. [2020-10-16 12:30:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 624 transitions. [2020-10-16 12:30:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:25,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:25,807 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:26,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:26,008 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1327070161, now seen corresponding path program 218 times [2020-10-16 12:30:26,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:26,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050342321] [2020-10-16 12:30:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:26,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050342321] [2020-10-16 12:30:26,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054344443] [2020-10-16 12:30:26,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:26,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:26,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:26,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:26,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:26,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:26,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:26,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [515307128] [2020-10-16 12:30:26,478 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:26,479 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:26,481 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:26,481 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:26,485 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:26,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:26,499 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:26,500 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:26,546 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [164142#(and (<= (+ (* 2 ~i~0) (* 7 ~j~0)) 25) (< ~i~0 144))] [2020-10-16 12:30:26,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:26,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:26,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:26,547 INFO L87 Difference]: Start difference. First operand 256 states and 624 transitions. Second operand 12 states. [2020-10-16 12:30:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:26,932 INFO L93 Difference]: Finished difference Result 360 states and 824 transitions. [2020-10-16 12:30:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:26,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:26,933 INFO L225 Difference]: With dead ends: 360 [2020-10-16 12:30:26,933 INFO L226 Difference]: Without dead ends: 357 [2020-10-16 12:30:26,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-16 12:30:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 259. [2020-10-16 12:30:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-16 12:30:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 633 transitions. [2020-10-16 12:30:26,938 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 633 transitions. Word has length 15 [2020-10-16 12:30:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:26,938 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 633 transitions. [2020-10-16 12:30:26,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 633 transitions. [2020-10-16 12:30:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:26,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:26,939 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:27,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:27,140 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:27,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1327098991, now seen corresponding path program 219 times [2020-10-16 12:30:27,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:27,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535563556] [2020-10-16 12:30:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:27,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535563556] [2020-10-16 12:30:27,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052035690] [2020-10-16 12:30:27,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:27,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:30:27,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:27,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:27,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:28,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:28,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:28,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [428403424] [2020-10-16 12:30:28,237 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:28,238 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:28,240 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:28,240 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:28,241 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:28,241 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts Received shutdown request... [2020-10-16 12:30:28,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-16 12:30:28,470 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:30:28,475 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:30:28,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:28 BasicIcfg [2020-10-16 12:30:28,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:28,477 INFO L168 Benchmark]: Toolchain (without parser) took 267969.27 ms. Allocated memory was 140.0 MB in the beginning and 222.3 MB in the end (delta: 82.3 MB). Free memory was 101.3 MB in the beginning and 56.6 MB in the end (delta: 44.7 MB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,477 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.42 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 162.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,478 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,479 INFO L168 Benchmark]: RCFGBuilder took 380.53 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 138.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,479 INFO L168 Benchmark]: TraceAbstraction took 266774.15 ms. Allocated memory was 202.9 MB in the beginning and 222.3 MB in the end (delta: 19.4 MB). Free memory was 137.6 MB in the beginning and 56.6 MB in the end (delta: 81.0 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:28,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.42 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 162.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.53 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 138.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 266774.15 ms. Allocated memory was 202.9 MB in the beginning and 222.3 MB in the end (delta: 19.4 MB). Free memory was 137.6 MB in the beginning and 56.6 MB in the end (delta: 81.0 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 561 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 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 analyzing trace of length 16 with TraceHistMax 4,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 266.6s, OverallIterations: 233, TraceHistogramMax: 7, AutomataDifference: 58.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 3084 SDtfs, 16480 SDslu, 18019 SDs, 0 SdLazy, 12766 SolverSat, 4615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7803 GetRequests, 2404 SyntacticMatches, 648 SemanticMatches, 4751 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29342 ImplicationChecksByTransitivity, 170.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 232 MinimizatonAttempts, 14244 StatesRemovedByMinimization, 230 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 130.6s InterpolantComputationTime, 6296 NumberOfCodeBlocks, 6296 NumberOfCodeBlocksAsserted, 752 NumberOfCheckSat, 5837 ConstructedInterpolants, 43 QuantifiedInterpolants, 725183 SizeOfPredicates, 225 NumberOfNonLiveVariables, 21072 ConjunctsInSsa, 2448 ConjunctsInUnsatCore, 459 InterpolantComputations, 7 PerfectInterpolantSequences, 36/3122 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