/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:29:25,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:29:25,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:29:25,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:29:25,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:29:25,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:29:25,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:29:25,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:29:25,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:29:25,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:29:25,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:29:25,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:29:25,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:29:25,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:29:25,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:29:25,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:29:25,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:29:25,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:29:25,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:29:25,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:29:25,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:29:25,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:29:25,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:29:25,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:29:25,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 21:29:25,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 21:29:25,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 21:29:25,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 21:29:25,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 21:29:25,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 21:29:25,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:29:25,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:29:25,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:29:25,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:29:25,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:29:25,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:29:25,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:29:25,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:29:25,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:29:25,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:29:25,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:29:25,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:29:25,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:29:25,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:29:25,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:29:25,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:29:25,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:29:25,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:29:25,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:29:25,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:29:25,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:29:25,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:29:25,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:29:25,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:29:25,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:29:25,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:29:25,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:29:25,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:29:25,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:29:25,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:29:25,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:29:25,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:29:25,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:29:25,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:29:25,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:29:25,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:29:25,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:29:25,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:29:25,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:29:25,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:29:25,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:29:25,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:29:25,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:29:25,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:29:25,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:29:25,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:29:25,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:29:25,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-21 21:29:25,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360a051f3/df16ba4457044017b398950784d51701/FLAG17cb54f20 [2020-10-21 21:29:26,311 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:29:26,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-21 21:29:26,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360a051f3/df16ba4457044017b398950784d51701/FLAG17cb54f20 [2020-10-21 21:29:26,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360a051f3/df16ba4457044017b398950784d51701 [2020-10-21 21:29:26,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:29:26,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:29:26,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:29:26,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:29:26,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:29:26,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:29:26" (1/1) ... [2020-10-21 21:29:26,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fb6ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:26, skipping insertion in model container [2020-10-21 21:29:26,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:29:26" (1/1) ... [2020-10-21 21:29:26,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:29:26,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:29:27,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:29:27,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:29:27,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:29:27,278 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:29:27,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27 WrapperNode [2020-10-21 21:29:27,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:29:27,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:29:27,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:29:27,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:29:27,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:29:27,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:29:27,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:29:27,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:29:27,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... [2020-10-21 21:29:27,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:29:27,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:29:27,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:29:27,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:29:27,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:29:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-21 21:29:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-21 21:29:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-21 21:29:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-21 21:29:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:29:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 21:29:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:29:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:29:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:29:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 21:29:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:29:27,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:29:27,442 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:29:27,766 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:29:27,766 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-21 21:29:27,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:29:27 BoogieIcfgContainer [2020-10-21 21:29:27,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:29:27,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:29:27,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:29:27,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:29:27,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:29:26" (1/3) ... [2020-10-21 21:29:27,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f0b70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:29:27, skipping insertion in model container [2020-10-21 21:29:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:29:27" (2/3) ... [2020-10-21 21:29:27,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f0b70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:29:27, skipping insertion in model container [2020-10-21 21:29:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:29:27" (3/3) ... [2020-10-21 21:29:27,778 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-1.i [2020-10-21 21:29:27,794 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:29:27,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:29:27,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 21:29:27,803 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:29:27,831 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,832 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,832 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,832 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,833 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,833 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,833 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,833 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,834 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,834 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,834 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,834 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,835 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,836 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,836 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,836 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,836 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,837 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,837 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,837 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,838 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,838 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,838 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,839 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,839 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,839 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,839 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,840 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,843 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,851 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,851 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,852 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,852 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,852 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,852 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:29:27,855 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 21:29:27,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 21:29:27,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:29:27,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:29:27,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:29:27,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:29:27,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:29:27,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:29:27,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:29:27,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:29:27,915 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:29:27,918 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,921 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-21 21:29:27,985 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-21 21:29:27,988 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 21:29:27,995 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-21 21:29:27,999 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-21 21:29:29,264 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-21 21:29:29,699 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 21:29:29,827 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 21:29:29,898 INFO L131 LiptonReduction]: Checked pairs total: 1183 [2020-10-21 21:29:29,899 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-21 21:29:29,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-21 21:29:29,916 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 21:29:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 21:29:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 21:29:29,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:29,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 21:29:29,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:29,933 INFO L82 PathProgramCache]: Analyzing trace with hash -542844556, now seen corresponding path program 1 times [2020-10-21 21:29:29,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:29,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454971951] [2020-10-21 21:29:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454971951] [2020-10-21 21:29:30,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:30,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:29:30,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961089717] [2020-10-21 21:29:30,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:29:30,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:29:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:29:30,190 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-21 21:29:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,274 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-21 21:29:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:29:30,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-21 21:29:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,288 INFO L225 Difference]: With dead ends: 83 [2020-10-21 21:29:30,288 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 21:29:30,290 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 [2020-10-21 21:29:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 21:29:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-21 21:29:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-21 21:29:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-21 21:29:30,331 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-21 21:29:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,332 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-21 21:29:30,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:29:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-21 21:29:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:29:30,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:29:30,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1940739433, now seen corresponding path program 1 times [2020-10-21 21:29:30,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577108376] [2020-10-21 21:29:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577108376] [2020-10-21 21:29:30,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:30,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:29:30,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819497242] [2020-10-21 21:29:30,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:29:30,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:29:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:29:30,461 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-21 21:29:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,527 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-21 21:29:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:29:30,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-21 21:29:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,530 INFO L225 Difference]: With dead ends: 80 [2020-10-21 21:29:30,530 INFO L226 Difference]: Without dead ends: 75 [2020-10-21 21:29:30,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:29:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-21 21:29:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-21 21:29:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-21 21:29:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-21 21:29:30,542 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-21 21:29:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,544 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-21 21:29:30,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:29:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-21 21:29:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:29:30,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:29:30,546 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1981941347, now seen corresponding path program 1 times [2020-10-21 21:29:30,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254966282] [2020-10-21 21:29:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254966282] [2020-10-21 21:29:30,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:30,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:29:30,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588995264] [2020-10-21 21:29:30,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:29:30,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:29:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:29:30,643 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-21 21:29:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:30,706 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-21 21:29:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 21:29:30,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-21 21:29:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:30,708 INFO L225 Difference]: With dead ends: 83 [2020-10-21 21:29:30,708 INFO L226 Difference]: Without dead ends: 77 [2020-10-21 21:29:30,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 21:29:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-21 21:29:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-21 21:29:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 21:29:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-21 21:29:30,719 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-21 21:29:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:30,719 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-21 21:29:30,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:29:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-21 21:29:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:29:30,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:30,721 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:30,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:29:30,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:30,722 INFO L82 PathProgramCache]: Analyzing trace with hash -33351122, now seen corresponding path program 2 times [2020-10-21 21:29:30,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:30,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124526667] [2020-10-21 21:29:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:30,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124526667] [2020-10-21 21:29:30,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190396390] [2020-10-21 21:29:30,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:30,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:30,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:30,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 21:29:30,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:31,043 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:31,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-21 21:29:31,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735146517] [2020-10-21 21:29:31,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 21:29:31,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 21:29:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-21 21:29:31,075 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-21 21:29:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:31,173 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-21 21:29:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:31,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-21 21:29:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:31,175 INFO L225 Difference]: With dead ends: 101 [2020-10-21 21:29:31,175 INFO L226 Difference]: Without dead ends: 96 [2020-10-21 21:29:31,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-21 21:29:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-21 21:29:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-21 21:29:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-21 21:29:31,185 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-21 21:29:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:31,185 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-21 21:29:31,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 21:29:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-21 21:29:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:29:31,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:31,187 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:31,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:31,403 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:31,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1310611417, now seen corresponding path program 2 times [2020-10-21 21:29:31,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:31,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824906695] [2020-10-21 21:29:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824906695] [2020-10-21 21:29:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545430424] [2020-10-21 21:29:31,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:31,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:31,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 21:29:31,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:31,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:31,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:31,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-21 21:29:31,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651639135] [2020-10-21 21:29:31,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:29:31,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:31,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:29:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:31,683 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-21 21:29:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:31,773 INFO L93 Difference]: Finished difference Result 96 states and 231 transitions. [2020-10-21 21:29:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:31,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-21 21:29:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:31,776 INFO L225 Difference]: With dead ends: 96 [2020-10-21 21:29:31,776 INFO L226 Difference]: Without dead ends: 90 [2020-10-21 21:29:31,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:29:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-21 21:29:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-21 21:29:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-21 21:29:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-21 21:29:31,785 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-21 21:29:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:31,786 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-21 21:29:31,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:29:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-21 21:29:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:31,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:31,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:31,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:31,995 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:31,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1043120626, now seen corresponding path program 1 times [2020-10-21 21:29:31,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:31,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904351086] [2020-10-21 21:29:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904351086] [2020-10-21 21:29:32,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:32,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:29:32,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699222862] [2020-10-21 21:29:32,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:29:32,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:29:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:29:32,096 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-21 21:29:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:32,168 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-10-21 21:29:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:32,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-21 21:29:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:32,170 INFO L225 Difference]: With dead ends: 103 [2020-10-21 21:29:32,170 INFO L226 Difference]: Without dead ends: 98 [2020-10-21 21:29:32,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-21 21:29:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-10-21 21:29:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-21 21:29:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-21 21:29:32,178 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 10 [2020-10-21 21:29:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:32,179 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-21 21:29:32,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:29:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-21 21:29:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:32,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:32,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:32,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 21:29:32,181 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:32,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091796, now seen corresponding path program 2 times [2020-10-21 21:29:32,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:32,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139499704] [2020-10-21 21:29:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139499704] [2020-10-21 21:29:32,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:29:32,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:29:32,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288299720] [2020-10-21 21:29:32,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:29:32,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:29:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:29:32,242 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-10-21 21:29:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:32,325 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-10-21 21:29:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 21:29:32,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-21 21:29:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:32,327 INFO L225 Difference]: With dead ends: 103 [2020-10-21 21:29:32,327 INFO L226 Difference]: Without dead ends: 98 [2020-10-21 21:29:32,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-21 21:29:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2020-10-21 21:29:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-21 21:29:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-21 21:29:32,335 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-21 21:29:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:32,336 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-21 21:29:32,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:29:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-21 21:29:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:32,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:32,337 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:32,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 21:29:32,338 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1033855625, now seen corresponding path program 3 times [2020-10-21 21:29:32,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:32,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79892753] [2020-10-21 21:29:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79892753] [2020-10-21 21:29:32,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273391330] [2020-10-21 21:29:32,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:32,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:32,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:32,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:32,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:32,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:32,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 21:29:32,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190896133] [2020-10-21 21:29:32,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 21:29:32,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 21:29:32,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-21 21:29:32,559 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-21 21:29:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:32,649 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-21 21:29:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:32,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-21 21:29:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:32,650 INFO L225 Difference]: With dead ends: 122 [2020-10-21 21:29:32,650 INFO L226 Difference]: Without dead ends: 117 [2020-10-21 21:29:32,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:29:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-21 21:29:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-21 21:29:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-21 21:29:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-21 21:29:32,658 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-21 21:29:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:32,658 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-21 21:29:32,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 21:29:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-21 21:29:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:29:32,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:32,659 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:32,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:32,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:32,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1974220067, now seen corresponding path program 3 times [2020-10-21 21:29:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:32,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970835464] [2020-10-21 21:29:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:32,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970835464] [2020-10-21 21:29:32,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729609562] [2020-10-21 21:29:32,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:33,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:33,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:33,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:33,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:33,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:33,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:33,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088046137] [2020-10-21 21:29:33,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:33,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:33,082 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-21 21:29:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:33,226 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-21 21:29:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:33,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-21 21:29:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:33,228 INFO L225 Difference]: With dead ends: 121 [2020-10-21 21:29:33,228 INFO L226 Difference]: Without dead ends: 115 [2020-10-21 21:29:33,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:29:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-21 21:29:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-21 21:29:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 21:29:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 21:29:33,237 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-21 21:29:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:33,237 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 21:29:33,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 21:29:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:33,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:33,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:33,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:33,440 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:33,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2022998328, now seen corresponding path program 3 times [2020-10-21 21:29:33,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:33,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908735261] [2020-10-21 21:29:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908735261] [2020-10-21 21:29:33,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725286464] [2020-10-21 21:29:33,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:33,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:33,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:33,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:33,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:33,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:33,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245073646] [2020-10-21 21:29:33,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:33,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:33,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:33,638 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-21 21:29:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:33,798 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-21 21:29:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:33,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:33,800 INFO L225 Difference]: With dead ends: 121 [2020-10-21 21:29:33,800 INFO L226 Difference]: Without dead ends: 116 [2020-10-21 21:29:33,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-21 21:29:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-21 21:29:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 21:29:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 21:29:33,806 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-21 21:29:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:33,806 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 21:29:33,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 21:29:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:33,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:33,807 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:34,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-21 21:29:34,021 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:34,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2023027158, now seen corresponding path program 4 times [2020-10-21 21:29:34,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:34,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572122522] [2020-10-21 21:29:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572122522] [2020-10-21 21:29:34,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94724558] [2020-10-21 21:29:34,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:34,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:34,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:34,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:34,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:34,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:34,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:34,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068805983] [2020-10-21 21:29:34,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:34,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:34,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:34,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:34,215 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-21 21:29:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:34,438 INFO L93 Difference]: Finished difference Result 131 states and 313 transitions. [2020-10-21 21:29:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:29:34,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:34,440 INFO L225 Difference]: With dead ends: 131 [2020-10-21 21:29:34,441 INFO L226 Difference]: Without dead ends: 126 [2020-10-21 21:29:34,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-21 21:29:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-21 21:29:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2020-10-21 21:29:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 21:29:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-21 21:29:34,453 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-21 21:29:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:34,454 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-21 21:29:34,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-21 21:29:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:34,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:34,455 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:34,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:34,656 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2023028119, now seen corresponding path program 5 times [2020-10-21 21:29:34,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:34,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294911149] [2020-10-21 21:29:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294911149] [2020-10-21 21:29:34,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800230842] [2020-10-21 21:29:34,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:34,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:34,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:34,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:34,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:34,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:34,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:34,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:34,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486023608] [2020-10-21 21:29:34,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:34,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:34,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:34,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:34,863 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 11 states. [2020-10-21 21:29:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:35,011 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-21 21:29:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:35,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:35,013 INFO L225 Difference]: With dead ends: 126 [2020-10-21 21:29:35,013 INFO L226 Difference]: Without dead ends: 121 [2020-10-21 21:29:35,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-21 21:29:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-21 21:29:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 21:29:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-21 21:29:35,019 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-21 21:29:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:35,019 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-21 21:29:35,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-21 21:29:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:35,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:35,020 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:35,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:35,231 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:35,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2023920888, now seen corresponding path program 6 times [2020-10-21 21:29:35,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:35,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147828104] [2020-10-21 21:29:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147828104] [2020-10-21 21:29:35,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175510454] [2020-10-21 21:29:35,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:35,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:29:35,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:35,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:35,411 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:35,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:35,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203177832] [2020-10-21 21:29:35,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:35,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:35,426 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 11 states. [2020-10-21 21:29:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:35,585 INFO L93 Difference]: Finished difference Result 127 states and 304 transitions. [2020-10-21 21:29:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:35,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:35,587 INFO L225 Difference]: With dead ends: 127 [2020-10-21 21:29:35,587 INFO L226 Difference]: Without dead ends: 122 [2020-10-21 21:29:35,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:29:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-21 21:29:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2020-10-21 21:29:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-21 21:29:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2020-10-21 21:29:35,592 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 11 [2020-10-21 21:29:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:35,592 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2020-10-21 21:29:35,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2020-10-21 21:29:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:35,593 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:35,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-21 21:29:35,797 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:35,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2023921849, now seen corresponding path program 7 times [2020-10-21 21:29:35,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:35,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674114458] [2020-10-21 21:29:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:35,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674114458] [2020-10-21 21:29:35,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101687765] [2020-10-21 21:29:35,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:35,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 21:29:35,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:36,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:36,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 21:29:36,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360852941] [2020-10-21 21:29:36,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 21:29:36,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 21:29:36,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 21:29:36,009 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand 11 states. [2020-10-21 21:29:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:36,208 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-21 21:29:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:29:36,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-21 21:29:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:36,210 INFO L225 Difference]: With dead ends: 141 [2020-10-21 21:29:36,211 INFO L226 Difference]: Without dead ends: 136 [2020-10-21 21:29:36,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-21 21:29:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-21 21:29:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-10-21 21:29:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-21 21:29:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 236 transitions. [2020-10-21 21:29:36,216 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 236 transitions. Word has length 11 [2020-10-21 21:29:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:36,217 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 236 transitions. [2020-10-21 21:29:36,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 21:29:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 236 transitions. [2020-10-21 21:29:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:36,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:36,218 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:36,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:29:36,430 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:36,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2023950679, now seen corresponding path program 8 times [2020-10-21 21:29:36,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:36,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997722437] [2020-10-21 21:29:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997722437] [2020-10-21 21:29:36,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24192568] [2020-10-21 21:29:36,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:36,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:29:36,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:29:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:36,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-21 21:29:36,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715000119] [2020-10-21 21:29:36,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 21:29:36,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:36,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 21:29:36,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:29:36,579 INFO L87 Difference]: Start difference. First operand 96 states and 236 transitions. Second operand 9 states. [2020-10-21 21:29:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:36,705 INFO L93 Difference]: Finished difference Result 131 states and 307 transitions. [2020-10-21 21:29:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 21:29:36,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-21 21:29:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:36,707 INFO L225 Difference]: With dead ends: 131 [2020-10-21 21:29:36,707 INFO L226 Difference]: Without dead ends: 126 [2020-10-21 21:29:36,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-21 21:29:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-10-21 21:29:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-21 21:29:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-21 21:29:36,712 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-21 21:29:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:36,712 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-21 21:29:36,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 21:29:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-21 21:29:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:36,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:36,713 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:36,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-21 21:29:36,922 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1984724146, now seen corresponding path program 4 times [2020-10-21 21:29:36,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:36,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839231405] [2020-10-21 21:29:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:36,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839231405] [2020-10-21 21:29:36,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102292789] [2020-10-21 21:29:36,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:37,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:37,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:37,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:37,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:37,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:37,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 21:29:37,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059564529] [2020-10-21 21:29:37,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 21:29:37,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 21:29:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-21 21:29:37,150 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-21 21:29:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:37,297 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-21 21:29:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:37,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-21 21:29:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:37,299 INFO L225 Difference]: With dead ends: 143 [2020-10-21 21:29:37,299 INFO L226 Difference]: Without dead ends: 138 [2020-10-21 21:29:37,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-21 21:29:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-21 21:29:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-21 21:29:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-21 21:29:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-21 21:29:37,305 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-21 21:29:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:37,305 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-21 21:29:37,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 21:29:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-21 21:29:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:29:37,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:37,306 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:37,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-21 21:29:37,518 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:37,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1071251737, now seen corresponding path program 4 times [2020-10-21 21:29:37,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:37,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723788088] [2020-10-21 21:29:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723788088] [2020-10-21 21:29:37,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904952474] [2020-10-21 21:29:37,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:37,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:37,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:37,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:37,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:37,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:37,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:37,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:29:37,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665643532] [2020-10-21 21:29:37,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:29:37,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:37,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:29:37,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:37,756 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-21 21:29:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:37,930 INFO L93 Difference]: Finished difference Result 147 states and 350 transitions. [2020-10-21 21:29:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:37,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-21 21:29:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:37,932 INFO L225 Difference]: With dead ends: 147 [2020-10-21 21:29:37,932 INFO L226 Difference]: Without dead ends: 141 [2020-10-21 21:29:37,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:29:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-21 21:29:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-21 21:29:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-21 21:29:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-21 21:29:37,939 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-21 21:29:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:37,940 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-21 21:29:37,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:29:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-21 21:29:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:29:37,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:37,941 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:38,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-21 21:29:38,154 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:38,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:38,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1711561906, now seen corresponding path program 9 times [2020-10-21 21:29:38,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:38,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320434149] [2020-10-21 21:29:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320434149] [2020-10-21 21:29:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854546445] [2020-10-21 21:29:38,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:38,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:29:38,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:38,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:38,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:38,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:29:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:38,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:29:38,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438846888] [2020-10-21 21:29:38,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:29:38,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:29:38,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:29:38,404 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-21 21:29:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:29:38,614 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-21 21:29:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:29:38,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:29:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:29:38,616 INFO L225 Difference]: With dead ends: 152 [2020-10-21 21:29:38,616 INFO L226 Difference]: Without dead ends: 147 [2020-10-21 21:29:38,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:29:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-21 21:29:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-21 21:29:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:29:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-21 21:29:38,621 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-21 21:29:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:29:38,621 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-21 21:29:38,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:29:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-21 21:29:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:29:38,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:29:38,622 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:29:38,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 21:29:38,832 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:29:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:29:38,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1711533076, now seen corresponding path program 10 times [2020-10-21 21:29:38,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:29:38,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084011690] [2020-10-21 21:29:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:29:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:29:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:38,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084011690] [2020-10-21 21:29:38,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244462326] [2020-10-21 21:29:38,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:29:38,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:29:38,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:29:38,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:29:38,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:29:39,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:29:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:29:40,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:29:40,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 21:29:40,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550383776] [2020-10-21 21:29:40,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 21:29:40,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:29:40,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 21:29:40,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2020-10-21 21:29:40,181 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 14 states. [2020-10-21 21:29:44,391 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:29:50,774 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-21 21:30:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:04,246 INFO L93 Difference]: Finished difference Result 168 states and 398 transitions. [2020-10-21 21:30:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 21:30:04,281 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-21 21:30:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:04,283 INFO L225 Difference]: With dead ends: 168 [2020-10-21 21:30:04,283 INFO L226 Difference]: Without dead ends: 163 [2020-10-21 21:30:04,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=195, Invalid=403, Unknown=2, NotChecked=0, Total=600 [2020-10-21 21:30:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-21 21:30:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 112. [2020-10-21 21:30:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:30:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-21 21:30:04,288 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-21 21:30:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:04,288 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-21 21:30:04,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 21:30:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-21 21:30:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:04,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:04,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:04,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:04,490 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1711532115, now seen corresponding path program 11 times [2020-10-21 21:30:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:04,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571057875] [2020-10-21 21:30:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:04,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571057875] [2020-10-21 21:30:04,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963243887] [2020-10-21 21:30:04,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:04,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:04,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:04,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:04,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:04,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:04,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:04,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656141684] [2020-10-21 21:30:04,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:04,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:04,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:04,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:04,717 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 13 states. [2020-10-21 21:30:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:04,977 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-21 21:30:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:30:04,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:04,979 INFO L225 Difference]: With dead ends: 148 [2020-10-21 21:30:04,979 INFO L226 Difference]: Without dead ends: 143 [2020-10-21 21:30:04,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-21 21:30:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-21 21:30:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-21 21:30:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-21 21:30:04,984 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-21 21:30:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:04,984 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-21 21:30:04,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-21 21:30:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:04,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:04,985 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:05,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:05,186 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:05,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1710639346, now seen corresponding path program 12 times [2020-10-21 21:30:05,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:05,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864532127] [2020-10-21 21:30:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:05,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864532127] [2020-10-21 21:30:05,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087048993] [2020-10-21 21:30:05,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:05,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:30:05,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:05,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:05,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:05,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:05,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:05,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:05,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149521524] [2020-10-21 21:30:05,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:05,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:05,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:05,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:05,440 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 13 states. [2020-10-21 21:30:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:05,798 INFO L93 Difference]: Finished difference Result 167 states and 399 transitions. [2020-10-21 21:30:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:05,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:05,803 INFO L225 Difference]: With dead ends: 167 [2020-10-21 21:30:05,803 INFO L226 Difference]: Without dead ends: 162 [2020-10-21 21:30:05,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-21 21:30:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-21 21:30:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 114. [2020-10-21 21:30:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-21 21:30:05,809 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-21 21:30:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:05,809 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-21 21:30:05,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-21 21:30:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:05,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:05,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:06,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:06,011 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:06,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:06,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1710638385, now seen corresponding path program 13 times [2020-10-21 21:30:06,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:06,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274166410] [2020-10-21 21:30:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274166410] [2020-10-21 21:30:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15027830] [2020-10-21 21:30:06,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:06,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:06,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:06,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:06,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995382572] [2020-10-21 21:30:06,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:06,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:06,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:06,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:06,201 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 13 states. [2020-10-21 21:30:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:06,555 INFO L93 Difference]: Finished difference Result 177 states and 423 transitions. [2020-10-21 21:30:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:06,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:06,558 INFO L225 Difference]: With dead ends: 177 [2020-10-21 21:30:06,558 INFO L226 Difference]: Without dead ends: 169 [2020-10-21 21:30:06,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-21 21:30:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-21 21:30:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 114. [2020-10-21 21:30:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 283 transitions. [2020-10-21 21:30:06,565 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 283 transitions. Word has length 12 [2020-10-21 21:30:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:06,565 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 283 transitions. [2020-10-21 21:30:06,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 283 transitions. [2020-10-21 21:30:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:06,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:06,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:06,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-21 21:30:06,777 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1710609555, now seen corresponding path program 14 times [2020-10-21 21:30:06,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:06,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014138089] [2020-10-21 21:30:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:06,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014138089] [2020-10-21 21:30:06,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589274088] [2020-10-21 21:30:06,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:06,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:06,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:06,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:06,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:06,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:07,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:07,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:07,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804442921] [2020-10-21 21:30:07,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:07,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:07,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:07,029 INFO L87 Difference]: Start difference. First operand 114 states and 283 transitions. Second operand 13 states. [2020-10-21 21:30:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:07,397 INFO L93 Difference]: Finished difference Result 165 states and 395 transitions. [2020-10-21 21:30:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:07,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:07,400 INFO L225 Difference]: With dead ends: 165 [2020-10-21 21:30:07,400 INFO L226 Difference]: Without dead ends: 160 [2020-10-21 21:30:07,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-21 21:30:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2020-10-21 21:30:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 21:30:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-21 21:30:07,406 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-21 21:30:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:07,406 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-21 21:30:07,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-21 21:30:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:07,407 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:07,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-21 21:30:07,608 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1682933716, now seen corresponding path program 15 times [2020-10-21 21:30:07,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:07,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859519049] [2020-10-21 21:30:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859519049] [2020-10-21 21:30:07,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166048511] [2020-10-21 21:30:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:07,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:30:07,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:07,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:07,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:07,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:07,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:07,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:07,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021065834] [2020-10-21 21:30:07,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:07,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:07,829 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-21 21:30:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:08,076 INFO L93 Difference]: Finished difference Result 158 states and 378 transitions. [2020-10-21 21:30:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 21:30:08,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:08,079 INFO L225 Difference]: With dead ends: 158 [2020-10-21 21:30:08,079 INFO L226 Difference]: Without dead ends: 153 [2020-10-21 21:30:08,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-21 21:30:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2020-10-21 21:30:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-21 21:30:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 291 transitions. [2020-10-21 21:30:08,085 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 291 transitions. Word has length 12 [2020-10-21 21:30:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:08,085 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 291 transitions. [2020-10-21 21:30:08,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 291 transitions. [2020-10-21 21:30:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:08,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:08,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:08,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-21 21:30:08,298 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1682932755, now seen corresponding path program 16 times [2020-10-21 21:30:08,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:08,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144231240] [2020-10-21 21:30:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:08,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144231240] [2020-10-21 21:30:08,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830358892] [2020-10-21 21:30:08,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:08,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:30:08,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:08,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:08,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:08,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:08,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:08,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100656608] [2020-10-21 21:30:08,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:08,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:08,493 INFO L87 Difference]: Start difference. First operand 116 states and 291 transitions. Second operand 13 states. [2020-10-21 21:30:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:08,879 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-21 21:30:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:08,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:08,881 INFO L225 Difference]: With dead ends: 185 [2020-10-21 21:30:08,881 INFO L226 Difference]: Without dead ends: 177 [2020-10-21 21:30:08,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-21 21:30:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 115. [2020-10-21 21:30:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-21 21:30:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 286 transitions. [2020-10-21 21:30:08,886 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 286 transitions. Word has length 12 [2020-10-21 21:30:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:08,886 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 286 transitions. [2020-10-21 21:30:08,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 286 transitions. [2020-10-21 21:30:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:08,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:08,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:09,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 21:30:09,098 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1682903925, now seen corresponding path program 17 times [2020-10-21 21:30:09,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:09,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031944094] [2020-10-21 21:30:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031944094] [2020-10-21 21:30:09,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703145849] [2020-10-21 21:30:09,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:09,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:09,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:09,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:09,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:09,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:09,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:09,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174062850] [2020-10-21 21:30:09,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:09,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:09,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:09,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:09,292 INFO L87 Difference]: Start difference. First operand 115 states and 286 transitions. Second operand 13 states. [2020-10-21 21:30:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:09,672 INFO L93 Difference]: Finished difference Result 194 states and 459 transitions. [2020-10-21 21:30:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:09,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:09,675 INFO L225 Difference]: With dead ends: 194 [2020-10-21 21:30:09,675 INFO L226 Difference]: Without dead ends: 186 [2020-10-21 21:30:09,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-21 21:30:09,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-21 21:30:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 117. [2020-10-21 21:30:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-21 21:30:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 283 transitions. [2020-10-21 21:30:09,681 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 283 transitions. Word has length 12 [2020-10-21 21:30:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:09,681 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 283 transitions. [2020-10-21 21:30:09,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 283 transitions. [2020-10-21 21:30:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:09,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:09,682 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:09,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-21 21:30:09,895 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902964, now seen corresponding path program 18 times [2020-10-21 21:30:09,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:09,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316146258] [2020-10-21 21:30:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:09,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316146258] [2020-10-21 21:30:09,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366271956] [2020-10-21 21:30:09,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:10,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:30:10,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:10,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 21:30:10,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:10,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:10,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:10,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 21:30:10,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093620271] [2020-10-21 21:30:10,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 21:30:10,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:10,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 21:30:10,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 21:30:10,089 INFO L87 Difference]: Start difference. First operand 117 states and 283 transitions. Second operand 13 states. [2020-10-21 21:30:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:10,381 INFO L93 Difference]: Finished difference Result 172 states and 404 transitions. [2020-10-21 21:30:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 21:30:10,382 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-21 21:30:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:10,383 INFO L225 Difference]: With dead ends: 172 [2020-10-21 21:30:10,383 INFO L226 Difference]: Without dead ends: 167 [2020-10-21 21:30:10,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-21 21:30:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-21 21:30:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 114. [2020-10-21 21:30:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 21:30:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-21 21:30:10,388 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-21 21:30:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:10,388 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-21 21:30:10,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 21:30:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-21 21:30:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:10,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:10,389 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:10,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:10,599 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1396877225, now seen corresponding path program 5 times [2020-10-21 21:30:10,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:10,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160610101] [2020-10-21 21:30:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:10,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160610101] [2020-10-21 21:30:10,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533630569] [2020-10-21 21:30:10,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:10,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:30:10,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:10,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:10,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:10,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:10,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:10,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458122976] [2020-10-21 21:30:10,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:10,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:30:10,892 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-21 21:30:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:11,037 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-21 21:30:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:11,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-21 21:30:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:11,039 INFO L225 Difference]: With dead ends: 164 [2020-10-21 21:30:11,039 INFO L226 Difference]: Without dead ends: 159 [2020-10-21 21:30:11,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-21 21:30:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-21 21:30:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-21 21:30:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-21 21:30:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-21 21:30:11,043 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-21 21:30:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:11,044 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-21 21:30:11,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:30:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-21 21:30:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:30:11,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:11,045 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:11,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 21:30:11,255 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:11,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1150962717, now seen corresponding path program 5 times [2020-10-21 21:30:11,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:11,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016195681] [2020-10-21 21:30:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:11,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016195681] [2020-10-21 21:30:11,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731907075] [2020-10-21 21:30:11,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:11,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:30:11,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:11,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:11,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:11,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:11,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:11,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:11,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383518061] [2020-10-21 21:30:11,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:11,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:11,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:11,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:11,515 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-21 21:30:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:11,715 INFO L93 Difference]: Finished difference Result 173 states and 412 transitions. [2020-10-21 21:30:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:11,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-21 21:30:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:11,717 INFO L225 Difference]: With dead ends: 173 [2020-10-21 21:30:11,717 INFO L226 Difference]: Without dead ends: 167 [2020-10-21 21:30:11,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-21 21:30:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-21 21:30:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-10-21 21:30:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:30:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:30:11,721 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-21 21:30:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:11,721 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:30:11,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:30:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:11,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:11,722 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:11,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-21 21:30:11,923 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:11,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1518812168, now seen corresponding path program 19 times [2020-10-21 21:30:11,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:11,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750442534] [2020-10-21 21:30:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750442534] [2020-10-21 21:30:12,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247354318] [2020-10-21 21:30:12,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:12,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:12,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:12,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:12,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:12,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815121439] [2020-10-21 21:30:12,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:12,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:12,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:12,193 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-21 21:30:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:12,504 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-21 21:30:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:12,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:12,506 INFO L225 Difference]: With dead ends: 183 [2020-10-21 21:30:12,506 INFO L226 Difference]: Without dead ends: 178 [2020-10-21 21:30:12,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-21 21:30:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-21 21:30:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 21:30:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-21 21:30:12,511 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-21 21:30:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:12,512 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-21 21:30:12,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-21 21:30:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:12,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:12,513 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:12,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:12,724 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:12,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1518783338, now seen corresponding path program 20 times [2020-10-21 21:30:12,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:12,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818430523] [2020-10-21 21:30:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:12,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818430523] [2020-10-21 21:30:12,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966839727] [2020-10-21 21:30:12,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:12,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:12,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:12,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:12,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:14,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:14,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:14,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074748108] [2020-10-21 21:30:14,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:14,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:14,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=166, Unknown=1, NotChecked=0, Total=240 [2020-10-21 21:30:14,149 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 16 states. [2020-10-21 21:30:18,350 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:30:20,583 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-21 21:30:22,854 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2020-10-21 21:30:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:36,105 INFO L93 Difference]: Finished difference Result 212 states and 502 transitions. [2020-10-21 21:30:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:36,137 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:30:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:36,138 INFO L225 Difference]: With dead ends: 212 [2020-10-21 21:30:36,138 INFO L226 Difference]: Without dead ends: 207 [2020-10-21 21:30:36,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=275, Invalid=593, Unknown=2, NotChecked=0, Total=870 [2020-10-21 21:30:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-21 21:30:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 131. [2020-10-21 21:30:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 21:30:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-21 21:30:36,142 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-21 21:30:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:36,143 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-21 21:30:36,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:30:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-21 21:30:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:36,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:36,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:36,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:36,354 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:36,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1518782377, now seen corresponding path program 21 times [2020-10-21 21:30:36,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:36,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891996702] [2020-10-21 21:30:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891996702] [2020-10-21 21:30:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933752348] [2020-10-21 21:30:36,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:36,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 21:30:36,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:36,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:36,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:36,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:36,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:36,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:36,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058079588] [2020-10-21 21:30:36,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:36,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:36,619 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 15 states. [2020-10-21 21:30:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:36,954 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-21 21:30:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:30:36,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:36,956 INFO L225 Difference]: With dead ends: 184 [2020-10-21 21:30:36,956 INFO L226 Difference]: Without dead ends: 179 [2020-10-21 21:30:36,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:30:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-21 21:30:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-21 21:30:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-21 21:30:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-21 21:30:36,961 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-21 21:30:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:36,961 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-21 21:30:36,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:36,961 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-21 21:30:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:36,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:36,962 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:37,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-21 21:30:37,172 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1517889608, now seen corresponding path program 22 times [2020-10-21 21:30:37,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:37,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965290985] [2020-10-21 21:30:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:37,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965290985] [2020-10-21 21:30:37,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487820976] [2020-10-21 21:30:37,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:37,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:30:37,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:37,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:37,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:37,470 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:30:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:37,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:37,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:30:37,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234411048] [2020-10-21 21:30:37,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:30:37,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:30:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:30:37,505 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 15 states. [2020-10-21 21:30:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:30:38,045 INFO L93 Difference]: Finished difference Result 207 states and 492 transitions. [2020-10-21 21:30:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:30:38,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:30:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:30:38,047 INFO L225 Difference]: With dead ends: 207 [2020-10-21 21:30:38,047 INFO L226 Difference]: Without dead ends: 202 [2020-10-21 21:30:38,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-21 21:30:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-21 21:30:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 132. [2020-10-21 21:30:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:30:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 21:30:38,053 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-21 21:30:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:30:38,053 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 21:30:38,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:30:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 21:30:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:30:38,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:30:38,054 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:30:38,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:30:38,255 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:30:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:30:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888647, now seen corresponding path program 23 times [2020-10-21 21:30:38,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:30:38,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789613472] [2020-10-21 21:30:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:30:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:30:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:38,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789613472] [2020-10-21 21:30:38,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096272094] [2020-10-21 21:30:38,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:30:38,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:30:38,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:30:38,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:30:38,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:30:40,610 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:30:46,777 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-21 21:30:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:30:46,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:30:46,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:30:46,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585813127] [2020-10-21 21:30:46,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:30:46,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:30:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:30:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2020-10-21 21:30:46,779 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 16 states. [2020-10-21 21:30:50,905 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-21 21:30:55,128 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-21 21:31:11,880 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-21 21:31:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:46,680 INFO L93 Difference]: Finished difference Result 223 states and 539 transitions. [2020-10-21 21:31:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:31:46,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:31:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:46,714 INFO L225 Difference]: With dead ends: 223 [2020-10-21 21:31:46,715 INFO L226 Difference]: Without dead ends: 219 [2020-10-21 21:31:46,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=317, Invalid=732, Unknown=7, NotChecked=0, Total=1056 [2020-10-21 21:31:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-21 21:31:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 146. [2020-10-21 21:31:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-21 21:31:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 372 transitions. [2020-10-21 21:31:46,719 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 372 transitions. Word has length 13 [2020-10-21 21:31:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:46,719 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 372 transitions. [2020-10-21 21:31:46,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:31:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 372 transitions. [2020-10-21 21:31:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:46,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:46,720 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:46,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-21 21:31:46,932 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1517859817, now seen corresponding path program 24 times [2020-10-21 21:31:46,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:46,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627909315] [2020-10-21 21:31:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:47,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627909315] [2020-10-21 21:31:47,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230459720] [2020-10-21 21:31:47,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:47,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-21 21:31:47,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:47,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:47,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:47,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:47,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:47,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:47,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017503560] [2020-10-21 21:31:47,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:47,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:47,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:47,245 INFO L87 Difference]: Start difference. First operand 146 states and 372 transitions. Second operand 15 states. [2020-10-21 21:31:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:47,795 INFO L93 Difference]: Finished difference Result 217 states and 530 transitions. [2020-10-21 21:31:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 21:31:47,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:47,796 INFO L225 Difference]: With dead ends: 217 [2020-10-21 21:31:47,796 INFO L226 Difference]: Without dead ends: 212 [2020-10-21 21:31:47,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-21 21:31:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-21 21:31:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-21 21:31:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-21 21:31:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 366 transitions. [2020-10-21 21:31:47,801 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 366 transitions. Word has length 13 [2020-10-21 21:31:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:47,801 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 366 transitions. [2020-10-21 21:31:47,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 366 transitions. [2020-10-21 21:31:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:47,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:47,802 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:48,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:31:48,013 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:48,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183978, now seen corresponding path program 25 times [2020-10-21 21:31:48,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:48,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806987291] [2020-10-21 21:31:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:48,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806987291] [2020-10-21 21:31:48,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355237219] [2020-10-21 21:31:48,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:48,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:48,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:48,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:48,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:48,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:48,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401538413] [2020-10-21 21:31:48,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:48,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:48,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:48,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:48,254 INFO L87 Difference]: Start difference. First operand 144 states and 366 transitions. Second operand 15 states. [2020-10-21 21:31:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:48,784 INFO L93 Difference]: Finished difference Result 216 states and 528 transitions. [2020-10-21 21:31:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 21:31:48,785 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:48,787 INFO L225 Difference]: With dead ends: 216 [2020-10-21 21:31:48,787 INFO L226 Difference]: Without dead ends: 211 [2020-10-21 21:31:48,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-21 21:31:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-21 21:31:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 149. [2020-10-21 21:31:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-21 21:31:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 387 transitions. [2020-10-21 21:31:48,795 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 387 transitions. Word has length 13 [2020-10-21 21:31:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:48,796 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 387 transitions. [2020-10-21 21:31:48,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 387 transitions. [2020-10-21 21:31:48,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:48,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:48,796 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:48,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 21:31:48,998 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:48,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183017, now seen corresponding path program 26 times [2020-10-21 21:31:48,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:49,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255500626] [2020-10-21 21:31:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:49,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255500626] [2020-10-21 21:31:49,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389188976] [2020-10-21 21:31:49,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:49,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:31:49,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:49,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:49,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:49,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:49,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:49,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:49,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958122322] [2020-10-21 21:31:49,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:49,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:49,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:49,248 INFO L87 Difference]: Start difference. First operand 149 states and 387 transitions. Second operand 15 states. [2020-10-21 21:31:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:49,811 INFO L93 Difference]: Finished difference Result 215 states and 531 transitions. [2020-10-21 21:31:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:31:49,812 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:49,813 INFO L225 Difference]: With dead ends: 215 [2020-10-21 21:31:49,813 INFO L226 Difference]: Without dead ends: 210 [2020-10-21 21:31:49,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 21:31:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-21 21:31:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 148. [2020-10-21 21:31:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-21 21:31:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 382 transitions. [2020-10-21 21:31:49,819 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 382 transitions. Word has length 13 [2020-10-21 21:31:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:49,819 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 382 transitions. [2020-10-21 21:31:49,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 382 transitions. [2020-10-21 21:31:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:49,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:49,820 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:50,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-21 21:31:50,022 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1490154187, now seen corresponding path program 27 times [2020-10-21 21:31:50,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:50,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520889545] [2020-10-21 21:31:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520889545] [2020-10-21 21:31:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67334423] [2020-10-21 21:31:50,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:50,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:31:50,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:50,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:50,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:50,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:50,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:50,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:50,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917808337] [2020-10-21 21:31:50,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:50,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:50,258 INFO L87 Difference]: Start difference. First operand 148 states and 382 transitions. Second operand 15 states. [2020-10-21 21:31:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:50,845 INFO L93 Difference]: Finished difference Result 234 states and 576 transitions. [2020-10-21 21:31:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:50,846 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:50,847 INFO L225 Difference]: With dead ends: 234 [2020-10-21 21:31:50,847 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 21:31:50,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 21:31:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 148. [2020-10-21 21:31:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-21 21:31:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 386 transitions. [2020-10-21 21:31:50,852 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 386 transitions. Word has length 13 [2020-10-21 21:31:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:50,852 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 386 transitions. [2020-10-21 21:31:50,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 386 transitions. [2020-10-21 21:31:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:50,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:50,853 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:51,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-21 21:31:51,057 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1490153226, now seen corresponding path program 28 times [2020-10-21 21:31:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:51,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685009161] [2020-10-21 21:31:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:51,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685009161] [2020-10-21 21:31:51,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713471898] [2020-10-21 21:31:51,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:51,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:31:51,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:51,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:51,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:51,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:51,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:51,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:51,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331599557] [2020-10-21 21:31:51,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:51,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:51,301 INFO L87 Difference]: Start difference. First operand 148 states and 386 transitions. Second operand 15 states. [2020-10-21 21:31:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:51,840 INFO L93 Difference]: Finished difference Result 225 states and 552 transitions. [2020-10-21 21:31:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:51,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:51,842 INFO L225 Difference]: With dead ends: 225 [2020-10-21 21:31:51,843 INFO L226 Difference]: Without dead ends: 215 [2020-10-21 21:31:51,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-21 21:31:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 141. [2020-10-21 21:31:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-21 21:31:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 361 transitions. [2020-10-21 21:31:51,848 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 361 transitions. Word has length 13 [2020-10-21 21:31:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:51,848 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 361 transitions. [2020-10-21 21:31:51,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 361 transitions. [2020-10-21 21:31:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:51,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:51,849 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:52,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 21:31:52,060 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1489259496, now seen corresponding path program 29 times [2020-10-21 21:31:52,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:52,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898046742] [2020-10-21 21:31:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:52,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898046742] [2020-10-21 21:31:52,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480736182] [2020-10-21 21:31:52,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:52,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:31:52,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:52,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:52,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:52,358 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:52,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:52,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:52,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005004799] [2020-10-21 21:31:52,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:52,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:52,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:52,436 INFO L87 Difference]: Start difference. First operand 141 states and 361 transitions. Second operand 15 states. [2020-10-21 21:31:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:53,403 INFO L93 Difference]: Finished difference Result 216 states and 520 transitions. [2020-10-21 21:31:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:31:53,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:53,405 INFO L225 Difference]: With dead ends: 216 [2020-10-21 21:31:53,405 INFO L226 Difference]: Without dead ends: 209 [2020-10-21 21:31:53,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:31:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-21 21:31:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 129. [2020-10-21 21:31:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-21 21:31:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 317 transitions. [2020-10-21 21:31:53,410 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 317 transitions. Word has length 13 [2020-10-21 21:31:53,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:53,411 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 317 transitions. [2020-10-21 21:31:53,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 317 transitions. [2020-10-21 21:31:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:53,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:53,412 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:53,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-21 21:31:53,624 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash -631309448, now seen corresponding path program 30 times [2020-10-21 21:31:53,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:53,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438773348] [2020-10-21 21:31:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:53,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438773348] [2020-10-21 21:31:53,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847083226] [2020-10-21 21:31:53,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:53,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-21 21:31:53,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:53,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:53,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:53,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:53,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:53,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:53,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883491774] [2020-10-21 21:31:53,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:53,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:53,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:53,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:53,872 INFO L87 Difference]: Start difference. First operand 129 states and 317 transitions. Second operand 15 states. [2020-10-21 21:31:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:54,192 INFO L93 Difference]: Finished difference Result 189 states and 452 transitions. [2020-10-21 21:31:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 21:31:54,193 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:54,195 INFO L225 Difference]: With dead ends: 189 [2020-10-21 21:31:54,195 INFO L226 Difference]: Without dead ends: 184 [2020-10-21 21:31:54,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:31:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-21 21:31:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 135. [2020-10-21 21:31:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:31:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-21 21:31:54,199 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-21 21:31:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:54,199 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-21 21:31:54,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-21 21:31:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:54,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:54,200 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:54,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-21 21:31:54,402 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash -631308487, now seen corresponding path program 31 times [2020-10-21 21:31:54,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:54,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55195704] [2020-10-21 21:31:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:54,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55195704] [2020-10-21 21:31:54,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988057790] [2020-10-21 21:31:54,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:54,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:54,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:54,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:31:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:54,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:54,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:31:54,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728807910] [2020-10-21 21:31:54,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:31:54,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:31:54,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:31:54,669 INFO L87 Difference]: Start difference. First operand 135 states and 341 transitions. Second operand 15 states. [2020-10-21 21:31:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:31:55,211 INFO L93 Difference]: Finished difference Result 218 states and 521 transitions. [2020-10-21 21:31:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 21:31:55,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:31:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:31:55,214 INFO L225 Difference]: With dead ends: 218 [2020-10-21 21:31:55,214 INFO L226 Difference]: Without dead ends: 213 [2020-10-21 21:31:55,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-21 21:31:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-21 21:31:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 134. [2020-10-21 21:31:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-21 21:31:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-21 21:31:55,219 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-21 21:31:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:31:55,219 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-21 21:31:55,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:31:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-21 21:31:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:31:55,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:31:55,220 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:31:55,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-21 21:31:55,432 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:31:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:31:55,433 INFO L82 PathProgramCache]: Analyzing trace with hash -631279657, now seen corresponding path program 32 times [2020-10-21 21:31:55,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:31:55,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536834730] [2020-10-21 21:31:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:31:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:31:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:55,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536834730] [2020-10-21 21:31:55,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057870045] [2020-10-21 21:31:55,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:31:55,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:31:55,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:31:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:31:55,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:31:55,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:31:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:31:57,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:31:57,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 21:31:57,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14899426] [2020-10-21 21:31:57,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 21:31:57,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:31:57,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 21:31:57,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-21 21:31:57,792 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 16 states. [2020-10-21 21:32:00,242 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-21 21:32:06,441 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:32:31,160 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-21 21:32:39,426 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-10-21 21:33:19,893 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-10-21 21:33:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:32,456 INFO L93 Difference]: Finished difference Result 266 states and 628 transitions. [2020-10-21 21:33:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-21 21:33:32,487 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-21 21:33:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:32,488 INFO L225 Difference]: With dead ends: 266 [2020-10-21 21:33:32,488 INFO L226 Difference]: Without dead ends: 256 [2020-10-21 21:33:32,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=399, Invalid=991, Unknown=16, NotChecked=0, Total=1406 [2020-10-21 21:33:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-21 21:33:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 137. [2020-10-21 21:33:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-21 21:33:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 349 transitions. [2020-10-21 21:33:32,494 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 349 transitions. Word has length 13 [2020-10-21 21:33:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:32,497 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 349 transitions. [2020-10-21 21:33:32,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 21:33:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 349 transitions. [2020-10-21 21:33:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:32,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:32,498 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:32,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:32,699 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:32,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:32,699 INFO L82 PathProgramCache]: Analyzing trace with hash -631278696, now seen corresponding path program 33 times [2020-10-21 21:33:32,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:32,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587113206] [2020-10-21 21:33:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:32,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587113206] [2020-10-21 21:33:32,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994268226] [2020-10-21 21:33:32,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:32,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:33:32,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:32,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:32,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:32,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:32,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:32,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:32,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334863447] [2020-10-21 21:33:32,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:32,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:32,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:32,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:32,976 INFO L87 Difference]: Start difference. First operand 137 states and 349 transitions. Second operand 15 states. [2020-10-21 21:33:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:33,704 INFO L93 Difference]: Finished difference Result 234 states and 555 transitions. [2020-10-21 21:33:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:33,712 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:33,713 INFO L225 Difference]: With dead ends: 234 [2020-10-21 21:33:33,713 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 21:33:33,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-21 21:33:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 21:33:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 135. [2020-10-21 21:33:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:33:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-21 21:33:33,719 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-21 21:33:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:33,719 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-21 21:33:33,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-21 21:33:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:33,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:33,720 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:33,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-21 21:33:33,932 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash -630385927, now seen corresponding path program 34 times [2020-10-21 21:33:33,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:33,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135435788] [2020-10-21 21:33:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135435788] [2020-10-21 21:33:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150737325] [2020-10-21 21:33:34,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:34,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:33:34,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:34,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:34,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:34,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:34,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:34,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428320246] [2020-10-21 21:33:34,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:34,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:34,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:34,204 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-21 21:33:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:34,892 INFO L93 Difference]: Finished difference Result 238 states and 569 transitions. [2020-10-21 21:33:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:34,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:34,894 INFO L225 Difference]: With dead ends: 238 [2020-10-21 21:33:34,894 INFO L226 Difference]: Without dead ends: 230 [2020-10-21 21:33:34,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:33:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-21 21:33:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 135. [2020-10-21 21:33:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-21 21:33:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-21 21:33:34,900 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-21 21:33:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:34,900 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-21 21:33:34,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-21 21:33:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:34,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:34,901 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:35,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:35,107 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash -630384966, now seen corresponding path program 35 times [2020-10-21 21:33:35,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:35,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600992930] [2020-10-21 21:33:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600992930] [2020-10-21 21:33:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709958094] [2020-10-21 21:33:35,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:35,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:33:35,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:35,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:35,358 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:35,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:35,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:35,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132685693] [2020-10-21 21:33:35,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:35,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:35,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:35,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:35,370 INFO L87 Difference]: Start difference. First operand 135 states and 341 transitions. Second operand 15 states. [2020-10-21 21:33:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:35,991 INFO L93 Difference]: Finished difference Result 239 states and 572 transitions. [2020-10-21 21:33:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 21:33:35,992 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:35,993 INFO L225 Difference]: With dead ends: 239 [2020-10-21 21:33:35,993 INFO L226 Difference]: Without dead ends: 231 [2020-10-21 21:33:35,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 21:33:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-21 21:33:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 132. [2020-10-21 21:33:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 21:33:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 326 transitions. [2020-10-21 21:33:35,999 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 326 transitions. Word has length 13 [2020-10-21 21:33:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:35,999 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 326 transitions. [2020-10-21 21:33:35,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 326 transitions. [2020-10-21 21:33:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:36,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:36,000 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:36,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-21 21:33:36,211 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:36,211 INFO L82 PathProgramCache]: Analyzing trace with hash -630356136, now seen corresponding path program 36 times [2020-10-21 21:33:36,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:36,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093024711] [2020-10-21 21:33:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:36,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093024711] [2020-10-21 21:33:36,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311441503] [2020-10-21 21:33:36,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:36,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 21:33:36,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 21:33:36,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:36,464 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:36,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:36,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 21:33:36,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427625985] [2020-10-21 21:33:36,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 21:33:36,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 21:33:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-21 21:33:36,502 INFO L87 Difference]: Start difference. First operand 132 states and 326 transitions. Second operand 15 states. [2020-10-21 21:33:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:37,126 INFO L93 Difference]: Finished difference Result 228 states and 537 transitions. [2020-10-21 21:33:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 21:33:37,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-21 21:33:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:37,129 INFO L225 Difference]: With dead ends: 228 [2020-10-21 21:33:37,129 INFO L226 Difference]: Without dead ends: 220 [2020-10-21 21:33:37,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 21:33:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-21 21:33:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 130. [2020-10-21 21:33:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-21 21:33:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-21 21:33:37,134 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-21 21:33:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:37,135 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-21 21:33:37,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 21:33:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-21 21:33:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:37,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:37,136 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:37,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:37,345 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash -353491858, now seen corresponding path program 6 times [2020-10-21 21:33:37,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:37,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25607135] [2020-10-21 21:33:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:37,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25607135] [2020-10-21 21:33:37,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610363146] [2020-10-21 21:33:37,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:37,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-21 21:33:37,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:37,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:37,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:37,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:37,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:37,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:37,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224313988] [2020-10-21 21:33:37,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:37,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-21 21:33:37,697 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-21 21:33:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:37,884 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-21 21:33:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:37,884 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-21 21:33:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:37,885 INFO L225 Difference]: With dead ends: 185 [2020-10-21 21:33:37,886 INFO L226 Difference]: Without dead ends: 180 [2020-10-21 21:33:37,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-21 21:33:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-21 21:33:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-21 21:33:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-21 21:33:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-21 21:33:37,894 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-21 21:33:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:37,894 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-21 21:33:37,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-21 21:33:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-21 21:33:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:33:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:37,895 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:38,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-21 21:33:38,106 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:38,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1320134055, now seen corresponding path program 6 times [2020-10-21 21:33:38,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:38,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427142967] [2020-10-21 21:33:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:38,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427142967] [2020-10-21 21:33:38,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66882910] [2020-10-21 21:33:38,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:38,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-21 21:33:38,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:38,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 21:33:38,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:38,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 21:33:38,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-21 21:33:38,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069064085] [2020-10-21 21:33:38,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 21:33:38,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:38,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 21:33:38,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:33:38,348 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 8 states. [2020-10-21 21:33:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:38,375 INFO L93 Difference]: Finished difference Result 219 states and 568 transitions. [2020-10-21 21:33:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:33:38,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-21 21:33:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:38,377 INFO L225 Difference]: With dead ends: 219 [2020-10-21 21:33:38,378 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 21:33:38,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-21 21:33:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 21:33:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-10-21 21:33:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-21 21:33:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 525 transitions. [2020-10-21 21:33:38,383 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 525 transitions. Word has length 13 [2020-10-21 21:33:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:38,383 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 525 transitions. [2020-10-21 21:33:38,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 21:33:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 525 transitions. [2020-10-21 21:33:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:38,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:38,384 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:38,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-21 21:33:38,596 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash 161462414, now seen corresponding path program 37 times [2020-10-21 21:33:38,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:38,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413618779] [2020-10-21 21:33:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413618779] [2020-10-21 21:33:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070770568] [2020-10-21 21:33:38,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:38,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:38,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:38,892 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:38,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:38,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:38,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079190840] [2020-10-21 21:33:38,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:38,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:38,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:38,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:38,909 INFO L87 Difference]: Start difference. First operand 201 states and 525 transitions. Second operand 17 states. [2020-10-21 21:33:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:39,330 INFO L93 Difference]: Finished difference Result 268 states and 660 transitions. [2020-10-21 21:33:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-21 21:33:39,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:39,333 INFO L225 Difference]: With dead ends: 268 [2020-10-21 21:33:39,334 INFO L226 Difference]: Without dead ends: 258 [2020-10-21 21:33:39,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-21 21:33:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-21 21:33:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 201. [2020-10-21 21:33:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-21 21:33:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 526 transitions. [2020-10-21 21:33:39,339 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 526 transitions. Word has length 14 [2020-10-21 21:33:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:39,339 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 526 transitions. [2020-10-21 21:33:39,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 526 transitions. [2020-10-21 21:33:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:39,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:39,341 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:39,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 21:33:39,542 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 161491244, now seen corresponding path program 38 times [2020-10-21 21:33:39,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:39,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473695763] [2020-10-21 21:33:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:39,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473695763] [2020-10-21 21:33:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795322581] [2020-10-21 21:33:39,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:39,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 21:33:39,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:39,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:39,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:39,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144810711] [2020-10-21 21:33:41,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:41,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2020-10-21 21:33:41,956 INFO L87 Difference]: Start difference. First operand 201 states and 526 transitions. Second operand 18 states. [2020-10-21 21:33:45,985 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-21 21:33:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:48,476 INFO L93 Difference]: Finished difference Result 285 states and 699 transitions. [2020-10-21 21:33:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 21:33:48,477 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-21 21:33:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:48,479 INFO L225 Difference]: With dead ends: 285 [2020-10-21 21:33:48,479 INFO L226 Difference]: Without dead ends: 273 [2020-10-21 21:33:48,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=307, Invalid=622, Unknown=1, NotChecked=0, Total=930 [2020-10-21 21:33:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-21 21:33:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 203. [2020-10-21 21:33:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-21 21:33:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 531 transitions. [2020-10-21 21:33:48,484 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 531 transitions. Word has length 14 [2020-10-21 21:33:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:48,484 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 531 transitions. [2020-10-21 21:33:48,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-21 21:33:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 531 transitions. [2020-10-21 21:33:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:48,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:48,486 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:48,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-21 21:33:48,689 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 161492205, now seen corresponding path program 39 times [2020-10-21 21:33:48,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:48,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891561347] [2020-10-21 21:33:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:48,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891561347] [2020-10-21 21:33:48,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091609509] [2020-10-21 21:33:48,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:48,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 21:33:48,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:48,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:48,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:49,036 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:49,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:49,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:49,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900680235] [2020-10-21 21:33:49,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:49,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:49,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:49,054 INFO L87 Difference]: Start difference. First operand 203 states and 531 transitions. Second operand 17 states. [2020-10-21 21:33:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:49,519 INFO L93 Difference]: Finished difference Result 275 states and 685 transitions. [2020-10-21 21:33:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 21:33:49,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:49,521 INFO L225 Difference]: With dead ends: 275 [2020-10-21 21:33:49,521 INFO L226 Difference]: Without dead ends: 270 [2020-10-21 21:33:49,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-21 21:33:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-21 21:33:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 203. [2020-10-21 21:33:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-21 21:33:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 531 transitions. [2020-10-21 21:33:49,531 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 531 transitions. Word has length 14 [2020-10-21 21:33:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:49,531 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 531 transitions. [2020-10-21 21:33:49,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 531 transitions. [2020-10-21 21:33:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:49,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:49,532 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:49,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:49,745 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash 162384974, now seen corresponding path program 40 times [2020-10-21 21:33:49,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:49,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935965777] [2020-10-21 21:33:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:49,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935965777] [2020-10-21 21:33:49,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809136250] [2020-10-21 21:33:49,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:49,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 21:33:49,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:49,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:49,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:50,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 21:33:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:50,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:50,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-21 21:33:50,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060117398] [2020-10-21 21:33:50,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 21:33:50,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:50,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 21:33:50,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-21 21:33:50,137 INFO L87 Difference]: Start difference. First operand 203 states and 531 transitions. Second operand 17 states. [2020-10-21 21:33:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:33:51,059 INFO L93 Difference]: Finished difference Result 294 states and 718 transitions. [2020-10-21 21:33:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-21 21:33:51,060 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-21 21:33:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:33:51,063 INFO L225 Difference]: With dead ends: 294 [2020-10-21 21:33:51,063 INFO L226 Difference]: Without dead ends: 280 [2020-10-21 21:33:51,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2020-10-21 21:33:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-21 21:33:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 206. [2020-10-21 21:33:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-21 21:33:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 541 transitions. [2020-10-21 21:33:51,072 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 541 transitions. Word has length 14 [2020-10-21 21:33:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:33:51,072 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 541 transitions. [2020-10-21 21:33:51,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 21:33:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 541 transitions. [2020-10-21 21:33:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 21:33:51,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:33:51,074 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:33:51,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 21:33:51,289 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:33:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:33:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash 162385935, now seen corresponding path program 41 times [2020-10-21 21:33:51,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:33:51,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771278195] [2020-10-21 21:33:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:33:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:33:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:51,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771278195] [2020-10-21 21:33:51,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236612941] [2020-10-21 21:33:51,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 21:33:51,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 21:33:51,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 21:33:51,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 21:33:51,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 21:33:53,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 21:33:59,866 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 20 [2020-10-21 21:33:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:33:59,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 21:33:59,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-21 21:33:59,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600370949] [2020-10-21 21:33:59,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 21:33:59,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:33:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 21:33:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=215, Unknown=2, NotChecked=0, Total=306 [2020-10-21 21:33:59,869 INFO L87 Difference]: Start difference. First operand 206 states and 541 transitions. Second operand 18 states. [2020-10-21 21:34:04,011 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 40 Received shutdown request... [2020-10-21 21:34:06,210 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-10-21 21:34:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:34:06,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-21 21:34:06,412 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 21:34:06,418 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 21:34:06,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:34:06 BasicIcfg [2020-10-21 21:34:06,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:34:06,421 INFO L168 Benchmark]: Toolchain (without parser) took 279821.20 ms. Allocated memory was 108.5 MB in the beginning and 274.7 MB in the end (delta: 166.2 MB). Free memory was 71.4 MB in the beginning and 224.4 MB in the end (delta: -152.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,421 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 108.5 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.51 ms. Allocated memory was 108.5 MB in the beginning and 161.5 MB in the end (delta: 53.0 MB). Free memory was 70.6 MB in the beginning and 125.3 MB in the end (delta: -54.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.29 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,427 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 161.5 MB. Free memory was 123.4 MB in the beginning and 121.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,427 INFO L168 Benchmark]: RCFGBuilder took 407.91 ms. Allocated memory is still 161.5 MB. Free memory was 121.5 MB in the beginning and 99.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:06,427 INFO L168 Benchmark]: TraceAbstraction took 278648.27 ms. Allocated memory was 161.5 MB in the beginning and 274.7 MB in the end (delta: 113.2 MB). Free memory was 98.9 MB in the beginning and 224.4 MB in the end (delta: -125.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 21:34:06,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 108.5 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.51 ms. Allocated memory was 108.5 MB in the beginning and 161.5 MB in the end (delta: 53.0 MB). Free memory was 70.6 MB in the beginning and 125.3 MB in the end (delta: -54.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.29 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 161.5 MB. Free memory was 123.4 MB in the beginning and 121.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.91 ms. Allocated memory is still 161.5 MB. Free memory was 121.5 MB in the beginning and 99.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 278648.27 ms. Allocated memory was 161.5 MB in the beginning and 274.7 MB in the end (delta: 113.2 MB). Free memory was 98.9 MB in the beginning and 224.4 MB in the end (delta: -125.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 866 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 1183 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (206states) and FLOYD_HOARE automaton (currently 8 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 58 for 2049ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 278.5s, OverallIterations: 54, TraceHistogramMax: 6, AutomataDifference: 229.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 719 SDtfs, 6000 SDslu, 4796 SDs, 0 SdLazy, 3472 SolverSat, 1061 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 116.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1447 GetRequests, 239 SyntacticMatches, 41 SemanticMatches, 1166 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6500 ImplicationChecksByTransitivity, 138.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 53 MinimizatonAttempts, 2625 StatesRemovedByMinimization, 52 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 32.7s InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 160 NumberOfCheckSat, 1139 ConstructedInterpolants, 9 QuantifiedInterpolants, 108746 SizeOfPredicates, 48 NumberOfNonLiveVariables, 4852 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 103 InterpolantComputations, 6 PerfectInterpolantSequences, 15/454 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