/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:25:54,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:25:54,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:25:54,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:25:54,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:25:54,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:25:54,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:25:54,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:25:54,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:25:54,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:25:54,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:25:54,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:25:54,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:25:54,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:25:54,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:25:54,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:25:54,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:25:54,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:25:54,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:25:54,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:25:54,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:25:54,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:25:54,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:25:54,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:25:54,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:25:54,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:25:54,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:25:54,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:25:54,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:25:54,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:25:54,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:25:54,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:25:54,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:25:54,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:25:54,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:25:54,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:25:54,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 00:25:55,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:25:55,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:25:55,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:25:55,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:25:55,015 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:25:55,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:25:55,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:25:55,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:25:55,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:25:55,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:25:55,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:25:55,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:25:55,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:25:55,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:25:55,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:25:55,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:25:55,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:25:55,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:25:55,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:25:55,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:25:55,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:25:55,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:25:55,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:25:55,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:25:55,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:25:55,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:25:55,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:25:55,020 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:25:55,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:25:55,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:25:55,021 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:25:55,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:25:55,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:25:55,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:25:55,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:25:55,540 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:25:55,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-16 00:25:55,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d207d3b0/522ad5f2953046c6879ffde52453a7c5/FLAG8743ead3a [2020-09-16 00:25:56,241 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:25:56,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-16 00:25:56,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d207d3b0/522ad5f2953046c6879ffde52453a7c5/FLAG8743ead3a [2020-09-16 00:25:56,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d207d3b0/522ad5f2953046c6879ffde52453a7c5 [2020-09-16 00:25:56,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:25:56,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:25:56,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:25:56,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:25:56,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:25:56,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:25:56" (1/1) ... [2020-09-16 00:25:56,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52697317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:56, skipping insertion in model container [2020-09-16 00:25:56,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:25:56" (1/1) ... [2020-09-16 00:25:56,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:25:56,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:25:57,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:25:57,183 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:25:57,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:25:57,337 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:25:57,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57 WrapperNode [2020-09-16 00:25:57,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:25:57,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:25:57,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:25:57,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:25:57,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:25:57,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:25:57,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:25:57,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:25:57,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (1/1) ... [2020-09-16 00:25:57,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:25:57,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:25:57,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:25:57,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:25:57,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (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 [2020-09-16 00:25:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:25:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:25:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:25:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:25:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:25:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:25:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:25:57,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:25:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:25:57,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:25:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:25:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:25:57,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:25:57,553 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:25:57,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:25:57,919 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:25:57,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:25:57 BoogieIcfgContainer [2020-09-16 00:25:57,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:25:57,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:25:57,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:25:57,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:25:57,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:25:56" (1/3) ... [2020-09-16 00:25:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc05c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:25:57, skipping insertion in model container [2020-09-16 00:25:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:25:57" (2/3) ... [2020-09-16 00:25:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc05c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:25:57, skipping insertion in model container [2020-09-16 00:25:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:25:57" (3/3) ... [2020-09-16 00:25:57,936 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2020-09-16 00:25:57,948 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:25:57,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:25:57,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:25:57,961 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:25:57,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:57,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,008 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,008 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,015 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,016 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:25:58,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:25:58,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:25:58,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:25:58,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:25:58,076 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:25:58,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:25:58,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:25:58,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:25:58,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:25:58,097 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 00:25:58,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:25:58,157 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:25:58,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:25:58,165 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. [2020-09-16 00:25:58,171 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:25:58,215 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:25:58,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:25:58,222 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. [2020-09-16 00:25:58,224 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 00:25:58,226 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:25:59,655 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-16 00:25:59,796 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-16 00:25:59,869 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-16 00:25:59,869 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-16 00:25:59,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 00:25:59,901 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 00:25:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 00:25:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:25:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:25:59,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:25:59,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:25:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:25:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-16 00:25:59,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:25:59,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168885856] [2020-09-16 00:25:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:00,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168885856] [2020-09-16 00:26:00,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:00,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:26:00,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [885623171] [2020-09-16 00:26:00,221 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:00,225 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:00,240 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:26:00,240 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:00,242 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:00,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:26:00,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:00,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:26:00,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:26:00,265 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 00:26:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:00,310 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 00:26:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:26:00,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 00:26:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:00,332 INFO L225 Difference]: With dead ends: 282 [2020-09-16 00:26:00,332 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 00:26:00,334 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 [2020-09-16 00:26:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 00:26:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 00:26:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 00:26:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 00:26:00,415 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 00:26:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:00,416 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 00:26:00,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:26:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 00:26:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:26:00,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:00,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:00,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:26:00,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-16 00:26:00,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:00,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519177745] [2020-09-16 00:26:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:00,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519177745] [2020-09-16 00:26:00,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:00,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:26:00,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [733759005] [2020-09-16 00:26:00,501 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:00,502 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:00,504 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-16 00:26:00,504 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:00,538 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:00,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:26:00,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:00,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:26:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:26:00,541 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-16 00:26:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:00,561 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-16 00:26:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:26:00,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 00:26:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:00,564 INFO L225 Difference]: With dead ends: 202 [2020-09-16 00:26:00,564 INFO L226 Difference]: Without dead ends: 202 [2020-09-16 00:26:00,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:26:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-16 00:26:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-16 00:26:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-16 00:26:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-16 00:26:00,583 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-16 00:26:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:00,584 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-16 00:26:00,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:26:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-16 00:26:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:26:00,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:00,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:00,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:26:00,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-16 00:26:00,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:00,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583225361] [2020-09-16 00:26:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:00,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583225361] [2020-09-16 00:26:00,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:00,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:26:00,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [326274824] [2020-09-16 00:26:00,712 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:00,714 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:00,718 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-16 00:26:00,718 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:00,758 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:00,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:26:00,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:26:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:26:00,760 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-16 00:26:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:00,768 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-16 00:26:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:26:00,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 00:26:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:00,771 INFO L225 Difference]: With dead ends: 194 [2020-09-16 00:26:00,771 INFO L226 Difference]: Without dead ends: 194 [2020-09-16 00:26:00,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:26:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-16 00:26:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-16 00:26:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-16 00:26:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-16 00:26:00,785 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-16 00:26:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:00,785 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-16 00:26:00,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:26:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-16 00:26:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:26:00,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:00,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:00,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:26:00,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-16 00:26:00,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:00,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330826349] [2020-09-16 00:26:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:00,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330826349] [2020-09-16 00:26:00,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:00,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:26:00,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [677127514] [2020-09-16 00:26:00,874 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:00,876 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:00,896 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-16 00:26:00,896 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:00,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:26:00,956 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:26:00,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:26:00,997 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-16 00:26:00,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:26:00,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:00,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:26:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:26:00,998 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-09-16 00:26:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,064 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-16 00:26:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:26:01,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-16 00:26:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,066 INFO L225 Difference]: With dead ends: 187 [2020-09-16 00:26:01,066 INFO L226 Difference]: Without dead ends: 123 [2020-09-16 00:26:01,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:26:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-16 00:26:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-16 00:26:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-16 00:26:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-16 00:26:01,074 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-09-16 00:26:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,074 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-16 00:26:01,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:26:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-16 00:26:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:26:01,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:01,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:01,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:26:01,077 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-16 00:26:01,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370854314] [2020-09-16 00:26:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:01,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370854314] [2020-09-16 00:26:01,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:01,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:26:01,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1083483182] [2020-09-16 00:26:01,198 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:01,201 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:01,204 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-16 00:26:01,205 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:01,251 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3040#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:26:01,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 00:26:01,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:01,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 00:26:01,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:26:01,253 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 7 states. [2020-09-16 00:26:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,308 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-16 00:26:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:26:01,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-16 00:26:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,310 INFO L225 Difference]: With dead ends: 118 [2020-09-16 00:26:01,310 INFO L226 Difference]: Without dead ends: 108 [2020-09-16 00:26:01,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-16 00:26:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-16 00:26:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-16 00:26:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-16 00:26:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-16 00:26:01,316 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-16 00:26:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,316 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-16 00:26:01,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 00:26:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-16 00:26:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:26:01,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:01,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:01,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:26:01,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-16 00:26:01,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:01,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237142738] [2020-09-16 00:26:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:01,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237142738] [2020-09-16 00:26:01,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:01,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:26:01,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1267292551] [2020-09-16 00:26:01,413 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:01,415 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:01,422 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-09-16 00:26:01,422 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:01,554 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:01,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:26:01,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:01,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:26:01,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:26:01,555 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-16 00:26:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,571 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-16 00:26:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:26:01,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:26:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,572 INFO L225 Difference]: With dead ends: 133 [2020-09-16 00:26:01,573 INFO L226 Difference]: Without dead ends: 54 [2020-09-16 00:26:01,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:26:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-16 00:26:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-16 00:26:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-16 00:26:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-16 00:26:01,576 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-16 00:26:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,576 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-16 00:26:01,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:26:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-16 00:26:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:26:01,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:01,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:01,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:26:01,578 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-16 00:26:01,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:01,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731072581] [2020-09-16 00:26:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:01,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731072581] [2020-09-16 00:26:01,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:01,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:26:01,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1159369076] [2020-09-16 00:26:01,654 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:01,656 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:01,661 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-16 00:26:01,661 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:01,703 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:01,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:26:01,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:26:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:26:01,705 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-16 00:26:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,736 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-16 00:26:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:26:01,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:26:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,737 INFO L225 Difference]: With dead ends: 63 [2020-09-16 00:26:01,737 INFO L226 Difference]: Without dead ends: 38 [2020-09-16 00:26:01,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:26:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-16 00:26:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-16 00:26:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-16 00:26:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-16 00:26:01,740 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-16 00:26:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,741 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-16 00:26:01,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:26:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-16 00:26:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:26:01,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:01,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:01,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:26:01,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-16 00:26:01,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:01,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417218861] [2020-09-16 00:26:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:01,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417218861] [2020-09-16 00:26:01,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:01,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:26:01,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [699057496] [2020-09-16 00:26:01,804 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:01,806 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:01,809 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-16 00:26:01,809 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:01,818 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:01,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:26:01,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:01,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:26:01,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:26:01,819 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-16 00:26:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,839 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-16 00:26:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:26:01,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:26:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,840 INFO L225 Difference]: With dead ends: 56 [2020-09-16 00:26:01,841 INFO L226 Difference]: Without dead ends: 35 [2020-09-16 00:26:01,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:26:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-16 00:26:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-16 00:26:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-16 00:26:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-16 00:26:01,843 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-16 00:26:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,843 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-16 00:26:01,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:26:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-16 00:26:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:26:01,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:26:01,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:26:01,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:26:01,845 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:26:01,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:26:01,845 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-16 00:26:01,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:26:01,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712858802] [2020-09-16 00:26:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:26:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:26:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:26:01,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712858802] [2020-09-16 00:26:01,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:26:01,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:26:01,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1134969946] [2020-09-16 00:26:01,926 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:26:01,928 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:26:01,932 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-16 00:26:01,932 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:26:01,937 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:26:01,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:26:01,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:26:01,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:26:01,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:26:01,939 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-16 00:26:01,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:26:01,957 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-16 00:26:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:26:01,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:26:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:26:01,958 INFO L225 Difference]: With dead ends: 34 [2020-09-16 00:26:01,959 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:26:01,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:26:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:26:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:26:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:26:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:26:01,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 00:26:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:26:01,960 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:26:01,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:26:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:26:01,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:26:01,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 00:26:01,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:26:01 BasicIcfg [2020-09-16 00:26:01,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:26:01,969 INFO L168 Benchmark]: Toolchain (without parser) took 5467.68 ms. Allocated memory was 142.6 MB in the beginning and 274.2 MB in the end (delta: 131.6 MB). Free memory was 104.7 MB in the beginning and 229.8 MB in the end (delta: -125.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-09-16 00:26:01,970 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:26:01,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.05 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 104.0 MB in the beginning and 160.7 MB in the end (delta: -56.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-16 00:26:01,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.41 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-16 00:26:01,973 INFO L168 Benchmark]: Boogie Preprocessor took 56.72 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:26:01,974 INFO L168 Benchmark]: RCFGBuilder took 466.20 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 134.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-16 00:26:01,975 INFO L168 Benchmark]: TraceAbstraction took 4039.80 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 134.3 MB in the beginning and 232.3 MB in the end (delta: -98.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:26:01,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 832.05 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 104.0 MB in the beginning and 160.7 MB in the end (delta: -56.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.41 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.72 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.20 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 134.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4039.80 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 134.3 MB in the beginning and 232.3 MB in the end (delta: -98.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 186 SDtfs, 121 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 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...