/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/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:03:53,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:03:53,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:03:53,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:03:53,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:03:53,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:03:53,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:03:53,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:03:53,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:03:53,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:03:53,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:03:53,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:03:53,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:03:53,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:03:53,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:03:53,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:03:53,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:03:53,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:03:53,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:03:53,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:03:53,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:03:53,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:03:53,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:03:53,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:03:53,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:03:54,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:03:54,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:03:54,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:03:54,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:03:54,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:03:54,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:03:54,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:03:54,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:03:54,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:03:54,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:03:54,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:03:54,016 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-McrAutomaton-WP.epf [2020-10-06 01:03:54,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:03:54,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:03:54,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:03:54,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:03:54,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:03:54,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:03:54,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:03:54,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:03:54,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:03:54,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:03:54,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:03:54,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:03:54,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:03:54,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:03:54,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:03:54,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:03:54,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:03:54,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:03:54,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:03:54,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:03:54,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:03:54,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:54,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:03:54,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:03:54,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:03:54,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:03:54,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:03:54,062 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:03:54,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:03:54,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:03:54,063 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:03:54,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:03:54,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:03:54,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:03:54,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:03:54,378 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:03:54,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-06 01:03:54,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f22dbbf/92e1ca59f9fd49099734478044a339fe/FLAG485de6078 [2020-10-06 01:03:55,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:03:55,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-06 01:03:55,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f22dbbf/92e1ca59f9fd49099734478044a339fe/FLAG485de6078 [2020-10-06 01:03:55,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f22dbbf/92e1ca59f9fd49099734478044a339fe [2020-10-06 01:03:55,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:03:55,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:03:55,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:55,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:03:55,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:03:55,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:55,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae5a2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55, skipping insertion in model container [2020-10-06 01:03:55,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:55,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:03:55,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:03:55,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:55,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:03:55,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:55,986 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:03:55,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55 WrapperNode [2020-10-06 01:03:55,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:55,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:55,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:03:55,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:03:55,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:56,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:03:56,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:03:56,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:03:56,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (1/1) ... [2020-10-06 01:03:56,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:03:56,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:03:56,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:03:56,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:03:56,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (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 [2020-10-06 01:03:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:03:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:03:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:03:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:03:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:03:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:03:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:03:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:03:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:03:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:03:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:03:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:03:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:03:56,131 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:03:56,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:03:56,526 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:03:56,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:56 BoogieIcfgContainer [2020-10-06 01:03:56,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:03:56,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:03:56,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:03:56,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:03:56,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:03:55" (1/3) ... [2020-10-06 01:03:56,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d332d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:56, skipping insertion in model container [2020-10-06 01:03:56,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:55" (2/3) ... [2020-10-06 01:03:56,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d332d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:56, skipping insertion in model container [2020-10-06 01:03:56,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:56" (3/3) ... [2020-10-06 01:03:56,537 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-10-06 01:03:56,548 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:03:56,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:03:56,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:03:56,558 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:03:56,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,588 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,607 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,610 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:56,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:03:56,646 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:03:56,647 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:03:56,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:03:56,647 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:03:56,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:03:56,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:03:56,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:03:56,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:03:56,662 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-06 01:03:56,664 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:03:56,707 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:03:56,707 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:56,712 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:56,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 01:03:56,737 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 01:03:56,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:56,738 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:56,740 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:03:56,741 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:03:58,084 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-10-06 01:03:58,084 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-06 01:03:58,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:03:58,127 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:03:58,130 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:03:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:03:58,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:58,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:58,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-10-06 01:03:58,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:58,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285007519] [2020-10-06 01:03:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:58,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285007519] [2020-10-06 01:03:58,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:58,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:58,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1498408344] [2020-10-06 01:03:58,411 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:58,414 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:58,428 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:03:58,429 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:58,433 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:58,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:58,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:58,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:58,451 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:03:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:58,497 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-06 01:03:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:58,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:03:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:58,514 INFO L225 Difference]: With dead ends: 282 [2020-10-06 01:03:58,514 INFO L226 Difference]: Without dead ends: 218 [2020-10-06 01:03:58,516 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 [2020-10-06 01:03:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-06 01:03:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-06 01:03:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-06 01:03:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-06 01:03:58,584 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-06 01:03:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:58,586 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-06 01:03:58,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-06 01:03:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:03:58,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:58,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:58,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:03:58,588 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:58,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-10-06 01:03:58,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:58,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462658551] [2020-10-06 01:03:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:58,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462658551] [2020-10-06 01:03:58,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:58,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:58,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1206207770] [2020-10-06 01:03:58,661 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:58,662 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:58,667 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-06 01:03:58,667 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:58,687 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:58,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:58,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:58,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:58,689 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-06 01:03:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:58,711 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-06 01:03:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:58,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:03:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:58,714 INFO L225 Difference]: With dead ends: 202 [2020-10-06 01:03:58,715 INFO L226 Difference]: Without dead ends: 202 [2020-10-06 01:03:58,715 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 [2020-10-06 01:03:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-06 01:03:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-06 01:03:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-06 01:03:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-06 01:03:58,733 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-06 01:03:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:58,734 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-06 01:03:58,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-06 01:03:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:03:58,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:58,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:58,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:03:58,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:58,736 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-10-06 01:03:58,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:58,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746679632] [2020-10-06 01:03:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:58,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746679632] [2020-10-06 01:03:58,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:58,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:58,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2022451420] [2020-10-06 01:03:58,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:58,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:58,794 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-06 01:03:58,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:58,820 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:58,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:58,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:58,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:58,822 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-06 01:03:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:58,831 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-06 01:03:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:58,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-06 01:03:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:58,834 INFO L225 Difference]: With dead ends: 198 [2020-10-06 01:03:58,834 INFO L226 Difference]: Without dead ends: 198 [2020-10-06 01:03:58,834 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 [2020-10-06 01:03:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-06 01:03:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-06 01:03:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-06 01:03:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-06 01:03:58,849 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-06 01:03:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:58,849 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-06 01:03:58,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-06 01:03:58,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:03:58,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:58,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:58,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:03:58,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:58,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:58,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-10-06 01:03:58,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:58,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383203509] [2020-10-06 01:03:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:58,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383203509] [2020-10-06 01:03:58,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:58,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:58,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [289455513] [2020-10-06 01:03:58,905 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:58,906 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:58,908 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-10-06 01:03:58,908 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:58,999 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:59,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:59,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:59,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:59,001 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-06 01:03:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:59,007 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-06 01:03:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:59,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 01:03:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:59,010 INFO L225 Difference]: With dead ends: 192 [2020-10-06 01:03:59,010 INFO L226 Difference]: Without dead ends: 192 [2020-10-06 01:03:59,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-06 01:03:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-06 01:03:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-06 01:03:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-06 01:03:59,025 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-06 01:03:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:59,026 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-06 01:03:59,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-06 01:03:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:03:59,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:59,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:59,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:03:59,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-10-06 01:03:59,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:59,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225073381] [2020-10-06 01:03:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:59,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225073381] [2020-10-06 01:03:59,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:59,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:59,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1722545425] [2020-10-06 01:03:59,081 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:59,082 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:59,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-06 01:03:59,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:59,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,150 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,169 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,209 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,255 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:59,267 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:59,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:59,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:59,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:59,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:59,268 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-10-06 01:03:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:59,299 INFO L93 Difference]: Finished difference Result 170 states and 448 transitions. [2020-10-06 01:03:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:59,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:03:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:59,300 INFO L225 Difference]: With dead ends: 170 [2020-10-06 01:03:59,300 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:03:59,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:03:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:03:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:03:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:03:59,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-06 01:03:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:59,302 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:03:59,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:03:59,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:03:59,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:03:59,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:03:59 BasicIcfg [2020-10-06 01:03:59,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:03:59,310 INFO L168 Benchmark]: Toolchain (without parser) took 3988.27 ms. Allocated memory was 142.1 MB in the beginning and 244.3 MB in the end (delta: 102.2 MB). Free memory was 103.4 MB in the beginning and 180.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,311 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.85 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 162.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.74 ms. Allocated memory is still 205.0 MB. Free memory was 162.0 MB in the beginning and 159.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,314 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,315 INFO L168 Benchmark]: RCFGBuilder took 468.41 ms. Allocated memory is still 205.0 MB. Free memory was 158.1 MB in the beginning and 136.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:59,316 INFO L168 Benchmark]: TraceAbstraction took 2777.50 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 135.4 MB in the beginning and 180.4 MB in the end (delta: -45.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:59,320 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 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.85 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 162.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.74 ms. Allocated memory is still 205.0 MB. Free memory was 162.0 MB in the beginning and 159.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.41 ms. Allocated memory is still 205.0 MB. Free memory was 158.1 MB in the beginning and 136.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2777.50 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 135.4 MB in the beginning and 180.4 MB in the end (delta: -45.0 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: 1.4s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 91 SDtfs, 29 SDslu, 68 SDs, 0 SdLazy, 38 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...