/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/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:41:21,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:41:21,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:41:21,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:41:21,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:41:21,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:41:21,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:41:21,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:41:21,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:41:21,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:41:21,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:41:21,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:41:21,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:41:21,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:41:21,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:41:21,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:41:21,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:41:21,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:41:21,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:41:21,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:41:21,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:41:21,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:41:21,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:41:21,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:41:21,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:41:21,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:41:21,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:41:21,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:41:21,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:41:21,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:41:21,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:41:21,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:41:21,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:41:21,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:41:21,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:41:21,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:41:21,976 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 [2020-09-18 00:41:22,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:41:22,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:41:22,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:41:22,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:41:22,007 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:41:22,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:41:22,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:41:22,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:41:22,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:41:22,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:41:22,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:41:22,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:41:22,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:41:22,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:41:22,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:41:22,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:41:22,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:41:22,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:41:22,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:41:22,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:41:22,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:41:22,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:41:22,013 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:41:22,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:41:22,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:41:22,014 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:41:22,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:41:22,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:41:22,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:41:22,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:41:22,514 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:41:22,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-18 00:41:22,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d444f1c1/a7b1d10efb7e411894760286aab2dc5a/FLAGa748d95ba [2020-09-18 00:41:23,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:41:23,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-18 00:41:23,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d444f1c1/a7b1d10efb7e411894760286aab2dc5a/FLAGa748d95ba [2020-09-18 00:41:23,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d444f1c1/a7b1d10efb7e411894760286aab2dc5a [2020-09-18 00:41:23,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:41:23,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:41:23,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:41:23,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:41:23,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:41:23,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:41:23" (1/1) ... [2020-09-18 00:41:23,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abb30e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:23, skipping insertion in model container [2020-09-18 00:41:23,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:41:23" (1/1) ... [2020-09-18 00:41:23,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:41:23,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:41:24,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:41:24,120 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:41:24,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:41:24,247 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:41:24,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24 WrapperNode [2020-09-18 00:41:24,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:41:24,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:41:24,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:41:24,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:41:24,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:41:24,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:41:24,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:41:24,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:41:24,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (1/1) ... [2020-09-18 00:41:24,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:41:24,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:41:24,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:41:24,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:41:24,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (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 [2020-09-18 00:41:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:41:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:41:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:41:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:41:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:41:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:41:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:41:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:41:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:41:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:41:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:41:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:41:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:41:24,432 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:41:24,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:41:24,900 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:41:24,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:41:24 BoogieIcfgContainer [2020-09-18 00:41:24,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:41:24,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:41:24,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:41:24,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:41:24,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:41:23" (1/3) ... [2020-09-18 00:41:24,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fdbf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:41:24, skipping insertion in model container [2020-09-18 00:41:24,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:41:24" (2/3) ... [2020-09-18 00:41:24,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fdbf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:41:24, skipping insertion in model container [2020-09-18 00:41:24,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:41:24" (3/3) ... [2020-09-18 00:41:24,916 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-09-18 00:41:24,928 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:41:24,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:41:24,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:41:24,939 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:41:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,982 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,982 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,983 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,983 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:24,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,004 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,008 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,008 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:41:25,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:41:25,069 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:41:25,069 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:41:25,069 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:41:25,069 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:41:25,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:41:25,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:41:25,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:41:25,070 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:41:25,088 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-18 00:41:25,090 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:41:25,140 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:41:25,140 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:41:25,147 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 54 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. [2020-09-18 00:41:25,150 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:41:25,175 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:41:25,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:41:25,176 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 54 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. [2020-09-18 00:41:25,178 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:41:25,180 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:41:26,786 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-09-18 00:41:26,786 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-18 00:41:26,791 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 00:41:26,820 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:41:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:41:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:41:26,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:41:26,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:41:26,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:41:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:41:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-09-18 00:41:26,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:41:26,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256194791] [2020-09-18 00:41:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:41:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:41:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:41:27,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256194791] [2020-09-18 00:41:27,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:41:27,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:41:27,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1108991051] [2020-09-18 00:41:27,143 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:41:27,147 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:41:27,166 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:41:27,166 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:41:27,168 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:41:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:41:27,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:41:27,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:41:27,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,192 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:41:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:41:27,255 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-18 00:41:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:41:27,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:41:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:41:27,291 INFO L225 Difference]: With dead ends: 290 [2020-09-18 00:41:27,292 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 00:41:27,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 00:41:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 00:41:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 00:41:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-18 00:41:27,369 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-18 00:41:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:41:27,370 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-18 00:41:27,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:41:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-18 00:41:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:41:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:41:27,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:41:27,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:41:27,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:41:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:41:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-09-18 00:41:27,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:41:27,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178043338] [2020-09-18 00:41:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:41:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:41:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:41:27,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178043338] [2020-09-18 00:41:27,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:41:27,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:41:27,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1648142420] [2020-09-18 00:41:27,519 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:41:27,520 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:41:27,522 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-18 00:41:27,522 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:41:27,555 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:41:27,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:41:27,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:41:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:41:27,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,558 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-18 00:41:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:41:27,566 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-09-18 00:41:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:41:27,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 00:41:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:41:27,570 INFO L225 Difference]: With dead ends: 212 [2020-09-18 00:41:27,570 INFO L226 Difference]: Without dead ends: 212 [2020-09-18 00:41:27,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-18 00:41:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-18 00:41:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-18 00:41:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-09-18 00:41:27,593 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-09-18 00:41:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:41:27,593 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-09-18 00:41:27,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:41:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-09-18 00:41:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:41:27,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:41:27,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:41:27,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:41:27,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:41:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:41:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 560175129, now seen corresponding path program 1 times [2020-09-18 00:41:27,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:41:27,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993749750] [2020-09-18 00:41:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:41:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:41:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:41:27,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993749750] [2020-09-18 00:41:27,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:41:27,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:41:27,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [517565909] [2020-09-18 00:41:27,703 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:41:27,704 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:41:27,706 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-18 00:41:27,706 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:41:27,756 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:41:27,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:41:27,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:41:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:41:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:41:27,757 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-09-18 00:41:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:41:27,782 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-18 00:41:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:41:27,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 00:41:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:41:27,785 INFO L225 Difference]: With dead ends: 242 [2020-09-18 00:41:27,785 INFO L226 Difference]: Without dead ends: 146 [2020-09-18 00:41:27,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:41:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-18 00:41:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-18 00:41:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-18 00:41:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-18 00:41:27,798 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-09-18 00:41:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:41:27,798 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-18 00:41:27,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:41:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-18 00:41:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:41:27,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:41:27,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:41:27,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:41:27,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:41:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:41:27,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480203, now seen corresponding path program 1 times [2020-09-18 00:41:27,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:41:27,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293304290] [2020-09-18 00:41:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:41:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:41:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:41:27,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293304290] [2020-09-18 00:41:27,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:41:27,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:41:27,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [627082283] [2020-09-18 00:41:27,872 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:41:27,873 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:41:27,875 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-18 00:41:27,875 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:41:27,900 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:41:27,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:41:27,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:41:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:41:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,901 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-18 00:41:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:41:27,909 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-09-18 00:41:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:41:27,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:41:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:41:27,911 INFO L225 Difference]: With dead ends: 144 [2020-09-18 00:41:27,911 INFO L226 Difference]: Without dead ends: 144 [2020-09-18 00:41:27,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:41:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-18 00:41:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-18 00:41:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-18 00:41:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-18 00:41:27,922 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-09-18 00:41:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:41:27,923 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-18 00:41:27,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:41:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-18 00:41:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:41:27,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:41:27,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:41:27,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:41:27,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:41:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:41:27,926 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-09-18 00:41:27,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:41:27,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852185022] [2020-09-18 00:41:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:41:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:41:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:41:28,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852185022] [2020-09-18 00:41:28,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:41:28,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:41:28,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909580639] [2020-09-18 00:41:28,024 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:41:28,025 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:41:28,029 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-18 00:41:28,030 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:41:28,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,088 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,108 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,143 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,164 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,188 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,206 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:41:28,296 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:41:28,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:41:28,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:41:28,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:41:28,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:41:28,297 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-09-18 00:41:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:41:28,340 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-09-18 00:41:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:41:28,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-18 00:41:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:41:28,341 INFO L225 Difference]: With dead ends: 122 [2020-09-18 00:41:28,341 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:41:28,341 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 [2020-09-18 00:41:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:41:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:41:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:41:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:41:28,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-18 00:41:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:41:28,343 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:41:28,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:41:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:41:28,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:41:28,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:41:28,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:41:28 BasicIcfg [2020-09-18 00:41:28,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:41:28,352 INFO L168 Benchmark]: Toolchain (without parser) took 4884.24 ms. Allocated memory was 145.8 MB in the beginning and 249.6 MB in the end (delta: 103.8 MB). Free memory was 100.1 MB in the beginning and 205.5 MB in the end (delta: -105.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:41:28,353 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:41:28,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.59 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 159.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-18 00:41:28,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:41:28,356 INFO L168 Benchmark]: Boogie Preprocessor took 33.97 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-18 00:41:28,357 INFO L168 Benchmark]: RCFGBuilder took 562.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 134.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-18 00:41:28,358 INFO L168 Benchmark]: TraceAbstraction took 3441.77 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 133.7 MB in the beginning and 205.5 MB in the end (delta: -71.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:41:28,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.59 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 159.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.97 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 134.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3441.77 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 133.7 MB in the beginning and 205.5 MB in the end (delta: -71.8 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: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2287 CheckedPairsTotal, 56 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: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 85 SDtfs, 46 SDslu, 80 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1245 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...