/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:20:49,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:20:49,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:20:49,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:20:49,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:20:49,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:20:49,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:20:49,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:20:49,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:20:49,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:20:49,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:20:49,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:20:49,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:20:49,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:20:49,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:20:49,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:20:49,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:20:49,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:20:49,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:20:49,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:20:49,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:20:49,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:20:49,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:20:49,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:20:49,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 19:20:49,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 19:20:49,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 19:20:49,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 19:20:49,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 19:20:49,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 19:20:49,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:20:49,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:20:49,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:20:49,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:20:49,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:20:49,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:20:49,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:20:49,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:20:49,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:20:49,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:20:49,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:20:49,456 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-SemanticLbe.epf [2019-12-18 19:20:49,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:20:49,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:20:49,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:20:49,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:20:49,472 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:20:49,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:20:49,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:20:49,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:20:49,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:20:49,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:20:49,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:20:49,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:20:49,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:20:49,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:20:49,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:20:49,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:20:49,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:20:49,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:20:49,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:20:49,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:20:49,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:20:49,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:20:49,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:20:49,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:20:49,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:20:49,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:20:49,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:20:49,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:20:49,780 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:20:49,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-18 19:20:49,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b64b8e113/3a233ba1412a4a759d0fb4d931bfd597/FLAG6e446d7e0 [2019-12-18 19:20:50,433 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:20:50,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-18 19:20:50,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b64b8e113/3a233ba1412a4a759d0fb4d931bfd597/FLAG6e446d7e0 [2019-12-18 19:20:50,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b64b8e113/3a233ba1412a4a759d0fb4d931bfd597 [2019-12-18 19:20:50,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:20:50,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:20:50,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:20:50,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:20:50,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:20:50,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:20:50" (1/1) ... [2019-12-18 19:20:50,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4ac006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:50, skipping insertion in model container [2019-12-18 19:20:50,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:20:50" (1/1) ... [2019-12-18 19:20:50,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:20:50,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:20:51,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:20:51,501 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:20:51,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:20:51,799 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:20:51,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51 WrapperNode [2019-12-18 19:20:51,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:20:51,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:20:51,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:20:51,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:20:51,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:20:51,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:20:51,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:20:51,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:20:51,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (1/1) ... [2019-12-18 19:20:51,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:20:51,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:20:51,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:20:51,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:20:51,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (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 [2019-12-18 19:20:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:20:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:20:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 19:20:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-18 19:20:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-18 19:20:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:20:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:20:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:20:51,973 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 19:20:52,445 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:20:52,446 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-18 19:20:52,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:20:52 BoogieIcfgContainer [2019-12-18 19:20:52,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:20:52,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:20:52,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:20:52,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:20:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:20:50" (1/3) ... [2019-12-18 19:20:52,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd8c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:20:52, skipping insertion in model container [2019-12-18 19:20:52,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:20:51" (2/3) ... [2019-12-18 19:20:52,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd8c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:20:52, skipping insertion in model container [2019-12-18 19:20:52,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:20:52" (3/3) ... [2019-12-18 19:20:52,455 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-18 19:20:52,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:20:52,466 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:20:52,473 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 19:20:52,475 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:20:52,498 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,499 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,499 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,499 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,499 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,500 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,500 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,500 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,501 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,501 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,501 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,501 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,501 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,502 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,502 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,502 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,502 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,503 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,503 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,503 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,503 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,507 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,507 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,507 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,508 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,508 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,508 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,508 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,508 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:20:52,531 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 19:20:52,548 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:20:52,548 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:20:52,548 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:20:52,548 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:20:52,549 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:20:52,549 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:20:52,549 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:20:52,549 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:20:52,561 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions [2019-12-18 19:20:52,563 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-18 19:20:52,610 INFO L126 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-18 19:20:52,611 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:20:52,617 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 6/82 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-18 19:20:52,621 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-18 19:20:52,654 INFO L126 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-18 19:20:52,654 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:20:52,656 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 6/82 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-18 19:20:52,658 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2019-12-18 19:20:52,662 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 19:20:54,137 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-18 19:20:54,378 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-18 19:20:54,929 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-18 19:20:55,169 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-18 19:20:55,625 WARN L192 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-18 19:20:55,988 WARN L192 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-18 19:20:57,215 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2019-12-18 19:20:57,668 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-18 19:20:57,672 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2019-12-18 19:20:57,672 INFO L214 etLargeBlockEncoding]: Total number of compositions: 77 [2019-12-18 19:20:57,676 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-18 19:20:57,684 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2019-12-18 19:20:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-18 19:20:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 19:20:57,692 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:20:57,693 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:20:57,693 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:20:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:20:57,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1101690005, now seen corresponding path program 1 times [2019-12-18 19:20:57,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:20:57,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164492751] [2019-12-18 19:20:57,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:20:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:20:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:20:57,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164492751] [2019-12-18 19:20:57,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:20:57,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:20:57,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790687158] [2019-12-18 19:20:57,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:20:57,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:20:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:20:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:20:57,951 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-18 19:20:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:20:57,988 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2019-12-18 19:20:57,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:20:57,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 19:20:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:20:58,001 INFO L225 Difference]: With dead ends: 20 [2019-12-18 19:20:58,001 INFO L226 Difference]: Without dead ends: 20 [2019-12-18 19:20:58,003 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 [2019-12-18 19:20:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-18 19:20:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-18 19:20:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-18 19:20:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2019-12-18 19:20:58,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2019-12-18 19:20:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:20:58,041 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2019-12-18 19:20:58,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:20:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2019-12-18 19:20:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:20:58,042 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:20:58,042 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:20:58,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:20:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:20:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash -176981712, now seen corresponding path program 1 times [2019-12-18 19:20:58,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:20:58,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192455457] [2019-12-18 19:20:58,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:20:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:20:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:20:58,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192455457] [2019-12-18 19:20:58,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:20:58,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:20:58,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630931600] [2019-12-18 19:20:58,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:20:58,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:20:58,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:20:58,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:20:58,118 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2019-12-18 19:20:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:20:58,131 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2019-12-18 19:20:58,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:20:58,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 19:20:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:20:58,133 INFO L225 Difference]: With dead ends: 28 [2019-12-18 19:20:58,133 INFO L226 Difference]: Without dead ends: 28 [2019-12-18 19:20:58,134 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 [2019-12-18 19:20:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-18 19:20:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-18 19:20:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-18 19:20:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2019-12-18 19:20:58,139 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2019-12-18 19:20:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:20:58,140 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2019-12-18 19:20:58,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:20:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2019-12-18 19:20:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 19:20:58,141 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:20:58,141 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:20:58,141 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:20:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:20:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1360713053, now seen corresponding path program 1 times [2019-12-18 19:20:58,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:20:58,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949263078] [2019-12-18 19:20:58,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:20:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:20:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:20:58,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949263078] [2019-12-18 19:20:58,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354414618] [2019-12-18 19:20:58,252 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 [2019-12-18 19:20:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:20:58,353 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-18 19:20:58,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:20:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:20:58,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:20:58,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-18 19:20:58,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155838988] [2019-12-18 19:20:58,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 19:20:58,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:20:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 19:20:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-18 19:20:58,400 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 8 states. [2019-12-18 19:20:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:20:58,663 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2019-12-18 19:20:58,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-18 19:20:58,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-18 19:20:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:20:58,665 INFO L225 Difference]: With dead ends: 64 [2019-12-18 19:20:58,665 INFO L226 Difference]: Without dead ends: 64 [2019-12-18 19:20:58,666 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2019-12-18 19:20:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-18 19:20:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-12-18 19:20:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 19:20:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2019-12-18 19:20:58,673 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 11 [2019-12-18 19:20:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:20:58,673 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2019-12-18 19:20:58,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 19:20:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2019-12-18 19:20:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:20:58,675 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:20:58,675 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:20:58,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:20:58,880 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:20:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:20:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632394, now seen corresponding path program 2 times [2019-12-18 19:20:58,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:20:58,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901757708] [2019-12-18 19:20:58,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:20:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:20:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:20:59,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901757708] [2019-12-18 19:20:59,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5379086] [2019-12-18 19:20:59,026 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 [2019-12-18 19:20:59,108 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 19:20:59,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:20:59,109 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:20:59,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:20:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:20:59,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:20:59,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-12-18 19:20:59,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871110235] [2019-12-18 19:20:59,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-18 19:20:59,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:20:59,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-18 19:20:59,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-18 19:20:59,143 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand 11 states. [2019-12-18 19:20:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:20:59,659 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2019-12-18 19:20:59,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-18 19:20:59,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-18 19:20:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:20:59,662 INFO L225 Difference]: With dead ends: 112 [2019-12-18 19:20:59,662 INFO L226 Difference]: Without dead ends: 112 [2019-12-18 19:20:59,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1037, Unknown=0, NotChecked=0, Total=1482 [2019-12-18 19:20:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-18 19:20:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 40. [2019-12-18 19:20:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-18 19:20:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2019-12-18 19:20:59,681 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 13 [2019-12-18 19:20:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:20:59,683 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2019-12-18 19:20:59,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-18 19:20:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2019-12-18 19:20:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:20:59,685 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:20:59,685 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:20:59,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:20:59,890 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:20:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:20:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1552984073, now seen corresponding path program 3 times [2019-12-18 19:20:59,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:20:59,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070569602] [2019-12-18 19:20:59,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:20:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:00,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070569602] [2019-12-18 19:21:00,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846818387] [2019-12-18 19:21:00,036 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 [2019-12-18 19:21:00,115 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-18 19:21:00,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:00,128 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-18 19:21:00,129 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 19:21:00,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:00,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2019-12-18 19:21:00,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539883664] [2019-12-18 19:21:00,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-18 19:21:00,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:00,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-18 19:21:00,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-18 19:21:00,150 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 12 states. [2019-12-18 19:21:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:00,770 INFO L93 Difference]: Finished difference Result 200 states and 392 transitions. [2019-12-18 19:21:00,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-18 19:21:00,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-12-18 19:21:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:00,775 INFO L225 Difference]: With dead ends: 200 [2019-12-18 19:21:00,775 INFO L226 Difference]: Without dead ends: 196 [2019-12-18 19:21:00,776 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2019-12-18 19:21:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-18 19:21:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 65. [2019-12-18 19:21:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-18 19:21:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 135 transitions. [2019-12-18 19:21:00,787 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 135 transitions. Word has length 15 [2019-12-18 19:21:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:00,788 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 135 transitions. [2019-12-18 19:21:00,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-18 19:21:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 135 transitions. [2019-12-18 19:21:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:21:00,789 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:00,789 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:00,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:00,992 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:00,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:00,993 INFO L82 PathProgramCache]: Analyzing trace with hash -867499506, now seen corresponding path program 4 times [2019-12-18 19:21:00,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:00,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635697610] [2019-12-18 19:21:00,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:01,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635697610] [2019-12-18 19:21:01,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787957154] [2019-12-18 19:21:01,104 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 [2019-12-18 19:21:01,171 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 19:21:01,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:01,173 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:21:01,174 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-18 19:21:01,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:01,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-18 19:21:01,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593854977] [2019-12-18 19:21:01,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-18 19:21:01,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-18 19:21:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-12-18 19:21:01,234 INFO L87 Difference]: Start difference. First operand 65 states and 135 transitions. Second operand 15 states. [2019-12-18 19:21:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:02,479 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2019-12-18 19:21:02,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-12-18 19:21:02,479 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-12-18 19:21:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:02,481 INFO L225 Difference]: With dead ends: 235 [2019-12-18 19:21:02,482 INFO L226 Difference]: Without dead ends: 235 [2019-12-18 19:21:02,485 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1720, Invalid=4442, Unknown=0, NotChecked=0, Total=6162 [2019-12-18 19:21:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-18 19:21:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 59. [2019-12-18 19:21:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-18 19:21:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2019-12-18 19:21:02,494 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 16 [2019-12-18 19:21:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:02,495 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2019-12-18 19:21:02,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-18 19:21:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2019-12-18 19:21:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 19:21:02,496 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:02,496 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:02,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:02,704 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2055665343, now seen corresponding path program 5 times [2019-12-18 19:21:02,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:02,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697440532] [2019-12-18 19:21:02,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:02,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697440532] [2019-12-18 19:21:02,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648320072] [2019-12-18 19:21:02,872 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 [2019-12-18 19:21:02,956 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-18 19:21:02,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:02,958 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 19:21:02,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-18 19:21:03,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:03,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2019-12-18 19:21:03,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497695263] [2019-12-18 19:21:03,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-18 19:21:03,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-18 19:21:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-18 19:21:03,028 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 16 states. [2019-12-18 19:21:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:04,256 INFO L93 Difference]: Finished difference Result 397 states and 785 transitions. [2019-12-18 19:21:04,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-18 19:21:04,256 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-12-18 19:21:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:04,260 INFO L225 Difference]: With dead ends: 397 [2019-12-18 19:21:04,260 INFO L226 Difference]: Without dead ends: 391 [2019-12-18 19:21:04,263 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1775, Invalid=4705, Unknown=0, NotChecked=0, Total=6480 [2019-12-18 19:21:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-18 19:21:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 100. [2019-12-18 19:21:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-18 19:21:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 211 transitions. [2019-12-18 19:21:04,274 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 211 transitions. Word has length 18 [2019-12-18 19:21:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:04,275 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 211 transitions. [2019-12-18 19:21:04,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-18 19:21:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 211 transitions. [2019-12-18 19:21:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 19:21:04,276 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:04,276 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:04,480 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:04,480 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash 729250308, now seen corresponding path program 6 times [2019-12-18 19:21:04,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:04,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028468765] [2019-12-18 19:21:04,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:04,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028468765] [2019-12-18 19:21:04,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558209820] [2019-12-18 19:21:04,606 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 [2019-12-18 19:21:04,712 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-18 19:21:04,713 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:04,714 INFO L264 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:21:04,717 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 19:21:04,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:04,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2019-12-18 19:21:04,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813453085] [2019-12-18 19:21:04,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-18 19:21:04,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:04,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-18 19:21:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-18 19:21:04,800 INFO L87 Difference]: Start difference. First operand 100 states and 211 transitions. Second operand 19 states. [2019-12-18 19:21:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:07,619 INFO L93 Difference]: Finished difference Result 451 states and 898 transitions. [2019-12-18 19:21:07,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-12-18 19:21:07,619 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-12-18 19:21:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:07,623 INFO L225 Difference]: With dead ends: 451 [2019-12-18 19:21:07,623 INFO L226 Difference]: Without dead ends: 451 [2019-12-18 19:21:07,627 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8907 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5119, Invalid=14063, Unknown=0, NotChecked=0, Total=19182 [2019-12-18 19:21:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-12-18 19:21:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 82. [2019-12-18 19:21:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-18 19:21:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-18 19:21:07,637 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2019-12-18 19:21:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:07,638 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-18 19:21:07,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-18 19:21:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-18 19:21:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-18 19:21:07,639 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:07,639 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:07,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:07,845 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1093713423, now seen corresponding path program 7 times [2019-12-18 19:21:07,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:07,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938755177] [2019-12-18 19:21:07,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:07,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938755177] [2019-12-18 19:21:07,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989220276] [2019-12-18 19:21:07,986 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 [2019-12-18 19:21:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:08,050 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-18 19:21:08,051 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 19:21:08,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:08,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2019-12-18 19:21:08,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747830902] [2019-12-18 19:21:08,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-18 19:21:08,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:08,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-18 19:21:08,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-18 19:21:08,134 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 22 states. [2019-12-18 19:21:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:12,433 INFO L93 Difference]: Finished difference Result 639 states and 1274 transitions. [2019-12-18 19:21:12,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-12-18 19:21:12,433 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-18 19:21:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:12,438 INFO L225 Difference]: With dead ends: 639 [2019-12-18 19:21:12,438 INFO L226 Difference]: Without dead ends: 639 [2019-12-18 19:21:12,447 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19012 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=10080, Invalid=28140, Unknown=0, NotChecked=0, Total=38220 [2019-12-18 19:21:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-12-18 19:21:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 94. [2019-12-18 19:21:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-18 19:21:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2019-12-18 19:21:12,457 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 21 [2019-12-18 19:21:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:12,457 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2019-12-18 19:21:12,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-18 19:21:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2019-12-18 19:21:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 19:21:12,458 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:12,459 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:12,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:12,664 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash -615202146, now seen corresponding path program 8 times [2019-12-18 19:21:12,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:12,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281950204] [2019-12-18 19:21:12,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:12,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281950204] [2019-12-18 19:21:12,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567602745] [2019-12-18 19:21:12,837 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 [2019-12-18 19:21:12,901 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 19:21:12,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:12,902 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-18 19:21:12,903 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 19:21:13,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:13,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2019-12-18 19:21:13,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496510660] [2019-12-18 19:21:13,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-18 19:21:13,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:13,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-18 19:21:13,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2019-12-18 19:21:13,025 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand 25 states. [2019-12-18 19:21:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:19,844 INFO L93 Difference]: Finished difference Result 869 states and 1734 transitions. [2019-12-18 19:21:19,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-12-18 19:21:19,845 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 23 [2019-12-18 19:21:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:19,851 INFO L225 Difference]: With dead ends: 869 [2019-12-18 19:21:19,851 INFO L226 Difference]: Without dead ends: 869 [2019-12-18 19:21:19,856 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36612 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=18334, Invalid=51626, Unknown=0, NotChecked=0, Total=69960 [2019-12-18 19:21:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-12-18 19:21:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 106. [2019-12-18 19:21:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-18 19:21:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2019-12-18 19:21:19,868 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 23 [2019-12-18 19:21:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:19,868 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2019-12-18 19:21:19,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-18 19:21:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2019-12-18 19:21:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-18 19:21:19,869 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:19,869 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:20,073 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:20,073 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:20,074 INFO L82 PathProgramCache]: Analyzing trace with hash -327365621, now seen corresponding path program 9 times [2019-12-18 19:21:20,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:20,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953701785] [2019-12-18 19:21:20,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:20,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953701785] [2019-12-18 19:21:20,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709373881] [2019-12-18 19:21:20,273 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 [2019-12-18 19:21:20,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-18 19:21:20,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:20,381 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 19:21:20,383 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-18 19:21:20,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:20,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 24 [2019-12-18 19:21:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091423506] [2019-12-18 19:21:20,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-18 19:21:20,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:20,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-18 19:21:20,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-18 19:21:20,469 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand 24 states. [2019-12-18 19:21:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:24,171 INFO L93 Difference]: Finished difference Result 1267 states and 2524 transitions. [2019-12-18 19:21:24,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-12-18 19:21:24,172 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2019-12-18 19:21:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:24,180 INFO L225 Difference]: With dead ends: 1267 [2019-12-18 19:21:24,180 INFO L226 Difference]: Without dead ends: 1259 [2019-12-18 19:21:24,183 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17285 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9341, Invalid=26191, Unknown=0, NotChecked=0, Total=35532 [2019-12-18 19:21:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2019-12-18 19:21:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 188. [2019-12-18 19:21:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-18 19:21:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 398 transitions. [2019-12-18 19:21:24,198 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 398 transitions. Word has length 25 [2019-12-18 19:21:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:24,198 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 398 transitions. [2019-12-18 19:21:24,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-18 19:21:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 398 transitions. [2019-12-18 19:21:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-18 19:21:24,200 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:24,200 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:24,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:24,405 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:24,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1528033158, now seen corresponding path program 10 times [2019-12-18 19:21:24,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:24,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308623815] [2019-12-18 19:21:24,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:24,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308623815] [2019-12-18 19:21:24,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455472937] [2019-12-18 19:21:24,615 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 [2019-12-18 19:21:24,677 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 19:21:24,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:24,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 19:21:24,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-18 19:21:24,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:24,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 29 [2019-12-18 19:21:24,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82899624] [2019-12-18 19:21:24,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-18 19:21:24,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-18 19:21:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2019-12-18 19:21:24,787 INFO L87 Difference]: Start difference. First operand 188 states and 398 transitions. Second operand 29 states. [2019-12-18 19:21:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:36,554 INFO L93 Difference]: Finished difference Result 1400 states and 2796 transitions. [2019-12-18 19:21:36,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2019-12-18 19:21:36,555 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2019-12-18 19:21:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:36,564 INFO L225 Difference]: With dead ends: 1400 [2019-12-18 19:21:36,564 INFO L226 Difference]: Without dead ends: 1400 [2019-12-18 19:21:36,568 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84029 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=39039, Invalid=113451, Unknown=0, NotChecked=0, Total=152490 [2019-12-18 19:21:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-12-18 19:21:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 137. [2019-12-18 19:21:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-12-18 19:21:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 270 transitions. [2019-12-18 19:21:36,582 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 270 transitions. Word has length 26 [2019-12-18 19:21:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:36,582 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 270 transitions. [2019-12-18 19:21:36,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-18 19:21:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 270 transitions. [2019-12-18 19:21:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-18 19:21:36,584 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:36,584 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:36,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:36,787 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:36,788 INFO L82 PathProgramCache]: Analyzing trace with hash 655160301, now seen corresponding path program 11 times [2019-12-18 19:21:36,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:36,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310548143] [2019-12-18 19:21:36,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:37,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310548143] [2019-12-18 19:21:37,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368408359] [2019-12-18 19:21:37,011 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 [2019-12-18 19:21:37,064 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-18 19:21:37,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:37,065 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 19:21:37,066 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-18 19:21:37,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:37,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 28 [2019-12-18 19:21:37,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491449754] [2019-12-18 19:21:37,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-18 19:21:37,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-18 19:21:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-12-18 19:21:37,137 INFO L87 Difference]: Start difference. First operand 137 states and 270 transitions. Second operand 28 states. [2019-12-18 19:21:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:21:42,987 INFO L93 Difference]: Finished difference Result 1982 states and 3953 transitions. [2019-12-18 19:21:42,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2019-12-18 19:21:42,988 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-12-18 19:21:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:21:42,997 INFO L225 Difference]: With dead ends: 1982 [2019-12-18 19:21:42,997 INFO L226 Difference]: Without dead ends: 1972 [2019-12-18 19:21:43,000 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41303 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=20189, Invalid=57931, Unknown=0, NotChecked=0, Total=78120 [2019-12-18 19:21:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2019-12-18 19:21:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 249. [2019-12-18 19:21:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-12-18 19:21:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 528 transitions. [2019-12-18 19:21:43,017 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 528 transitions. Word has length 28 [2019-12-18 19:21:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:21:43,017 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 528 transitions. [2019-12-18 19:21:43,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-18 19:21:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 528 transitions. [2019-12-18 19:21:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-18 19:21:43,019 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:21:43,019 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:21:43,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:21:43,223 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:21:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:21:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1134500648, now seen corresponding path program 12 times [2019-12-18 19:21:43,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:21:43,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377545321] [2019-12-18 19:21:43,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:21:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:21:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:21:43,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377545321] [2019-12-18 19:21:43,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865077767] [2019-12-18 19:21:43,564 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 [2019-12-18 19:21:43,661 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-18 19:21:43,661 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:21:43,662 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-18 19:21:43,670 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:21:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 19:21:43,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:21:43,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 33 [2019-12-18 19:21:43,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324493542] [2019-12-18 19:21:43,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-18 19:21:43,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:21:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-18 19:21:43,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-12-18 19:21:43,819 INFO L87 Difference]: Start difference. First operand 249 states and 528 transitions. Second operand 33 states. [2019-12-18 19:22:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:22:03,870 INFO L93 Difference]: Finished difference Result 2150 states and 4296 transitions. [2019-12-18 19:22:03,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2019-12-18 19:22:03,870 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-12-18 19:22:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:22:03,879 INFO L225 Difference]: With dead ends: 2150 [2019-12-18 19:22:03,879 INFO L226 Difference]: Without dead ends: 2150 [2019-12-18 19:22:03,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173324 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=76120, Invalid=226930, Unknown=0, NotChecked=0, Total=303050 [2019-12-18 19:22:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-12-18 19:22:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 172. [2019-12-18 19:22:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-18 19:22:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2019-12-18 19:22:03,901 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2019-12-18 19:22:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:22:03,901 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2019-12-18 19:22:03,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-18 19:22:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2019-12-18 19:22:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-18 19:22:03,902 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:22:03,902 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:22:04,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:22:04,106 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:22:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:22:04,106 INFO L82 PathProgramCache]: Analyzing trace with hash -307926907, now seen corresponding path program 13 times [2019-12-18 19:22:04,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:22:04,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985645973] [2019-12-18 19:22:04,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:22:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:22:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:22:04,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985645973] [2019-12-18 19:22:04,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890311735] [2019-12-18 19:22:04,374 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 [2019-12-18 19:22:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:22:04,445 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-18 19:22:04,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:22:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 19:22:04,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:22:04,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 36 [2019-12-18 19:22:04,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796129308] [2019-12-18 19:22:04,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-18 19:22:04,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:22:04,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-18 19:22:04,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2019-12-18 19:22:04,642 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 36 states. [2019-12-18 19:22:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:22:33,169 INFO L93 Difference]: Finished difference Result 2656 states and 5308 transitions. [2019-12-18 19:22:33,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2019-12-18 19:22:33,170 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 31 [2019-12-18 19:22:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:22:33,180 INFO L225 Difference]: With dead ends: 2656 [2019-12-18 19:22:33,180 INFO L226 Difference]: Without dead ends: 2656 [2019-12-18 19:22:33,189 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273352 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=117282, Invalid=349890, Unknown=0, NotChecked=0, Total=467172 [2019-12-18 19:22:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2019-12-18 19:22:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 188. [2019-12-18 19:22:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-18 19:22:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 372 transitions. [2019-12-18 19:22:33,206 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 372 transitions. Word has length 31 [2019-12-18 19:22:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:22:33,207 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 372 transitions. [2019-12-18 19:22:33,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-18 19:22:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 372 transitions. [2019-12-18 19:22:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-18 19:22:33,208 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:22:33,208 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:22:33,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:22:33,413 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:22:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:22:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash -539511566, now seen corresponding path program 14 times [2019-12-18 19:22:33,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:22:33,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119204666] [2019-12-18 19:22:33,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:22:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:22:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:22:33,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119204666] [2019-12-18 19:22:33,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921525588] [2019-12-18 19:22:33,721 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 [2019-12-18 19:22:33,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 19:22:33,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:22:33,794 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-18 19:22:33,795 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:22:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 19:22:33,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:22:33,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 39 [2019-12-18 19:22:33,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391778418] [2019-12-18 19:22:33,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-18 19:22:33,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:22:33,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-18 19:22:33,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2019-12-18 19:22:33,994 INFO L87 Difference]: Start difference. First operand 188 states and 372 transitions. Second operand 39 states. [2019-12-18 19:23:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:23:13,690 INFO L93 Difference]: Finished difference Result 3228 states and 6452 transitions. [2019-12-18 19:23:13,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 825 states. [2019-12-18 19:23:13,691 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 33 [2019-12-18 19:23:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:23:13,704 INFO L225 Difference]: With dead ends: 3228 [2019-12-18 19:23:13,704 INFO L226 Difference]: Without dead ends: 3228 [2019-12-18 19:23:13,718 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415362 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=174859, Invalid=521531, Unknown=0, NotChecked=0, Total=696390 [2019-12-18 19:23:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-12-18 19:23:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 204. [2019-12-18 19:23:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-12-18 19:23:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 404 transitions. [2019-12-18 19:23:13,736 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 404 transitions. Word has length 33 [2019-12-18 19:23:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:23:13,736 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 404 transitions. [2019-12-18 19:23:13,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-18 19:23:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 404 transitions. [2019-12-18 19:23:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-18 19:23:13,737 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:23:13,737 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:23:13,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:23:13,949 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:23:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:23:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash 245930527, now seen corresponding path program 15 times [2019-12-18 19:23:13,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:23:13,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782295589] [2019-12-18 19:23:13,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:23:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:23:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:23:14,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782295589] [2019-12-18 19:23:14,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525995406] [2019-12-18 19:23:14,424 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 [2019-12-18 19:23:14,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-18 19:23:14,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:23:14,496 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-18 19:23:14,496 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:23:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-12-18 19:23:14,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:23:14,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8] total 36 [2019-12-18 19:23:14,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299024224] [2019-12-18 19:23:14,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-18 19:23:14,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:23:14,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-18 19:23:14,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-12-18 19:23:14,594 INFO L87 Difference]: Start difference. First operand 204 states and 404 transitions. Second operand 36 states. [2019-12-18 19:23:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:23:27,143 INFO L93 Difference]: Finished difference Result 4264 states and 8516 transitions. [2019-12-18 19:23:27,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2019-12-18 19:23:27,144 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2019-12-18 19:23:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:23:27,160 INFO L225 Difference]: With dead ends: 4264 [2019-12-18 19:23:27,160 INFO L226 Difference]: Without dead ends: 4252 [2019-12-18 19:23:27,168 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135844 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=60247, Invalid=176435, Unknown=0, NotChecked=0, Total=236682 [2019-12-18 19:23:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-18 19:23:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 379. [2019-12-18 19:23:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-12-18 19:23:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 801 transitions. [2019-12-18 19:23:27,194 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 801 transitions. Word has length 35 [2019-12-18 19:23:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:23:27,195 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 801 transitions. [2019-12-18 19:23:27,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-18 19:23:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 801 transitions. [2019-12-18 19:23:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-18 19:23:27,196 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:23:27,196 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:23:27,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:23:27,400 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:23:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:23:27,400 INFO L82 PathProgramCache]: Analyzing trace with hash -935721754, now seen corresponding path program 16 times [2019-12-18 19:23:27,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:23:27,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052367051] [2019-12-18 19:23:27,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:23:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:23:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:23:27,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052367051] [2019-12-18 19:23:27,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442191418] [2019-12-18 19:23:27,763 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:23:27,838 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 19:23:27,838 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:23:27,839 INFO L264 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-18 19:23:27,840 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:23:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-18 19:23:28,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:23:28,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 43 [2019-12-18 19:23:28,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487362697] [2019-12-18 19:23:28,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-18 19:23:28,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:23:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-18 19:23:28,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2019-12-18 19:23:28,070 INFO L87 Difference]: Start difference. First operand 379 states and 801 transitions. Second operand 43 states. [2019-12-18 19:24:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:24:30,524 INFO L93 Difference]: Finished difference Result 4559 states and 9114 transitions. [2019-12-18 19:24:30,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1084 states. [2019-12-18 19:24:30,524 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 36 [2019-12-18 19:24:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:24:30,546 INFO L225 Difference]: With dead ends: 4559 [2019-12-18 19:24:30,546 INFO L226 Difference]: Without dead ends: 4559 [2019-12-18 19:24:30,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728882 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=296426, Invalid=901504, Unknown=0, NotChecked=0, Total=1197930 [2019-12-18 19:24:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2019-12-18 19:24:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 247. [2019-12-18 19:24:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-18 19:24:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2019-12-18 19:24:30,591 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 36 [2019-12-18 19:24:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:24:30,592 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2019-12-18 19:24:30,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-18 19:24:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2019-12-18 19:24:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-18 19:24:30,593 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:24:30,593 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:24:30,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:24:30,796 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:24:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:24:30,797 INFO L82 PathProgramCache]: Analyzing trace with hash -812157799, now seen corresponding path program 17 times [2019-12-18 19:24:30,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:24:30,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779863018] [2019-12-18 19:24:30,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:24:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:24:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:24:31,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779863018] [2019-12-18 19:24:31,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388127483] [2019-12-18 19:24:31,259 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:24:31,332 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-18 19:24:31,332 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:24:31,333 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-18 19:24:31,334 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:24:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-18 19:24:31,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:24:31,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 40 [2019-12-18 19:24:31,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446511941] [2019-12-18 19:24:31,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-18 19:24:31,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:24:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-18 19:24:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2019-12-18 19:24:31,703 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 40 states. [2019-12-18 19:24:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:24:50,513 INFO L93 Difference]: Finished difference Result 5929 states and 11845 transitions. [2019-12-18 19:24:50,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-18 19:24:50,513 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-12-18 19:24:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:24:50,527 INFO L225 Difference]: With dead ends: 5929 [2019-12-18 19:24:50,527 INFO L226 Difference]: Without dead ends: 5915 [2019-12-18 19:24:50,541 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252388 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=106734, Invalid=316416, Unknown=0, NotChecked=0, Total=423150 [2019-12-18 19:24:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2019-12-18 19:24:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 466. [2019-12-18 19:24:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-18 19:24:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 985 transitions. [2019-12-18 19:24:50,574 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 985 transitions. Word has length 38 [2019-12-18 19:24:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:24:50,574 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 985 transitions. [2019-12-18 19:24:50,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-18 19:24:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 985 transitions. [2019-12-18 19:24:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-18 19:24:50,575 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:24:50,576 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:24:50,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:24:50,779 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:24:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:24:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 623278508, now seen corresponding path program 18 times [2019-12-18 19:24:50,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:24:50,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249825940] [2019-12-18 19:24:50,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:24:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:24:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:24:51,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249825940] [2019-12-18 19:24:51,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756085957] [2019-12-18 19:24:51,232 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:24:51,328 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-18 19:24:51,328 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 19:24:51,329 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 19:24:51,330 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:24:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-18 19:24:51,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:24:51,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 42 [2019-12-18 19:24:51,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107100074] [2019-12-18 19:24:51,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-18 19:24:51,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:24:51,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-18 19:24:51,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-12-18 19:24:51,490 INFO L87 Difference]: Start difference. First operand 466 states and 985 transitions. Second operand 42 states. Received shutdown request... [2019-12-18 19:24:59,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 335 states. [2019-12-18 19:24:59,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:24:59,792 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 19:24:59,796 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 19:24:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:24:59 BasicIcfg [2019-12-18 19:24:59,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:24:59,798 INFO L168 Benchmark]: Toolchain (without parser) took 249096.29 ms. Allocated memory was 137.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 100.3 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 226.7 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,798 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1097.03 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 107.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.43 ms. Allocated memory is still 202.9 MB. Free memory was 107.7 MB in the beginning and 105.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,800 INFO L168 Benchmark]: Boogie Preprocessor took 32.00 ms. Allocated memory is still 202.9 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,800 INFO L168 Benchmark]: RCFGBuilder took 555.66 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 103.5 MB in the beginning and 194.7 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,801 INFO L168 Benchmark]: TraceAbstraction took 247347.88 ms. Allocated memory was 234.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 194.7 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 224.1 MB. Max. memory is 7.1 GB. [2019-12-18 19:24:59,803 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1097.03 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 107.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.43 ms. Allocated memory is still 202.9 MB. Free memory was 107.7 MB in the beginning and 105.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.00 ms. Allocated memory is still 202.9 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.66 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 103.5 MB in the beginning and 194.7 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247347.88 ms. Allocated memory was 234.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 194.7 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 224.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.1s, 82 ProgramPointsBefore, 14 ProgramPointsAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 328 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 510 CheckedPairsTotal, 77 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 335 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 369 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 247.2s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 229.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 5790 SDslu, 4311 SDs, 0 SdLazy, 5064 SolverSat, 13155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7206 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 6360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262819 ImplicationChecksByTransitivity, 209.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 27544 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 929 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 60815 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2695 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 647/2473 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