/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:36:22,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:36:22,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:36:22,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:36:22,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:36:22,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:36:22,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:36:22,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:36:22,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:36:22,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:36:22,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:36:22,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:36:22,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:36:22,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:36:22,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:36:22,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:36:22,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:36:22,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:36:22,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:36:22,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:36:22,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:36:22,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:36:22,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:36:22,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:36:22,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:36:22,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:36:22,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:36:22,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:36:22,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:36:22,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:36:22,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:36:22,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:36:22,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:36:22,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:36:22,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:36:22,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:36:22,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:36:22,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:36:22,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:36:22,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:36:22,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:36:22,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:36:22,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:36:22,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:36:22,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:36:22,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:36:22,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:36:22,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:36:22,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:36:22,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:36:22,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:36:22,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:36:22,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:36:22,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:36:22,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:36:22,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:36:22,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:36:22,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:36:22,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:36:22,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:36:22,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:36:22,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:36:22,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:36:22,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:36:22,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:36:22,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:36:22,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:36:22,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:36:22,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:36:22,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:36:22,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:36:22,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:36:22,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-15 18:36:22,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfaa5e97/710f890fa49e4c589e03edb3048deb40/FLAGc8c2b1cc4 [2020-10-15 18:36:23,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:36:23,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-15 18:36:23,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfaa5e97/710f890fa49e4c589e03edb3048deb40/FLAGc8c2b1cc4 [2020-10-15 18:36:23,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfaa5e97/710f890fa49e4c589e03edb3048deb40 [2020-10-15 18:36:23,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:36:23,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:36:23,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:36:23,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:36:23,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:36:23,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:36:23" (1/1) ... [2020-10-15 18:36:23,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e00dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:23, skipping insertion in model container [2020-10-15 18:36:23,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:36:23" (1/1) ... [2020-10-15 18:36:23,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:36:23,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:36:24,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:36:24,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:36:24,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:36:24,377 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:36:24,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24 WrapperNode [2020-10-15 18:36:24,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:36:24,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:36:24,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:36:24,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:36:24,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:36:24,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:36:24,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:36:24,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:36:24,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... [2020-10-15 18:36:24,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:36:24,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:36:24,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:36:24,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:36:24,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:36:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:36:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:36:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:36:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:36:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:36:24,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:36:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:36:24,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:36:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:36:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:36:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:36:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:36:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:36:24,541 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:36:24,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:36:24,876 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:36:24,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:36:24 BoogieIcfgContainer [2020-10-15 18:36:24,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:36:24,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:36:24,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:36:24,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:36:24,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:36:23" (1/3) ... [2020-10-15 18:36:24,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d27de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:36:24, skipping insertion in model container [2020-10-15 18:36:24,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:36:24" (2/3) ... [2020-10-15 18:36:24,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d27de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:36:24, skipping insertion in model container [2020-10-15 18:36:24,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:36:24" (3/3) ... [2020-10-15 18:36:24,887 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-10-15 18:36:24,903 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:36:24,903 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:36:24,918 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:36:24,919 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:36:24,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,980 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,983 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,984 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:24,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,002 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,005 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,006 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:36:25,022 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:36:25,045 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:36:25,045 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:36:25,045 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:36:25,045 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:36:25,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:36:25,046 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:36:25,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:36:25,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:36:25,059 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:36:25,061 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:36:25,063 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:36:25,065 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 18:36:25,104 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 18:36:25,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:36:25,110 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:36:25,113 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:36:26,692 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-15 18:36:26,692 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 18:36:26,701 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:36:26,746 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:36:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:36:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:36:26,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:26,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:26,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-15 18:36:26,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:26,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252085960] [2020-10-15 18:36:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252085960] [2020-10-15 18:36:27,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:36:27,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977384310] [2020-10-15 18:36:27,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:36:27,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:36:27,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,041 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:36:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,094 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-15 18:36:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:36:27,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:36:27,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,116 INFO L225 Difference]: With dead ends: 294 [2020-10-15 18:36:27,116 INFO L226 Difference]: Without dead ends: 230 [2020-10-15 18:36:27,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-15 18:36:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-15 18:36:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-15 18:36:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-15 18:36:27,186 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-15 18:36:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,187 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-15 18:36:27,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:36:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-15 18:36:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:36:27,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:36:27,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-10-15 18:36:27,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344063900] [2020-10-15 18:36:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344063900] [2020-10-15 18:36:27,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:36:27,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458894871] [2020-10-15 18:36:27,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:36:27,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:36:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,280 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-15 18:36:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,301 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-10-15 18:36:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:36:27,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:36:27,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,305 INFO L225 Difference]: With dead ends: 344 [2020-10-15 18:36:27,305 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 18:36:27,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 18:36:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-10-15 18:36:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 18:36:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-10-15 18:36:27,330 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-10-15 18:36:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,330 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-10-15 18:36:27,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:36:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-10-15 18:36:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:36:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:36:27,332 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-15 18:36:27,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728962965] [2020-10-15 18:36:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728962965] [2020-10-15 18:36:27,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:36:27,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001176773] [2020-10-15 18:36:27,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:36:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:36:27,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,403 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-10-15 18:36:27,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,412 INFO L93 Difference]: Finished difference Result 194 states and 488 transitions. [2020-10-15 18:36:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:36:27,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:36:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,415 INFO L225 Difference]: With dead ends: 194 [2020-10-15 18:36:27,415 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 18:36:27,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 18:36:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-15 18:36:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 18:36:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-10-15 18:36:27,428 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 9 [2020-10-15 18:36:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,429 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-10-15 18:36:27,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:36:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-10-15 18:36:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:36:27,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:36:27,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-10-15 18:36:27,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32059713] [2020-10-15 18:36:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32059713] [2020-10-15 18:36:27,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:36:27,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249949769] [2020-10-15 18:36:27,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:36:27,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:36:27,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,474 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-10-15 18:36:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,481 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-10-15 18:36:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:36:27,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 18:36:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,483 INFO L225 Difference]: With dead ends: 158 [2020-10-15 18:36:27,483 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 18:36:27,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:36:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 18:36:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-15 18:36:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-15 18:36:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-10-15 18:36:27,497 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-10-15 18:36:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,498 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-10-15 18:36:27,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:36:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-10-15 18:36:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:36:27,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:36:27,500 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-10-15 18:36:27,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546357502] [2020-10-15 18:36:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546357502] [2020-10-15 18:36:27,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:36:27,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520957568] [2020-10-15 18:36:27,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:36:27,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:36:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:36:27,550 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-10-15 18:36:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,571 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-10-15 18:36:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:36:27,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 18:36:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,572 INFO L225 Difference]: With dead ends: 188 [2020-10-15 18:36:27,572 INFO L226 Difference]: Without dead ends: 110 [2020-10-15 18:36:27,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:36:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-15 18:36:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-15 18:36:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 18:36:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-10-15 18:36:27,579 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-10-15 18:36:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,580 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-10-15 18:36:27,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:36:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-10-15 18:36:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:36:27,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:36:27,582 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,582 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-10-15 18:36:27,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13113190] [2020-10-15 18:36:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13113190] [2020-10-15 18:36:27,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:36:27,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572970021] [2020-10-15 18:36:27,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:36:27,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:36:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:36:27,655 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-10-15 18:36:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,697 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-10-15 18:36:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:36:27,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:36:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,699 INFO L225 Difference]: With dead ends: 128 [2020-10-15 18:36:27,699 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 18:36:27,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:36:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 18:36:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 18:36:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 18:36:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-10-15 18:36:27,705 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-10-15 18:36:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,705 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-10-15 18:36:27,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:36:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-10-15 18:36:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:36:27,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:36:27,707 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-10-15 18:36:27,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826888352] [2020-10-15 18:36:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826888352] [2020-10-15 18:36:27,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:36:27,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960881368] [2020-10-15 18:36:27,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:36:27,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:36:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:36:27,757 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-10-15 18:36:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,797 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-10-15 18:36:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:36:27,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 18:36:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,798 INFO L225 Difference]: With dead ends: 99 [2020-10-15 18:36:27,799 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 18:36:27,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:36:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 18:36:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-15 18:36:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 18:36:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-10-15 18:36:27,803 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-10-15 18:36:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,803 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-10-15 18:36:27,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:36:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-10-15 18:36:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:36:27,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:36:27,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-10-15 18:36:27,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325398485] [2020-10-15 18:36:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325398485] [2020-10-15 18:36:27,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:36:27,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618662247] [2020-10-15 18:36:27,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:36:27,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:36:27,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:36:27,871 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-10-15 18:36:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:27,918 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-10-15 18:36:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:36:27,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:36:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:27,920 INFO L225 Difference]: With dead ends: 76 [2020-10-15 18:36:27,920 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 18:36:27,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:36:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 18:36:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 18:36:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 18:36:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-10-15 18:36:27,923 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-10-15 18:36:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:27,924 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-10-15 18:36:27,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:36:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-10-15 18:36:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:36:27,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:36:27,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:36:27,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:36:27,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:36:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:36:27,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-15 18:36:27,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:36:27,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193739555] [2020-10-15 18:36:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:36:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:36:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:36:27,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193739555] [2020-10-15 18:36:27,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:36:27,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:36:27,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971214945] [2020-10-15 18:36:27,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:36:27,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:36:27,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:36:27,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:36:27,988 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-10-15 18:36:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:36:28,006 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-10-15 18:36:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:36:28,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:36:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:36:28,007 INFO L225 Difference]: With dead ends: 68 [2020-10-15 18:36:28,007 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:36:28,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:36:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:36:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:36:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:36:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:36:28,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:36:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:36:28,009 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:36:28,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:36:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:36:28,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:36:28,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:36:28,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:36:28 BasicIcfg [2020-10-15 18:36:28,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:36:28,016 INFO L168 Benchmark]: Toolchain (without parser) took 4254.71 ms. Allocated memory was 252.2 MB in the beginning and 372.2 MB in the end (delta: 120.1 MB). Free memory was 204.2 MB in the beginning and 238.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,017 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:36:28,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.64 ms. Allocated memory was 252.2 MB in the beginning and 316.7 MB in the end (delta: 64.5 MB). Free memory was 204.2 MB in the beginning and 268.2 MB in the end (delta: -64.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.30 ms. Allocated memory is still 316.7 MB. Free memory was 268.2 MB in the beginning and 265.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,020 INFO L168 Benchmark]: Boogie Preprocessor took 27.49 ms. Allocated memory is still 316.7 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,021 INFO L168 Benchmark]: RCFGBuilder took 419.79 ms. Allocated memory is still 316.7 MB. Free memory was 263.2 MB in the beginning and 240.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,022 INFO L168 Benchmark]: TraceAbstraction took 3133.92 ms. Allocated memory was 316.7 MB in the beginning and 372.2 MB in the end (delta: 55.6 MB). Free memory was 240.7 MB in the beginning and 238.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 58.3 MB. Max. memory is 14.2 GB. [2020-10-15 18:36:28,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 615.64 ms. Allocated memory was 252.2 MB in the beginning and 316.7 MB in the end (delta: 64.5 MB). Free memory was 204.2 MB in the beginning and 268.2 MB in the end (delta: -64.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.30 ms. Allocated memory is still 316.7 MB. Free memory was 268.2 MB in the beginning and 265.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.49 ms. Allocated memory is still 316.7 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 419.79 ms. Allocated memory is still 316.7 MB. Free memory was 263.2 MB in the beginning and 240.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3133.92 ms. Allocated memory was 316.7 MB in the beginning and 372.2 MB in the end (delta: 55.6 MB). Free memory was 240.7 MB in the beginning and 238.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 58.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 883 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 165 SDtfs, 119 SDslu, 178 SDs, 0 SdLazy, 111 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...