/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:29:13,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:29:13,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:29:13,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:29:13,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:29:13,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:29:13,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:29:13,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:29:13,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:29:13,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:29:13,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:29:13,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:29:13,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:29:13,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:29:13,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:29:13,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:29:13,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:29:13,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:29:13,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:29:13,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:29:13,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:29:13,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:29:13,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:29:13,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:29:13,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 15:29:13,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:29:13,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:29:13,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:29:13,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:29:13,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:29:13,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:29:13,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:29:13,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:29:13,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:29:13,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:29:13,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:29:13,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:29:13,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:29:13,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:29:13,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:29:13,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:29:13,474 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:29:13,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:29:13,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:29:13,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:29:13,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:29:13,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:29:13,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:29:13,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:29:13,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:29:13,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:29:13,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:29:13,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:29:13,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:29:13,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:29:13,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:29:13,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:29:13,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:29:13,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:29:13,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:29:13,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:29:13,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:29:13,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:29:13,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:29:13,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:29:13,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:29:13,963 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:29:13,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-09-11 15:29:14,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd09b2b82/96796bf1f23249f09317c974ca9ddf43/FLAG371e05cba [2020-09-11 15:29:14,704 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:29:14,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-09-11 15:29:14,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd09b2b82/96796bf1f23249f09317c974ca9ddf43/FLAG371e05cba [2020-09-11 15:29:14,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd09b2b82/96796bf1f23249f09317c974ca9ddf43 [2020-09-11 15:29:14,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:29:14,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:29:14,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:14,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:29:14,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:29:14,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:14" (1/1) ... [2020-09-11 15:29:14,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:14, skipping insertion in model container [2020-09-11 15:29:14,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:14" (1/1) ... [2020-09-11 15:29:14,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:29:15,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:29:15,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:15,638 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:29:15,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:15,798 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:29:15,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15 WrapperNode [2020-09-11 15:29:15,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:15,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:15,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:29:15,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:29:15,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:15,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:29:15,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:29:15,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:29:15,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... [2020-09-11 15:29:15,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:29:15,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:29:15,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:29:15,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:29:15,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:29:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:29:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:29:15,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:29:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:29:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:29:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:29:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:29:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 15:29:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 15:29:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:29:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:29:15,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:29:15,981 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:29:16,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:29:16,390 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:29:16,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:16 BoogieIcfgContainer [2020-09-11 15:29:16,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:29:16,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:29:16,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:29:16,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:29:16,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:29:14" (1/3) ... [2020-09-11 15:29:16,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3d8c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:16, skipping insertion in model container [2020-09-11 15:29:16,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:15" (2/3) ... [2020-09-11 15:29:16,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3d8c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:16, skipping insertion in model container [2020-09-11 15:29:16,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:16" (3/3) ... [2020-09-11 15:29:16,410 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-09-11 15:29:16,422 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:29:16,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:29:16,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:29:16,433 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:29:16,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,468 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,468 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,471 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,472 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,472 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,472 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,473 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,473 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,477 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,478 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,478 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,478 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:16,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:29:16,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:29:16,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:29:16,552 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:29:16,552 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:29:16,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:29:16,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:29:16,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:29:16,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:29:16,573 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:16,576 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:16,631 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-11 15:29:16,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:16,638 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:29:16,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:16,667 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-11 15:29:16,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:16,668 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:29:16,670 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 15:29:16,672 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:29:18,608 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-11 15:29:18,877 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-09-11 15:29:18,877 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-09-11 15:29:18,883 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-09-11 15:29:18,939 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-09-11 15:29:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-09-11 15:29:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:29:18,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:18,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:18,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:18,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-09-11 15:29:18,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:18,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027637892] [2020-09-11 15:29:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:19,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027637892] [2020-09-11 15:29:19,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:19,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:19,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740134284] [2020-09-11 15:29:19,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:19,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:19,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:19,311 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-09-11 15:29:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:19,378 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-09-11 15:29:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 15:29:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:19,410 INFO L225 Difference]: With dead ends: 670 [2020-09-11 15:29:19,410 INFO L226 Difference]: Without dead ends: 526 [2020-09-11 15:29:19,412 INFO L675 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 [2020-09-11 15:29:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-11 15:29:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-09-11 15:29:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-09-11 15:29:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-09-11 15:29:19,523 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-09-11 15:29:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:19,524 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-09-11 15:29:19,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-09-11 15:29:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:29:19,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:19,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:19,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:29:19,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-09-11 15:29:19,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:19,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161636949] [2020-09-11 15:29:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:19,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161636949] [2020-09-11 15:29:19,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:19,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:19,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500650275] [2020-09-11 15:29:19,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:19,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:19,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:19,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:19,659 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-09-11 15:29:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:19,701 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-09-11 15:29:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:19,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:29:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:19,706 INFO L225 Difference]: With dead ends: 682 [2020-09-11 15:29:19,706 INFO L226 Difference]: Without dead ends: 394 [2020-09-11 15:29:19,707 INFO L675 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 [2020-09-11 15:29:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-11 15:29:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-11 15:29:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-11 15:29:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-09-11 15:29:19,727 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-09-11 15:29:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:19,728 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-09-11 15:29:19,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-09-11 15:29:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:29:19,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:19,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:19,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:29:19,731 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:19,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:19,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-09-11 15:29:19,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:19,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136462827] [2020-09-11 15:29:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:19,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136462827] [2020-09-11 15:29:19,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:19,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:19,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97946412] [2020-09-11 15:29:19,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:19,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:19,814 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-09-11 15:29:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:19,843 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-09-11 15:29:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:19,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 15:29:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:19,847 INFO L225 Difference]: With dead ends: 386 [2020-09-11 15:29:19,847 INFO L226 Difference]: Without dead ends: 386 [2020-09-11 15:29:19,848 INFO L675 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 [2020-09-11 15:29:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-11 15:29:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-09-11 15:29:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-11 15:29:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-09-11 15:29:19,861 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-09-11 15:29:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:19,861 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-09-11 15:29:19,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-09-11 15:29:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:29:19,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:19,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:19,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:29:19,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-09-11 15:29:19,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:19,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801381062] [2020-09-11 15:29:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:19,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801381062] [2020-09-11 15:29:19,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:19,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:19,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437871808] [2020-09-11 15:29:19,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:19,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:19,918 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-09-11 15:29:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:19,933 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-09-11 15:29:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:19,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 15:29:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:19,937 INFO L225 Difference]: With dead ends: 466 [2020-09-11 15:29:19,937 INFO L226 Difference]: Without dead ends: 402 [2020-09-11 15:29:19,937 INFO L675 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 [2020-09-11 15:29:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-11 15:29:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-09-11 15:29:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-09-11 15:29:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-09-11 15:29:19,950 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-09-11 15:29:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:19,950 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-09-11 15:29:19,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-09-11 15:29:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:29:19,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:19,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:19,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:29:19,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:19,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-09-11 15:29:19,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:19,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802001820] [2020-09-11 15:29:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802001820] [2020-09-11 15:29:20,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:20,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252048984] [2020-09-11 15:29:20,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:20,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:20,039 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-09-11 15:29:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,051 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-09-11 15:29:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:20,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 15:29:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,054 INFO L225 Difference]: With dead ends: 358 [2020-09-11 15:29:20,054 INFO L226 Difference]: Without dead ends: 358 [2020-09-11 15:29:20,055 INFO L675 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 [2020-09-11 15:29:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-11 15:29:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-11 15:29:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-11 15:29:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-09-11 15:29:20,066 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-09-11 15:29:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,066 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-09-11 15:29:20,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-09-11 15:29:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:29:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:29:20,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-09-11 15:29:20,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-11 15:29:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-11 15:29:20,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:20,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478601368] [2020-09-11 15:29:20,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:20,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:20,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:20,133 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-09-11 15:29:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,156 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-09-11 15:29:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:20,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:29:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,158 INFO L225 Difference]: With dead ends: 514 [2020-09-11 15:29:20,159 INFO L226 Difference]: Without dead ends: 274 [2020-09-11 15:29:20,159 INFO L675 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 [2020-09-11 15:29:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-11 15:29:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-09-11 15:29:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-11 15:29:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-09-11 15:29:20,167 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-09-11 15:29:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,168 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-09-11 15:29:20,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:20,168 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-09-11 15:29:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:29:20,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:29:20,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-09-11 15:29:20,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777885733] [2020-09-11 15:29:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777885733] [2020-09-11 15:29:20,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:20,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484780040] [2020-09-11 15:29:20,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:20,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:20,267 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-09-11 15:29:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,322 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-09-11 15:29:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:20,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:29:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,325 INFO L225 Difference]: With dead ends: 345 [2020-09-11 15:29:20,325 INFO L226 Difference]: Without dead ends: 252 [2020-09-11 15:29:20,326 INFO L675 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 [2020-09-11 15:29:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-11 15:29:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-09-11 15:29:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-11 15:29:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-09-11 15:29:20,333 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-09-11 15:29:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,334 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-09-11 15:29:20,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-09-11 15:29:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:29:20,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:29:20,336 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-09-11 15:29:20,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492111775] [2020-09-11 15:29:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492111775] [2020-09-11 15:29:20,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:20,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821457667] [2020-09-11 15:29:20,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:29:20,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:29:20,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:20,482 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-09-11 15:29:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,533 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-09-11 15:29:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:29:20,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:29:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,535 INFO L225 Difference]: With dead ends: 278 [2020-09-11 15:29:20,536 INFO L226 Difference]: Without dead ends: 203 [2020-09-11 15:29:20,536 INFO L675 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 [2020-09-11 15:29:20,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-11 15:29:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-11 15:29:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-11 15:29:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-09-11 15:29:20,542 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-09-11 15:29:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,543 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-09-11 15:29:20,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:29:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-09-11 15:29:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:29:20,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:29:20,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,545 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-09-11 15:29:20,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421254818] [2020-09-11 15:29:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421254818] [2020-09-11 15:29:20,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:29:20,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666909402] [2020-09-11 15:29:20,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:29:20,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:29:20,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:29:20,635 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-09-11 15:29:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,694 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-09-11 15:29:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:29:20,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-11 15:29:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,696 INFO L225 Difference]: With dead ends: 200 [2020-09-11 15:29:20,696 INFO L226 Difference]: Without dead ends: 162 [2020-09-11 15:29:20,697 INFO L675 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 [2020-09-11 15:29:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-11 15:29:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-11 15:29:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-11 15:29:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-09-11 15:29:20,701 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-09-11 15:29:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,702 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-09-11 15:29:20,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:29:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-09-11 15:29:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:29:20,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:29:20,703 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-09-11 15:29:20,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774854861] [2020-09-11 15:29:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774854861] [2020-09-11 15:29:20,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:20,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470958663] [2020-09-11 15:29:20,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:20,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:20,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:20,761 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-09-11 15:29:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,779 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-09-11 15:29:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:20,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-11 15:29:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,781 INFO L225 Difference]: With dead ends: 194 [2020-09-11 15:29:20,781 INFO L226 Difference]: Without dead ends: 127 [2020-09-11 15:29:20,781 INFO L675 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 [2020-09-11 15:29:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-11 15:29:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-09-11 15:29:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-11 15:29:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-09-11 15:29:20,785 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-09-11 15:29:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,786 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-09-11 15:29:20,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-09-11 15:29:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:29:20,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:29:20,787 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-09-11 15:29:20,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275561130] [2020-09-11 15:29:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:20,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275561130] [2020-09-11 15:29:20,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:20,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:29:20,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429359889] [2020-09-11 15:29:20,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:29:20,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:29:20,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:29:20,891 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-09-11 15:29:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:20,967 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-09-11 15:29:20,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:29:20,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-11 15:29:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:20,968 INFO L225 Difference]: With dead ends: 120 [2020-09-11 15:29:20,969 INFO L226 Difference]: Without dead ends: 71 [2020-09-11 15:29:20,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:29:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-11 15:29:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-11 15:29:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-11 15:29:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-09-11 15:29:20,972 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-09-11 15:29:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:20,973 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-09-11 15:29:20,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:29:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-09-11 15:29:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-11 15:29:20,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:20,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:20,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 15:29:20,974 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:20,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-09-11 15:29:20,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:20,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310317862] [2020-09-11 15:29:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:21,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310317862] [2020-09-11 15:29:21,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:21,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:21,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585746211] [2020-09-11 15:29:21,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:21,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:21,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:21,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:21,038 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-09-11 15:29:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:21,050 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-09-11 15:29:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:21,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-11 15:29:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:21,051 INFO L225 Difference]: With dead ends: 70 [2020-09-11 15:29:21,051 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:29:21,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:29:21,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:29:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:29:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:29:21,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-11 15:29:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:21,053 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:29:21,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:29:21,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:29:21,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 15:29:21,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:29:21 BasicIcfg [2020-09-11 15:29:21,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:29:21,061 INFO L168 Benchmark]: Toolchain (without parser) took 6101.82 ms. Allocated memory was 140.0 MB in the beginning and 282.1 MB in the end (delta: 142.1 MB). Free memory was 101.7 MB in the beginning and 143.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,062 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:29:21,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.11 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 161.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.76 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,064 INFO L168 Benchmark]: Boogie Preprocessor took 31.50 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,065 INFO L168 Benchmark]: RCFGBuilder took 513.86 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 133.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,066 INFO L168 Benchmark]: TraceAbstraction took 4658.14 ms. Allocated memory was 203.9 MB in the beginning and 282.1 MB in the end (delta: 78.1 MB). Free memory was 133.1 MB in the beginning and 143.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:21,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 834.11 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 161.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.76 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.50 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.86 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 133.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4658.14 ms. Allocated memory was 203.9 MB in the beginning and 282.1 MB in the end (delta: 78.1 MB). Free memory was 133.1 MB in the beginning and 143.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...