/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:39:25,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:39:25,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:39:25,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:39:25,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:39:25,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:39:25,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:39:25,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:39:25,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:39:25,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:39:25,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:39:25,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:39:25,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:39:25,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:39:25,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:39:25,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:39:25,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:39:25,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:39:25,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:39:25,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:39:25,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:39:25,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:39:25,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:39:25,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:39:26,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:39:26,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:39:26,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:39:26,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:39:26,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:39:26,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:39:26,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:39:26,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:39:26,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:39:26,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:39:26,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:39:26,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:39:26,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:39:26,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:39:26,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:39:26,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:39:26,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:39:26,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:39:26,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:39:26,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:39:26,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:39:26,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:39:26,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:39:26,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:39:26,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:39:26,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:39:26,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:39:26,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:39:26,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:39:26,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:39:26,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:39:26,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:39:26,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:39:26,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:39:26,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:39:26,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:39:26,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:39:26,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:39:26,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:39:26,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:39:26,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:39:26,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:39:26,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:39:26,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:39:26,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:39:26,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:39:26,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:39:26,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-05 23:39:26,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5721a798/c0eedb3361f34e10a521b82e924e5490/FLAG14c3ac1f2 [2020-10-05 23:39:27,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:39:27,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-05 23:39:27,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5721a798/c0eedb3361f34e10a521b82e924e5490/FLAG14c3ac1f2 [2020-10-05 23:39:27,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5721a798/c0eedb3361f34e10a521b82e924e5490 [2020-10-05 23:39:27,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:39:27,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:39:27,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:39:27,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:39:27,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:39:27,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:39:27" (1/1) ... [2020-10-05 23:39:27,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c7e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:27, skipping insertion in model container [2020-10-05 23:39:27,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:39:27" (1/1) ... [2020-10-05 23:39:27,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:39:27,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:39:27,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:39:27,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:39:28,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:39:28,114 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:39:28,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28 WrapperNode [2020-10-05 23:39:28,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:39:28,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:39:28,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:39:28,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:39:28,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:39:28,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:39:28,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:39:28,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:39:28,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... [2020-10-05 23:39:28,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:39:28,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:39:28,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:39:28,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:39:28,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:39:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 23:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 23:39:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 23:39:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 23:39:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 23:39:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 23:39:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 23:39:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 23:39:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:39:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:39:28,257 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:39:28,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:39:28,638 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 23:39:28,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:39:28 BoogieIcfgContainer [2020-10-05 23:39:28,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:39:28,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:39:28,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:39:28,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:39:28,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:39:27" (1/3) ... [2020-10-05 23:39:28,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293f42ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:39:28, skipping insertion in model container [2020-10-05 23:39:28,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:39:28" (2/3) ... [2020-10-05 23:39:28,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293f42ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:39:28, skipping insertion in model container [2020-10-05 23:39:28,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:39:28" (3/3) ... [2020-10-05 23:39:28,650 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-05 23:39:28,660 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:39:28,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:39:28,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:39:28,669 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:39:28,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,737 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:39:28,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:39:28,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:39:28,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:39:28,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:39:28,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:39:28,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:39:28,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:39:28,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:39:28,773 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:39:28,787 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-05 23:39:28,789 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-05 23:39:28,837 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-05 23:39:28,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:39:28,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 23:39:28,845 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-05 23:39:28,865 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-05 23:39:28,865 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:39:28,866 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 23:39:28,868 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 23:39:28,869 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:39:30,043 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-05 23:39:30,137 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-10-05 23:39:30,138 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-10-05 23:39:30,141 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-05 23:39:30,169 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-05 23:39:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-05 23:39:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:39:30,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:30,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:30,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:30,187 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-10-05 23:39:30,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:30,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114838471] [2020-10-05 23:39:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:30,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114838471] [2020-10-05 23:39:30,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:30,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:39:30,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352511383] [2020-10-05 23:39:30,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 23:39:30,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:30,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 23:39:30,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:39:30,398 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-05 23:39:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:30,431 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-05 23:39:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 23:39:30,433 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-05 23:39:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:30,451 INFO L225 Difference]: With dead ends: 362 [2020-10-05 23:39:30,451 INFO L226 Difference]: Without dead ends: 298 [2020-10-05 23:39:30,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:39:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-05 23:39:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-05 23:39:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-05 23:39:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-05 23:39:30,529 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-05 23:39:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:30,530 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-05 23:39:30,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 23:39:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-05 23:39:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:39:30,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:30,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:30,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:39:30,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-10-05 23:39:30,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:30,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267677563] [2020-10-05 23:39:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:30,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267677563] [2020-10-05 23:39:30,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:30,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:39:30,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50601590] [2020-10-05 23:39:30,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:39:30,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:39:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:39:30,703 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-05 23:39:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:30,754 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-05 23:39:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:39:30,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 23:39:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:30,760 INFO L225 Difference]: With dead ends: 330 [2020-10-05 23:39:30,760 INFO L226 Difference]: Without dead ends: 266 [2020-10-05 23:39:30,763 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 [2020-10-05 23:39:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-05 23:39:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-05 23:39:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 23:39:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-05 23:39:30,807 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-05 23:39:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:30,808 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-05 23:39:30,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:39:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-05 23:39:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:39:30,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:30,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:30,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:39:30,814 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-10-05 23:39:30,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:30,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041639255] [2020-10-05 23:39:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:30,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041639255] [2020-10-05 23:39:30,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:30,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:39:30,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019135606] [2020-10-05 23:39:30,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:39:30,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:30,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:39:30,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:39:30,939 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-05 23:39:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,003 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-05 23:39:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:39:31,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-05 23:39:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,006 INFO L225 Difference]: With dead ends: 290 [2020-10-05 23:39:31,006 INFO L226 Difference]: Without dead ends: 242 [2020-10-05 23:39:31,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:39:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-05 23:39:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-05 23:39:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-05 23:39:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-05 23:39:31,021 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-05 23:39:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,021 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-05 23:39:31,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:39:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-05 23:39:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:39:31,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:39:31,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-10-05 23:39:31,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732797266] [2020-10-05 23:39:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732797266] [2020-10-05 23:39:31,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:39:31,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740056621] [2020-10-05 23:39:31,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:39:31,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:39:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:39:31,089 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-05 23:39:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,138 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-10-05 23:39:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:39:31,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-05 23:39:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,140 INFO L225 Difference]: With dead ends: 302 [2020-10-05 23:39:31,140 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 23:39:31,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:39:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 23:39:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-05 23:39:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:39:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-10-05 23:39:31,147 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-10-05 23:39:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,148 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-10-05 23:39:31,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:39:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-10-05 23:39:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:39:31,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:39:31,150 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,150 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-10-05 23:39:31,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752015091] [2020-10-05 23:39:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752015091] [2020-10-05 23:39:31,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:39:31,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132422184] [2020-10-05 23:39:31,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:39:31,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:39:31,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:39:31,207 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-10-05 23:39:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,252 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-05 23:39:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:39:31,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-05 23:39:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,254 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:39:31,254 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 23:39:31,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:39:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 23:39:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-05 23:39:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-05 23:39:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-05 23:39:31,258 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-10-05 23:39:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,258 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-05 23:39:31,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:39:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-05 23:39:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:39:31,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:39:31,260 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-10-05 23:39:31,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955780920] [2020-10-05 23:39:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955780920] [2020-10-05 23:39:31,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:39:31,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214336820] [2020-10-05 23:39:31,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:39:31,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:39:31,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:39:31,324 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-05 23:39:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,355 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-05 23:39:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:39:31,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 23:39:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,357 INFO L225 Difference]: With dead ends: 91 [2020-10-05 23:39:31,357 INFO L226 Difference]: Without dead ends: 69 [2020-10-05 23:39:31,358 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 [2020-10-05 23:39:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-05 23:39:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-05 23:39:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-05 23:39:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-05 23:39:31,362 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-05 23:39:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,362 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-05 23:39:31,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:39:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-05 23:39:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:39:31,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:39:31,364 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-10-05 23:39:31,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642664870] [2020-10-05 23:39:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642664870] [2020-10-05 23:39:31,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:39:31,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561743129] [2020-10-05 23:39:31,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:39:31,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:39:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:39:31,457 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-10-05 23:39:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,508 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-05 23:39:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:39:31,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 23:39:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,510 INFO L225 Difference]: With dead ends: 65 [2020-10-05 23:39:31,510 INFO L226 Difference]: Without dead ends: 50 [2020-10-05 23:39:31,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:39:31,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-05 23:39:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-05 23:39:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-05 23:39:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-05 23:39:31,513 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-05 23:39:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,513 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-05 23:39:31,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:39:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-05 23:39:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:39:31,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:39:31,515 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-10-05 23:39:31,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757139823] [2020-10-05 23:39:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757139823] [2020-10-05 23:39:31,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 23:39:31,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667688253] [2020-10-05 23:39:31,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:39:31,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:39:31,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:39:31,584 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-10-05 23:39:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,626 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-05 23:39:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:39:31,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:39:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,627 INFO L225 Difference]: With dead ends: 43 [2020-10-05 23:39:31,627 INFO L226 Difference]: Without dead ends: 37 [2020-10-05 23:39:31,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:39:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-05 23:39:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-05 23:39:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-05 23:39:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-05 23:39:31,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-05 23:39:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,630 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-05 23:39:31,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:39:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-05 23:39:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:39:31,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:39:31,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:39:31,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:39:31,631 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:39:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:39:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-10-05 23:39:31,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:39:31,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256557234] [2020-10-05 23:39:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:39:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:39:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:39:31,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256557234] [2020-10-05 23:39:31,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:39:31,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:39:31,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446096098] [2020-10-05 23:39:31,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:39:31,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:39:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:39:31,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:39:31,690 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-05 23:39:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:39:31,714 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-05 23:39:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:39:31,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 23:39:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:39:31,715 INFO L225 Difference]: With dead ends: 36 [2020-10-05 23:39:31,715 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:39:31,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:39:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:39:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:39:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:39:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:39:31,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-05 23:39:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:39:31,717 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:39:31,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:39:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:39:31,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:39:31,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:39:31,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:39:31 BasicIcfg [2020-10-05 23:39:31,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:39:31,724 INFO L168 Benchmark]: Toolchain (without parser) took 4273.21 ms. Allocated memory was 147.8 MB in the beginning and 247.5 MB in the end (delta: 99.6 MB). Free memory was 102.7 MB in the beginning and 174.7 MB in the end (delta: -72.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,725 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.55 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 160.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.56 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,727 INFO L168 Benchmark]: Boogie Preprocessor took 27.37 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,728 INFO L168 Benchmark]: RCFGBuilder took 448.65 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,728 INFO L168 Benchmark]: TraceAbstraction took 3079.68 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 134.1 MB in the beginning and 174.7 MB in the end (delta: -40.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:39:31,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.55 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 160.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.56 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.37 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.65 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3079.68 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 134.1 MB in the beginning and 174.7 MB in the end (delta: -40.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 678 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 183 SDtfs, 209 SDslu, 286 SDs, 0 SdLazy, 131 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4323 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...