/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 22:05:30,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 22:05:30,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 22:05:30,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 22:05:30,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 22:05:30,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 22:05:30,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 22:05:30,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 22:05:30,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 22:05:30,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 22:05:30,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 22:05:30,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 22:05:30,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 22:05:30,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 22:05:30,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 22:05:30,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 22:05:30,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 22:05:30,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 22:05:30,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 22:05:30,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 22:05:30,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 22:05:30,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 22:05:30,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 22:05:30,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 22:05:30,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 22:05:30,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 22:05:30,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 22:05:30,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 22:05:30,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 22:05:30,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 22:05:30,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 22:05:30,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 22:05:30,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 22:05:30,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 22:05:30,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 22:05:30,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 22:05:30,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 22:05:30,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 22:05:30,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 22:05:30,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 22:05:30,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 22:05:30,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf [2019-12-27 22:05:30,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 22:05:30,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 22:05:30,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 22:05:30,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 22:05:30,934 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 22:05:30,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 22:05:30,934 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 22:05:30,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 22:05:30,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 22:05:30,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 22:05:30,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 22:05:30,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 22:05:30,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 22:05:30,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 22:05:30,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 22:05:30,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 22:05:30,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 22:05:30,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 22:05:30,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 22:05:30,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 22:05:30,939 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 22:05:30,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 22:05:31,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 22:05:31,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 22:05:31,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 22:05:31,211 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 22:05:31,211 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 22:05:31,212 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2019-12-27 22:05:31,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188e81443/027b6dadd6ad4b34b177f67bfa802199/FLAG765227a4d [2019-12-27 22:05:31,833 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 22:05:31,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2019-12-27 22:05:31,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188e81443/027b6dadd6ad4b34b177f67bfa802199/FLAG765227a4d [2019-12-27 22:05:32,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188e81443/027b6dadd6ad4b34b177f67bfa802199 [2019-12-27 22:05:32,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 22:05:32,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 22:05:32,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 22:05:32,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 22:05:32,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 22:05:32,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ba777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32, skipping insertion in model container [2019-12-27 22:05:32,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 22:05:32,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 22:05:32,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:05:32,669 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 22:05:32,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:05:32,795 INFO L208 MainTranslator]: Completed translation [2019-12-27 22:05:32,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32 WrapperNode [2019-12-27 22:05:32,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 22:05:32,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 22:05:32,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 22:05:32,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 22:05:32,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 22:05:32,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 22:05:32,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 22:05:32,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 22:05:32,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (1/1) ... [2019-12-27 22:05:32,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 22:05:32,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 22:05:32,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 22:05:32,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 22:05:32,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (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 [2019-12-27 22:05:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 22:05:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 22:05:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 22:05:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 22:05:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 22:05:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 22:05:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 22:05:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 22:05:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 22:05:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 22:05:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 22:05:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 22:05:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 22:05:32,939 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 22:05:33,275 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 22:05:33,276 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 22:05:33,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:05:33 BoogieIcfgContainer [2019-12-27 22:05:33,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 22:05:33,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 22:05:33,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 22:05:33,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 22:05:33,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 10:05:32" (1/3) ... [2019-12-27 22:05:33,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed6b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:05:33, skipping insertion in model container [2019-12-27 22:05:33,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:05:32" (2/3) ... [2019-12-27 22:05:33,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed6b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:05:33, skipping insertion in model container [2019-12-27 22:05:33,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:05:33" (3/3) ... [2019-12-27 22:05:33,286 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2019-12-27 22:05:33,296 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 22:05:33,296 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 22:05:33,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 22:05:33,304 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 22:05:33,334 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,334 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,334 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,335 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,335 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,335 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,337 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,337 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,337 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,337 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,338 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,341 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,342 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,342 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,351 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,352 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,352 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,352 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,365 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,366 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,366 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,366 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,369 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,369 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,369 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,370 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:05:33,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 22:05:33,418 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 22:05:33,418 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 22:05:33,419 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 22:05:33,420 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 22:05:33,420 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 22:05:33,420 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 22:05:33,421 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 22:05:33,421 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 22:05:33,436 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 22:05:33,438 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 22:05:33,487 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 22:05:33,490 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:05:33,495 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:05:33,498 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 22:05:33,521 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 22:05:33,521 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:05:33,526 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:05:33,528 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 22:05:33,529 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 22:05:34,901 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-27 22:05:34,981 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-27 22:05:34,981 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-27 22:05:34,986 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-27 22:05:34,999 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-27 22:05:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-27 22:05:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 22:05:35,020 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:05:35,021 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:05:35,022 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:05:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:05:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-27 22:05:35,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:05:35,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666265454] [2019-12-27 22:05:35,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:05:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:05:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:05:35,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666265454] [2019-12-27 22:05:35,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:05:35,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 22:05:35,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [880058519] [2019-12-27 22:05:35,339 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:05:35,345 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:05:35,359 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 22:05:35,359 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:05:35,363 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:05:35,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 22:05:35,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:05:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 22:05:35,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:05:35,381 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-27 22:05:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:05:35,398 INFO L93 Difference]: Finished difference Result 50 states and 104 transitions. [2019-12-27 22:05:35,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 22:05:35,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 22:05:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:05:35,411 INFO L225 Difference]: With dead ends: 50 [2019-12-27 22:05:35,411 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 22:05:35,412 INFO L631 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 [2019-12-27 22:05:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 22:05:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 22:05:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 22:05:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 22:05:35,451 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 22:05:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:05:35,452 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 22:05:35,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 22:05:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 22:05:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 22:05:35,453 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:05:35,453 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:05:35,454 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:05:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:05:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-27 22:05:35,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:05:35,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921895805] [2019-12-27 22:05:35,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:05:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:05:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:05:35,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921895805] [2019-12-27 22:05:35,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:05:35,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 22:05:35,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1408040686] [2019-12-27 22:05:35,532 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:05:35,535 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:05:35,540 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 22:05:35,541 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:05:35,541 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:05:35,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 22:05:35,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:05:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 22:05:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:05:35,543 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-27 22:05:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:05:35,553 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-27 22:05:35,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 22:05:35,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 22:05:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:05:35,555 INFO L225 Difference]: With dead ends: 32 [2019-12-27 22:05:35,555 INFO L226 Difference]: Without dead ends: 32 [2019-12-27 22:05:35,556 INFO L631 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 [2019-12-27 22:05:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-27 22:05:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-27 22:05:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-27 22:05:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-27 22:05:35,566 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 9 [2019-12-27 22:05:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:05:35,566 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-27 22:05:35,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 22:05:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-27 22:05:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 22:05:35,568 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:05:35,568 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:05:35,569 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:05:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:05:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1542654109, now seen corresponding path program 1 times [2019-12-27 22:05:35,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:05:35,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679103247] [2019-12-27 22:05:35,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:05:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:05:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:05:35,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679103247] [2019-12-27 22:05:35,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:05:35,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:05:35,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [445178200] [2019-12-27 22:05:35,658 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:05:35,659 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:05:35,668 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 22:05:35,669 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:05:35,670 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:05:35,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:05:35,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:05:35,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:05:35,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:05:35,672 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 4 states. [2019-12-27 22:05:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:05:35,701 INFO L93 Difference]: Finished difference Result 37 states and 63 transitions. [2019-12-27 22:05:35,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:05:35,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 22:05:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:05:35,703 INFO L225 Difference]: With dead ends: 37 [2019-12-27 22:05:35,704 INFO L226 Difference]: Without dead ends: 25 [2019-12-27 22:05:35,705 INFO L631 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 [2019-12-27 22:05:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-27 22:05:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-27 22:05:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-27 22:05:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2019-12-27 22:05:35,709 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2019-12-27 22:05:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:05:35,709 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2019-12-27 22:05:35,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:05:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2019-12-27 22:05:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 22:05:35,710 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:05:35,710 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:05:35,710 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:05:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:05:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-27 22:05:35,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:05:35,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324281859] [2019-12-27 22:05:35,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:05:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:05:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:05:35,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324281859] [2019-12-27 22:05:35,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:05:35,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:05:35,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1487538764] [2019-12-27 22:05:35,809 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:05:35,812 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:05:35,815 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 18 states and 23 transitions. [2019-12-27 22:05:35,815 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:05:35,863 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 22:05:35,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 22:05:35,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:05:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 22:05:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 22:05:35,864 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 5 states. [2019-12-27 22:05:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:05:35,900 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2019-12-27 22:05:35,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:05:35,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-27 22:05:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:05:35,901 INFO L225 Difference]: With dead ends: 29 [2019-12-27 22:05:35,901 INFO L226 Difference]: Without dead ends: 15 [2019-12-27 22:05:35,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 22:05:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-27 22:05:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-27 22:05:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-27 22:05:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-27 22:05:35,905 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-12-27 22:05:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:05:35,907 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-27 22:05:35,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 22:05:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-27 22:05:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 22:05:35,908 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:05:35,908 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:05:35,909 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:05:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:05:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1231559623, now seen corresponding path program 2 times [2019-12-27 22:05:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:05:35,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283100943] [2019-12-27 22:05:35,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:05:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:05:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:05:35,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283100943] [2019-12-27 22:05:35,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:05:35,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:05:35,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1992491271] [2019-12-27 22:05:35,993 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:05:35,994 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:05:35,996 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 12 states and 11 transitions. [2019-12-27 22:05:35,996 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:05:35,996 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:05:35,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:05:35,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:05:35,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:05:35,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:05:35,998 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-27 22:05:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:05:36,012 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-27 22:05:36,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:05:36,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 22:05:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:05:36,013 INFO L225 Difference]: With dead ends: 14 [2019-12-27 22:05:36,014 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 22:05:36,014 INFO L631 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 [2019-12-27 22:05:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 22:05:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 22:05:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 22:05:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 22:05:36,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 22:05:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:05:36,015 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 22:05:36,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:05:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 22:05:36,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 22:05:36,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 10:05:36 BasicIcfg [2019-12-27 22:05:36,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 22:05:36,021 INFO L168 Benchmark]: Toolchain (without parser) took 3877.97 ms. Allocated memory was 138.9 MB in the beginning and 244.8 MB in the end (delta: 105.9 MB). Free memory was 102.0 MB in the beginning and 146.5 MB in the end (delta: -44.5 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,022 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.80 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 160.0 MB in the end (delta: -58.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,025 INFO L168 Benchmark]: Boogie Preprocessor took 27.30 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,026 INFO L168 Benchmark]: RCFGBuilder took 407.89 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 135.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,027 INFO L168 Benchmark]: TraceAbstraction took 2740.89 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 135.2 MB in the beginning and 146.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-12-27 22:05:36,031 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.80 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 160.0 MB in the end (delta: -58.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.30 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.89 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 135.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2740.89 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 135.2 MB in the beginning and 146.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 32 SDslu, 28 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1182 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...