/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-19 05:49:08,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-19 05:49:08,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-19 05:49:08,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-19 05:49:08,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-19 05:49:08,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-19 05:49:08,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-19 05:49:08,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-19 05:49:08,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-19 05:49:08,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-19 05:49:08,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-19 05:49:08,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-19 05:49:08,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-19 05:49:08,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-19 05:49:08,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-19 05:49:08,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-19 05:49:08,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-19 05:49:08,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-19 05:49:08,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-19 05:49:08,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-19 05:49:08,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-19 05:49:08,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-19 05:49:08,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-19 05:49:08,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-19 05:49:08,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-19 05:49:08,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-19 05:49:08,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-19 05:49:08,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-19 05:49:08,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-19 05:49:08,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-19 05:49:08,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-19 05:49:08,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-19 05:49:08,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-19 05:49:08,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-19 05:49:08,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-19 05:49:08,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-19 05:49:08,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-19 05:49:08,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-19 05:49:08,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-19 05:49:08,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-19 05:49:08,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-19 05:49:08,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2019-12-19 05:49:08,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-19 05:49:08,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-19 05:49:08,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-19 05:49:08,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-19 05:49:08,445 INFO L138 SettingsManager]: * Use SBE=true [2019-12-19 05:49:08,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-19 05:49:08,445 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-19 05:49:08,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-19 05:49:08,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-19 05:49:08,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-19 05:49:08,447 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-19 05:49:08,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-19 05:49:08,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-19 05:49:08,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-19 05:49:08,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-19 05:49:08,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-19 05:49:08,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-19 05:49:08,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-19 05:49:08,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-19 05:49:08,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-19 05:49:08,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-19 05:49:08,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-19 05:49:08,449 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-19 05:49:08,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-19 05:49:08,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-19 05:49:08,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-19 05:49:08,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-19 05:49:08,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-19 05:49:08,738 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-19 05:49:08,738 INFO L275 PluginConnector]: CDTParser initialized [2019-12-19 05:49:08,740 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-19 05:49:08,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1312fc458/1add2b73923e4733a28fc8272a9a5a85/FLAGc63e15d24 [2019-12-19 05:49:09,451 INFO L306 CDTParser]: Found 1 translation units. [2019-12-19 05:49:09,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-19 05:49:09,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1312fc458/1add2b73923e4733a28fc8272a9a5a85/FLAGc63e15d24 [2019-12-19 05:49:09,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1312fc458/1add2b73923e4733a28fc8272a9a5a85 [2019-12-19 05:49:09,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-19 05:49:09,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-19 05:49:09,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-19 05:49:09,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-19 05:49:09,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-19 05:49:09,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:49:09" (1/1) ... [2019-12-19 05:49:09,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ffa6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:09, skipping insertion in model container [2019-12-19 05:49:09,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:49:09" (1/1) ... [2019-12-19 05:49:09,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-19 05:49:09,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-19 05:49:10,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-19 05:49:10,512 INFO L203 MainTranslator]: Completed pre-run [2019-12-19 05:49:10,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-19 05:49:10,867 INFO L208 MainTranslator]: Completed translation [2019-12-19 05:49:10,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10 WrapperNode [2019-12-19 05:49:10,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-19 05:49:10,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-19 05:49:10,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-19 05:49:10,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-19 05:49:10,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-19 05:49:10,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-19 05:49:10,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-19 05:49:10,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-19 05:49:10,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:10,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:11,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (1/1) ... [2019-12-19 05:49:11,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-19 05:49:11,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-19 05:49:11,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-19 05:49:11,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-19 05:49:11,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (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 [2019-12-19 05:49:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-19 05:49:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-19 05:49:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-19 05:49:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-19 05:49:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-19 05:49:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2019-12-19 05:49:11,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2019-12-19 05:49:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-19 05:49:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-19 05:49:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-19 05:49:11,092 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-19 05:49:11,535 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-19 05:49:11,535 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-19 05:49:11,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:49:11 BoogieIcfgContainer [2019-12-19 05:49:11,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-19 05:49:11,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-19 05:49:11,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-19 05:49:11,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-19 05:49:11,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:49:09" (1/3) ... [2019-12-19 05:49:11,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd06d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:49:11, skipping insertion in model container [2019-12-19 05:49:11,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:49:10" (2/3) ... [2019-12-19 05:49:11,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd06d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:49:11, skipping insertion in model container [2019-12-19 05:49:11,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:49:11" (3/3) ... [2019-12-19 05:49:11,545 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2019-12-19 05:49:11,555 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-19 05:49:11,556 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-19 05:49:11,563 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-19 05:49:11,564 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-19 05:49:11,587 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,588 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,588 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,588 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,588 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,588 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,589 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,589 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,589 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,589 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,589 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,590 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,590 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,590 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,591 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,591 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,591 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,591 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,591 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,592 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,596 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,597 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,597 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,597 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,597 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,597 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,598 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,598 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,598 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-19 05:49:11,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-19 05:49:11,642 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-19 05:49:11,642 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-19 05:49:11,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-19 05:49:11,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-19 05:49:11,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-19 05:49:11,643 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-19 05:49:11,643 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-19 05:49:11,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-19 05:49:11,655 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 81 transitions [2019-12-19 05:49:11,680 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 312 states. [2019-12-19 05:49:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2019-12-19 05:49:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-19 05:49:11,698 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:11,700 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:11,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1789221034, now seen corresponding path program 1 times [2019-12-19 05:49:11,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:11,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300160953] [2019-12-19 05:49:11,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:11,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300160953] [2019-12-19 05:49:11,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-19 05:49:11,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-19 05:49:11,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135728313] [2019-12-19 05:49:11,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-19 05:49:11,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:11,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-19 05:49:11,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-19 05:49:11,989 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 2 states. [2019-12-19 05:49:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:12,019 INFO L93 Difference]: Finished difference Result 305 states and 575 transitions. [2019-12-19 05:49:12,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-19 05:49:12,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-12-19 05:49:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:12,042 INFO L225 Difference]: With dead ends: 305 [2019-12-19 05:49:12,042 INFO L226 Difference]: Without dead ends: 268 [2019-12-19 05:49:12,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-19 05:49:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-12-19 05:49:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2019-12-19 05:49:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-12-19 05:49:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 502 transitions. [2019-12-19 05:49:12,107 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 502 transitions. Word has length 46 [2019-12-19 05:49:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:12,107 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 502 transitions. [2019-12-19 05:49:12,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-19 05:49:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 502 transitions. [2019-12-19 05:49:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-19 05:49:12,111 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:12,111 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:12,111 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:12,112 INFO L82 PathProgramCache]: Analyzing trace with hash 73657564, now seen corresponding path program 1 times [2019-12-19 05:49:12,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:12,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162370766] [2019-12-19 05:49:12,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:12,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162370766] [2019-12-19 05:49:12,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-19 05:49:12,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-19 05:49:12,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360129119] [2019-12-19 05:49:12,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-19 05:49:12,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:12,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-19 05:49:12,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-19 05:49:12,247 INFO L87 Difference]: Start difference. First operand 268 states and 502 transitions. Second operand 3 states. [2019-12-19 05:49:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:12,282 INFO L93 Difference]: Finished difference Result 398 states and 762 transitions. [2019-12-19 05:49:12,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-19 05:49:12,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-12-19 05:49:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:12,287 INFO L225 Difference]: With dead ends: 398 [2019-12-19 05:49:12,287 INFO L226 Difference]: Without dead ends: 398 [2019-12-19 05:49:12,288 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-19 05:49:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2019-12-19 05:49:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 281. [2019-12-19 05:49:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-12-19 05:49:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 528 transitions. [2019-12-19 05:49:12,325 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 528 transitions. Word has length 46 [2019-12-19 05:49:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:12,326 INFO L462 AbstractCegarLoop]: Abstraction has 281 states and 528 transitions. [2019-12-19 05:49:12,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-19 05:49:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 528 transitions. [2019-12-19 05:49:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-19 05:49:12,329 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:12,329 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:12,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:12,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1619336906, now seen corresponding path program 1 times [2019-12-19 05:49:12,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:12,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826373346] [2019-12-19 05:49:12,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:12,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826373346] [2019-12-19 05:49:12,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-19 05:49:12,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-19 05:49:12,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131987688] [2019-12-19 05:49:12,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-19 05:49:12,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-19 05:49:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-19 05:49:12,435 INFO L87 Difference]: Start difference. First operand 281 states and 528 transitions. Second operand 3 states. [2019-12-19 05:49:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:12,458 INFO L93 Difference]: Finished difference Result 414 states and 794 transitions. [2019-12-19 05:49:12,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-19 05:49:12,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-12-19 05:49:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:12,461 INFO L225 Difference]: With dead ends: 414 [2019-12-19 05:49:12,461 INFO L226 Difference]: Without dead ends: 414 [2019-12-19 05:49:12,462 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-19 05:49:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-12-19 05:49:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 300. [2019-12-19 05:49:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-12-19 05:49:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 566 transitions. [2019-12-19 05:49:12,476 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 566 transitions. Word has length 57 [2019-12-19 05:49:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:12,476 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 566 transitions. [2019-12-19 05:49:12,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-19 05:49:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 566 transitions. [2019-12-19 05:49:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-19 05:49:12,479 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:12,479 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:12,479 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash 972138175, now seen corresponding path program 1 times [2019-12-19 05:49:12,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:12,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17238986] [2019-12-19 05:49:12,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:12,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17238986] [2019-12-19 05:49:12,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833077104] [2019-12-19 05:49:12,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-12-19 05:49:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:12,752 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-19 05:49:12,768 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:12,842 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-19 05:49:12,843 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-19 05:49:12,847 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-19 05:49:12,848 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-19 05:49:12,848 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-12-19 05:49:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:12,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-19 05:49:12,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-12-19 05:49:12,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523638420] [2019-12-19 05:49:12,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-19 05:49:12,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:12,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-19 05:49:12,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-19 05:49:12,872 INFO L87 Difference]: Start difference. First operand 300 states and 566 transitions. Second operand 3 states. [2019-12-19 05:49:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:12,916 INFO L93 Difference]: Finished difference Result 282 states and 521 transitions. [2019-12-19 05:49:12,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-19 05:49:12,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-12-19 05:49:12,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:12,921 INFO L225 Difference]: With dead ends: 282 [2019-12-19 05:49:12,921 INFO L226 Difference]: Without dead ends: 282 [2019-12-19 05:49:12,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-19 05:49:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2019-12-19 05:49:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2019-12-19 05:49:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2019-12-19 05:49:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 521 transitions. [2019-12-19 05:49:12,965 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 521 transitions. Word has length 65 [2019-12-19 05:49:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:12,966 INFO L462 AbstractCegarLoop]: Abstraction has 282 states and 521 transitions. [2019-12-19 05:49:12,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-19 05:49:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 521 transitions. [2019-12-19 05:49:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-19 05:49:12,971 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:12,971 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:13,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:13,175 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -614274507, now seen corresponding path program 2 times [2019-12-19 05:49:13,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:13,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846435177] [2019-12-19 05:49:13,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:13,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846435177] [2019-12-19 05:49:13,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060595394] [2019-12-19 05:49:13,326 INFO L92 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 [2019-12-19 05:49:13,424 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-19 05:49:13,424 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:13,425 INFO L264 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-19 05:49:13,428 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-19 05:49:13,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:13,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-19 05:49:13,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854431090] [2019-12-19 05:49:13,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-19 05:49:13,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:13,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-19 05:49:13,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-19 05:49:13,492 INFO L87 Difference]: Start difference. First operand 282 states and 521 transitions. Second operand 8 states. [2019-12-19 05:49:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:13,996 INFO L93 Difference]: Finished difference Result 964 states and 1813 transitions. [2019-12-19 05:49:13,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-19 05:49:13,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-12-19 05:49:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:14,002 INFO L225 Difference]: With dead ends: 964 [2019-12-19 05:49:14,008 INFO L226 Difference]: Without dead ends: 964 [2019-12-19 05:49:14,012 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2019-12-19 05:49:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-12-19 05:49:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 622. [2019-12-19 05:49:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-12-19 05:49:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1174 transitions. [2019-12-19 05:49:14,040 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1174 transitions. Word has length 65 [2019-12-19 05:49:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:14,043 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 1174 transitions. [2019-12-19 05:49:14,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-19 05:49:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1174 transitions. [2019-12-19 05:49:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-19 05:49:14,046 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:14,047 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:14,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:14,254 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:14,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2086131724, now seen corresponding path program 3 times [2019-12-19 05:49:14,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:14,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67386524] [2019-12-19 05:49:14,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:14,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67386524] [2019-12-19 05:49:14,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018186873] [2019-12-19 05:49:14,511 INFO L92 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 [2019-12-19 05:49:14,592 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-19 05:49:14,592 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:14,594 INFO L264 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-19 05:49:14,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:49:14,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:14,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-12-19 05:49:14,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629247084] [2019-12-19 05:49:14,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-19 05:49:14,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:14,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-19 05:49:14,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2019-12-19 05:49:14,686 INFO L87 Difference]: Start difference. First operand 622 states and 1174 transitions. Second operand 18 states. [2019-12-19 05:49:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:16,443 INFO L93 Difference]: Finished difference Result 1509 states and 2844 transitions. [2019-12-19 05:49:16,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-12-19 05:49:16,444 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2019-12-19 05:49:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:16,452 INFO L225 Difference]: With dead ends: 1509 [2019-12-19 05:49:16,453 INFO L226 Difference]: Without dead ends: 1509 [2019-12-19 05:49:16,455 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1102, Invalid=4010, Unknown=0, NotChecked=0, Total=5112 [2019-12-19 05:49:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2019-12-19 05:49:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1048. [2019-12-19 05:49:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-12-19 05:49:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1985 transitions. [2019-12-19 05:49:16,490 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1985 transitions. Word has length 84 [2019-12-19 05:49:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:16,490 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1985 transitions. [2019-12-19 05:49:16,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-19 05:49:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1985 transitions. [2019-12-19 05:49:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-12-19 05:49:16,494 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:16,494 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:16,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:16,700 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:16,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:16,701 INFO L82 PathProgramCache]: Analyzing trace with hash 53287651, now seen corresponding path program 4 times [2019-12-19 05:49:16,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:16,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516662103] [2019-12-19 05:49:16,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:16,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516662103] [2019-12-19 05:49:16,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993355913] [2019-12-19 05:49:16,939 INFO L92 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 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 [2019-12-19 05:49:17,010 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-19 05:49:17,010 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:17,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-19 05:49:17,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-19 05:49:17,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:17,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-12-19 05:49:17,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218581589] [2019-12-19 05:49:17,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-19 05:49:17,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:17,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-19 05:49:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2019-12-19 05:49:17,129 INFO L87 Difference]: Start difference. First operand 1048 states and 1985 transitions. Second operand 20 states. [2019-12-19 05:49:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:19,109 INFO L93 Difference]: Finished difference Result 2165 states and 4073 transitions. [2019-12-19 05:49:19,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-19 05:49:19,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 92 [2019-12-19 05:49:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:19,124 INFO L225 Difference]: With dead ends: 2165 [2019-12-19 05:49:19,124 INFO L226 Difference]: Without dead ends: 2165 [2019-12-19 05:49:19,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1481, Invalid=6175, Unknown=0, NotChecked=0, Total=7656 [2019-12-19 05:49:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2019-12-19 05:49:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1102. [2019-12-19 05:49:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2019-12-19 05:49:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2089 transitions. [2019-12-19 05:49:19,175 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2089 transitions. Word has length 92 [2019-12-19 05:49:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:19,175 INFO L462 AbstractCegarLoop]: Abstraction has 1102 states and 2089 transitions. [2019-12-19 05:49:19,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-19 05:49:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2089 transitions. [2019-12-19 05:49:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-12-19 05:49:19,179 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:19,180 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:19,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:19,393 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:19,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:19,393 INFO L82 PathProgramCache]: Analyzing trace with hash 85375957, now seen corresponding path program 5 times [2019-12-19 05:49:19,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:19,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075913227] [2019-12-19 05:49:19,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:19,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075913227] [2019-12-19 05:49:19,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621683921] [2019-12-19 05:49:19,654 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-12-19 05:49:19,751 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-12-19 05:49:19,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:19,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-19 05:49:19,764 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:19,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:19,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-12-19 05:49:19,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556067843] [2019-12-19 05:49:19,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-19 05:49:19,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:19,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-19 05:49:19,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2019-12-19 05:49:19,904 INFO L87 Difference]: Start difference. First operand 1102 states and 2089 transitions. Second operand 24 states. [2019-12-19 05:49:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:23,258 INFO L93 Difference]: Finished difference Result 3101 states and 5835 transitions. [2019-12-19 05:49:23,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-12-19 05:49:23,259 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2019-12-19 05:49:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:23,274 INFO L225 Difference]: With dead ends: 3101 [2019-12-19 05:49:23,275 INFO L226 Difference]: Without dead ends: 3101 [2019-12-19 05:49:23,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5887 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3517, Invalid=11983, Unknown=0, NotChecked=0, Total=15500 [2019-12-19 05:49:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2019-12-19 05:49:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 1378. [2019-12-19 05:49:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-12-19 05:49:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2614 transitions. [2019-12-19 05:49:23,325 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2614 transitions. Word has length 103 [2019-12-19 05:49:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:23,326 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 2614 transitions. [2019-12-19 05:49:23,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-19 05:49:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2614 transitions. [2019-12-19 05:49:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-12-19 05:49:23,330 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:23,330 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:23,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:23,534 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:23,534 INFO L82 PathProgramCache]: Analyzing trace with hash -164242425, now seen corresponding path program 6 times [2019-12-19 05:49:23,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:23,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714336449] [2019-12-19 05:49:23,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:23,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714336449] [2019-12-19 05:49:23,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129751844] [2019-12-19 05:49:23,865 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:23,954 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-19 05:49:23,954 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:23,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-19 05:49:23,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:24,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:24,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-12-19 05:49:24,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44914571] [2019-12-19 05:49:24,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-19 05:49:24,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-19 05:49:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2019-12-19 05:49:24,159 INFO L87 Difference]: Start difference. First operand 1378 states and 2614 transitions. Second operand 28 states. [2019-12-19 05:49:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:30,097 INFO L93 Difference]: Finished difference Result 4252 states and 7994 transitions. [2019-12-19 05:49:30,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2019-12-19 05:49:30,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2019-12-19 05:49:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:30,116 INFO L225 Difference]: With dead ends: 4252 [2019-12-19 05:49:30,116 INFO L226 Difference]: Without dead ends: 4252 [2019-12-19 05:49:30,126 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17686 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8702, Invalid=32710, Unknown=0, NotChecked=0, Total=41412 [2019-12-19 05:49:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-19 05:49:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2480. [2019-12-19 05:49:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2480 states. [2019-12-19 05:49:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4701 transitions. [2019-12-19 05:49:30,190 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4701 transitions. Word has length 114 [2019-12-19 05:49:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:30,190 INFO L462 AbstractCegarLoop]: Abstraction has 2480 states and 4701 transitions. [2019-12-19 05:49:30,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-19 05:49:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4701 transitions. [2019-12-19 05:49:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-12-19 05:49:30,197 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:30,197 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:30,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:30,404 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash -567253697, now seen corresponding path program 7 times [2019-12-19 05:49:30,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:30,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491732980] [2019-12-19 05:49:30,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:30,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491732980] [2019-12-19 05:49:30,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596929511] [2019-12-19 05:49:30,740 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:30,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-19 05:49:30,837 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 41 proven. 97 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:49:30,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:30,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-12-19 05:49:30,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270486114] [2019-12-19 05:49:30,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-19 05:49:30,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:30,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-19 05:49:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2019-12-19 05:49:30,976 INFO L87 Difference]: Start difference. First operand 2480 states and 4701 transitions. Second operand 28 states. [2019-12-19 05:49:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:37,789 INFO L93 Difference]: Finished difference Result 7332 states and 13771 transitions. [2019-12-19 05:49:37,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2019-12-19 05:49:37,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 125 [2019-12-19 05:49:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:37,818 INFO L225 Difference]: With dead ends: 7332 [2019-12-19 05:49:37,818 INFO L226 Difference]: Without dead ends: 7332 [2019-12-19 05:49:37,822 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23454 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9542, Invalid=44980, Unknown=0, NotChecked=0, Total=54522 [2019-12-19 05:49:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2019-12-19 05:49:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 2212. [2019-12-19 05:49:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-12-19 05:49:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 4192 transitions. [2019-12-19 05:49:37,894 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 4192 transitions. Word has length 125 [2019-12-19 05:49:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:37,895 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 4192 transitions. [2019-12-19 05:49:37,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-19 05:49:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 4192 transitions. [2019-12-19 05:49:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-12-19 05:49:37,900 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:37,901 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:38,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:38,104 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:38,105 INFO L82 PathProgramCache]: Analyzing trace with hash -826724312, now seen corresponding path program 8 times [2019-12-19 05:49:38,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:38,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784981160] [2019-12-19 05:49:38,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:38,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784981160] [2019-12-19 05:49:38,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736634948] [2019-12-19 05:49:38,400 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:38,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-19 05:49:38,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:38,476 INFO L264 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-19 05:49:38,479 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 33 proven. 130 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:49:38,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:38,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-12-19 05:49:38,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898491681] [2019-12-19 05:49:38,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-19 05:49:38,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-19 05:49:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-12-19 05:49:38,638 INFO L87 Difference]: Start difference. First operand 2212 states and 4192 transitions. Second operand 32 states. [2019-12-19 05:49:47,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:49:47,836 INFO L93 Difference]: Finished difference Result 8044 states and 15141 transitions. [2019-12-19 05:49:47,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2019-12-19 05:49:47,836 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 133 [2019-12-19 05:49:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:49:47,864 INFO L225 Difference]: With dead ends: 8044 [2019-12-19 05:49:47,864 INFO L226 Difference]: Without dead ends: 8044 [2019-12-19 05:49:47,868 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37530 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=15056, Invalid=68754, Unknown=0, NotChecked=0, Total=83810 [2019-12-19 05:49:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2019-12-19 05:49:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 2626. [2019-12-19 05:49:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2019-12-19 05:49:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4975 transitions. [2019-12-19 05:49:47,946 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4975 transitions. Word has length 133 [2019-12-19 05:49:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:49:47,946 INFO L462 AbstractCegarLoop]: Abstraction has 2626 states and 4975 transitions. [2019-12-19 05:49:47,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-19 05:49:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4975 transitions. [2019-12-19 05:49:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-12-19 05:49:47,953 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:49:47,953 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:49:48,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:48,157 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:49:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:49:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1157606027, now seen corresponding path program 9 times [2019-12-19 05:49:48,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:49:48,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727048832] [2019-12-19 05:49:48,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:49:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:49:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:48,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727048832] [2019-12-19 05:49:48,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697455524] [2019-12-19 05:49:48,476 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:49:48,583 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-12-19 05:49:48,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:49:48,585 INFO L264 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-19 05:49:48,587 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:49:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 17 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:49:48,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:49:48,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2019-12-19 05:49:48,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116397053] [2019-12-19 05:49:48,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-19 05:49:48,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:49:48,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-19 05:49:48,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2019-12-19 05:49:48,805 INFO L87 Difference]: Start difference. First operand 2626 states and 4975 transitions. Second operand 36 states. [2019-12-19 05:50:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:50:03,065 INFO L93 Difference]: Finished difference Result 9691 states and 18241 transitions. [2019-12-19 05:50:03,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2019-12-19 05:50:03,065 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 141 [2019-12-19 05:50:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:50:03,082 INFO L225 Difference]: With dead ends: 9691 [2019-12-19 05:50:03,082 INFO L226 Difference]: Without dead ends: 9691 [2019-12-19 05:50:03,087 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58961 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=24702, Invalid=100968, Unknown=0, NotChecked=0, Total=125670 [2019-12-19 05:50:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9691 states. [2019-12-19 05:50:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9691 to 3042. [2019-12-19 05:50:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2019-12-19 05:50:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5762 transitions. [2019-12-19 05:50:03,181 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5762 transitions. Word has length 141 [2019-12-19 05:50:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:50:03,181 INFO L462 AbstractCegarLoop]: Abstraction has 3042 states and 5762 transitions. [2019-12-19 05:50:03,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-19 05:50:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5762 transitions. [2019-12-19 05:50:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-12-19 05:50:03,191 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:50:03,192 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:50:03,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:50:03,405 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:50:03,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:50:03,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1618346393, now seen corresponding path program 10 times [2019-12-19 05:50:03,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:50:03,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942177910] [2019-12-19 05:50:03,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:50:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:50:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:50:03,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942177910] [2019-12-19 05:50:03,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400168379] [2019-12-19 05:50:03,866 INFO L92 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 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 [2019-12-19 05:50:03,984 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-19 05:50:03,984 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:50:03,986 INFO L264 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-19 05:50:03,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:50:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 41 proven. 211 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:50:04,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:50:04,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2019-12-19 05:50:04,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966183812] [2019-12-19 05:50:04,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-19 05:50:04,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:50:04,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-19 05:50:04,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2019-12-19 05:50:04,278 INFO L87 Difference]: Start difference. First operand 3042 states and 5762 transitions. Second operand 38 states. [2019-12-19 05:50:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:50:20,070 INFO L93 Difference]: Finished difference Result 12862 states and 24213 transitions. [2019-12-19 05:50:20,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2019-12-19 05:50:20,070 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 152 [2019-12-19 05:50:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:50:20,091 INFO L225 Difference]: With dead ends: 12862 [2019-12-19 05:50:20,091 INFO L226 Difference]: Without dead ends: 12862 [2019-12-19 05:50:20,100 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89529 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=32216, Invalid=155706, Unknown=0, NotChecked=0, Total=187922 [2019-12-19 05:50:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12862 states. [2019-12-19 05:50:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12862 to 3588. [2019-12-19 05:50:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2019-12-19 05:50:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 6791 transitions. [2019-12-19 05:50:20,217 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 6791 transitions. Word has length 152 [2019-12-19 05:50:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:50:20,218 INFO L462 AbstractCegarLoop]: Abstraction has 3588 states and 6791 transitions. [2019-12-19 05:50:20,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-19 05:50:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 6791 transitions. [2019-12-19 05:50:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-12-19 05:50:20,227 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:50:20,227 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:50:20,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:50:20,431 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:50:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:50:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1241150644, now seen corresponding path program 11 times [2019-12-19 05:50:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:50:20,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211603560] [2019-12-19 05:50:20,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:50:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:50:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:50:20,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211603560] [2019-12-19 05:50:20,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690889127] [2019-12-19 05:50:20,869 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-12-19 05:50:20,955 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-19 05:50:20,955 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:50:20,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-19 05:50:20,959 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:50:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 21 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:50:21,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:50:21,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15] total 42 [2019-12-19 05:50:21,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871704013] [2019-12-19 05:50:21,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-19 05:50:21,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:50:21,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-19 05:50:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2019-12-19 05:50:21,250 INFO L87 Difference]: Start difference. First operand 3588 states and 6791 transitions. Second operand 42 states. [2019-12-19 05:50:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:50:44,873 INFO L93 Difference]: Finished difference Result 15156 states and 28525 transitions. [2019-12-19 05:50:44,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 496 states. [2019-12-19 05:50:44,873 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 160 [2019-12-19 05:50:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:50:44,891 INFO L225 Difference]: With dead ends: 15156 [2019-12-19 05:50:44,892 INFO L226 Difference]: Without dead ends: 15156 [2019-12-19 05:50:44,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133447 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=49969, Invalid=220951, Unknown=0, NotChecked=0, Total=270920 [2019-12-19 05:50:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2019-12-19 05:50:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 4074. [2019-12-19 05:50:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4074 states. [2019-12-19 05:50:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 7709 transitions. [2019-12-19 05:50:45,014 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 7709 transitions. Word has length 160 [2019-12-19 05:50:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:50:45,014 INFO L462 AbstractCegarLoop]: Abstraction has 4074 states and 7709 transitions. [2019-12-19 05:50:45,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-19 05:50:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 7709 transitions. [2019-12-19 05:50:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-12-19 05:50:45,023 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:50:45,023 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:50:45,226 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:50:45,227 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:50:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:50:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash 940454344, now seen corresponding path program 12 times [2019-12-19 05:50:45,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:50:45,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654822744] [2019-12-19 05:50:45,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:50:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:50:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:50:45,684 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654822744] [2019-12-19 05:50:45,684 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217932042] [2019-12-19 05:50:45,684 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2019-12-19 05:50:45,795 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-19 05:50:45,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:50:45,797 INFO L264 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-19 05:50:45,799 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:50:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 49 proven. 311 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:50:46,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:50:46,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2019-12-19 05:50:46,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161953165] [2019-12-19 05:50:46,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-19 05:50:46,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:50:46,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-19 05:50:46,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2019-12-19 05:50:46,086 INFO L87 Difference]: Start difference. First operand 4074 states and 7709 transitions. Second operand 44 states. [2019-12-19 05:51:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:51:10,865 INFO L93 Difference]: Finished difference Result 19308 states and 36339 transitions. [2019-12-19 05:51:10,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 575 states. [2019-12-19 05:51:10,866 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 171 [2019-12-19 05:51:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:51:10,884 INFO L225 Difference]: With dead ends: 19308 [2019-12-19 05:51:10,884 INFO L226 Difference]: Without dead ends: 19308 [2019-12-19 05:51:10,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 599 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179414 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=60403, Invalid=300197, Unknown=0, NotChecked=0, Total=360600 [2019-12-19 05:51:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2019-12-19 05:51:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 4628. [2019-12-19 05:51:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4628 states. [2019-12-19 05:51:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 8754 transitions. [2019-12-19 05:51:11,039 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 8754 transitions. Word has length 171 [2019-12-19 05:51:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:51:11,039 INFO L462 AbstractCegarLoop]: Abstraction has 4628 states and 8754 transitions. [2019-12-19 05:51:11,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-19 05:51:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 8754 transitions. [2019-12-19 05:51:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-12-19 05:51:11,049 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:51:11,050 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:51:11,256 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:51:11,256 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:51:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:51:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash -292964587, now seen corresponding path program 13 times [2019-12-19 05:51:11,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:51:11,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106911383] [2019-12-19 05:51:11,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:51:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:51:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 413 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:51:11,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106911383] [2019-12-19 05:51:11,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462761299] [2019-12-19 05:51:11,726 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2019-12-19 05:51:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:51:11,816 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-19 05:51:11,818 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:51:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 25 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:51:12,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:51:12,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17] total 48 [2019-12-19 05:51:12,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001759945] [2019-12-19 05:51:12,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-19 05:51:12,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:51:12,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-19 05:51:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1948, Unknown=0, NotChecked=0, Total=2256 [2019-12-19 05:51:12,167 INFO L87 Difference]: Start difference. First operand 4628 states and 8754 transitions. Second operand 48 states. [2019-12-19 05:51:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:51:49,026 INFO L93 Difference]: Finished difference Result 22144 states and 41684 transitions. [2019-12-19 05:51:49,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 666 states. [2019-12-19 05:51:49,026 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 179 [2019-12-19 05:51:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:51:49,041 INFO L225 Difference]: With dead ends: 22144 [2019-12-19 05:51:49,042 INFO L226 Difference]: Without dead ends: 22144 [2019-12-19 05:51:49,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 694 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246596 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=88108, Invalid=395612, Unknown=0, NotChecked=0, Total=483720 [2019-12-19 05:51:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22144 states. [2019-12-19 05:51:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22144 to 5184. [2019-12-19 05:51:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5184 states. [2019-12-19 05:51:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 9803 transitions. [2019-12-19 05:51:49,208 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 9803 transitions. Word has length 179 [2019-12-19 05:51:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:51:49,209 INFO L462 AbstractCegarLoop]: Abstraction has 5184 states and 9803 transitions. [2019-12-19 05:51:49,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-19 05:51:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 9803 transitions. [2019-12-19 05:51:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-12-19 05:51:49,220 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:51:49,221 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:51:49,432 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:51:49,432 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:51:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:51:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash 722557127, now seen corresponding path program 14 times [2019-12-19 05:51:49,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:51:49,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766339142] [2019-12-19 05:51:49,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:51:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:51:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:51:50,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766339142] [2019-12-19 05:51:50,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056129550] [2019-12-19 05:51:50,227 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-12-19 05:51:50,320 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-19 05:51:50,320 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:51:50,322 INFO L264 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-19 05:51:50,324 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:51:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 57 proven. 430 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-19 05:51:50,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:51:50,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2019-12-19 05:51:50,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866583312] [2019-12-19 05:51:50,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-19 05:51:50,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:51:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-19 05:51:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2124, Unknown=0, NotChecked=0, Total=2450 [2019-12-19 05:51:50,696 INFO L87 Difference]: Start difference. First operand 5184 states and 9803 transitions. Second operand 50 states. [2019-12-19 05:52:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-19 05:52:25,670 INFO L93 Difference]: Finished difference Result 27657 states and 52055 transitions. [2019-12-19 05:52:25,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 769 states. [2019-12-19 05:52:25,671 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 190 [2019-12-19 05:52:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-19 05:52:25,695 INFO L225 Difference]: With dead ends: 27657 [2019-12-19 05:52:25,695 INFO L226 Difference]: Without dead ends: 27657 [2019-12-19 05:52:25,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327355 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=104408, Invalid=533194, Unknown=0, NotChecked=0, Total=637602 [2019-12-19 05:52:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27657 states. [2019-12-19 05:52:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27657 to 5870. [2019-12-19 05:52:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5870 states. [2019-12-19 05:52:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5870 states to 5870 states and 11094 transitions. [2019-12-19 05:52:25,849 INFO L78 Accepts]: Start accepts. Automaton has 5870 states and 11094 transitions. Word has length 190 [2019-12-19 05:52:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-19 05:52:25,849 INFO L462 AbstractCegarLoop]: Abstraction has 5870 states and 11094 transitions. [2019-12-19 05:52:25,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-19 05:52:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5870 states and 11094 transitions. [2019-12-19 05:52:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-12-19 05:52:25,857 INFO L403 BasicCegarLoop]: Found error trace [2019-12-19 05:52:25,857 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-19 05:52:26,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:52:26,061 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-19 05:52:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-19 05:52:26,062 INFO L82 PathProgramCache]: Analyzing trace with hash 120680212, now seen corresponding path program 15 times [2019-12-19 05:52:26,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-19 05:52:26,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591671194] [2019-12-19 05:52:26,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-19 05:52:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-19 05:52:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:52:26,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591671194] [2019-12-19 05:52:26,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284209997] [2019-12-19 05:52:26,690 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-12-19 05:52:26,833 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-19 05:52:26,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-19 05:52:26,834 INFO L264 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-19 05:52:26,836 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-19 05:52:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 29 proven. 519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-19 05:52:27,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-19 05:52:27,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2019-12-19 05:52:27,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073391799] [2019-12-19 05:52:27,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-12-19 05:52:27,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-19 05:52:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-12-19 05:52:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2480, Unknown=0, NotChecked=0, Total=2862 [2019-12-19 05:52:27,318 INFO L87 Difference]: Start difference. First operand 5870 states and 11094 transitions. Second operand 54 states. Received shutdown request... [2019-12-19 05:53:16,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 779 states. [2019-12-19 05:53:16,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-19 05:53:16,529 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-19 05:53:16,541 WARN L227 ceAbstractionStarter]: Timeout [2019-12-19 05:53:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 05:53:16 BasicIcfg [2019-12-19 05:53:16,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-19 05:53:16,543 INFO L168 Benchmark]: Toolchain (without parser) took 246864.85 ms. Allocated memory was 145.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 100.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,544 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1188.17 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 106.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.03 ms. Allocated memory is still 202.9 MB. Free memory was 106.8 MB in the beginning and 104.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,545 INFO L168 Benchmark]: Boogie Preprocessor took 34.98 ms. Allocated memory is still 202.9 MB. Free memory was 104.2 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,546 INFO L168 Benchmark]: RCFGBuilder took 529.31 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 102.8 MB in the beginning and 195.8 MB in the end (delta: -93.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,547 INFO L168 Benchmark]: TraceAbstraction took 245004.05 ms. Allocated memory was 237.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 195.8 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-12-19 05:53:16,552 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1188.17 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 106.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.03 ms. Allocated memory is still 202.9 MB. Free memory was 106.8 MB in the beginning and 104.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.98 ms. Allocated memory is still 202.9 MB. Free memory was 104.2 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.31 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 102.8 MB in the beginning and 195.8 MB in the end (delta: -93.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245004.05 ms. Allocated memory was 237.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 195.8 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (5870states) and FLOYD_HOARE automaton (currently 779 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 820 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Result: TIMEOUT, OverallTime: 244.8s, OverallIterations: 18, TraceHistogramMax: 8, AutomataDifference: 229.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2001 SDtfs, 40903 SDslu, 37187 SDs, 0 SdLazy, 15306 SolverSat, 3959 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7317 GetRequests, 2070 SyntacticMatches, 1 SemanticMatches, 5245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474488 ImplicationChecksByTransitivity, 212.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5870occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 96562 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 4093 NumberOfCodeBlocks, 4055 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 4060 ConstructedInterpolants, 0 QuantifiedInterpolants, 1834038 SizeOfPredicates, 142 NumberOfNonLiveVariables, 4181 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 33 InterpolantComputations, 4 PerfectInterpolantSequences, 373/6211 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown