/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:56:48,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:56:48,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:56:48,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:56:48,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:56:48,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:56:48,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:56:48,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:56:48,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:56:48,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:56:48,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:56:48,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:56:48,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:56:48,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:56:48,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:56:48,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:56:48,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:56:48,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:56:48,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:56:48,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:56:48,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:56:48,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:56:48,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:56:48,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:56:48,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:56:48,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:56:48,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:56:48,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:56:48,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:56:48,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:56:48,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:56:48,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:56:48,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:56:48,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:56:48,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:56:48,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:56:48,610 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 00:56:48,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:56:48,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:56:48,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:56:48,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:56:48,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:56:48,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:56:48,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:56:48,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:56:48,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:56:48,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:56:48,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:56:48,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:56:48,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:56:48,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:56:48,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:56:48,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:56:48,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:56:48,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:56:48,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:56:48,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:56:48,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:56:48,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:56:48,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:56:48,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:56:48,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:56:48,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:56:48,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:56:48,661 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:56:48,662 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:56:48,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:56:48,662 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:56:49,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:56:49,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:56:49,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:56:49,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:56:49,154 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:56:49,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-09-18 00:56:49,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666138e73/2768ecf4d4094c2db2f63a45c2c04849/FLAGba5006582 [2020-09-18 00:56:49,903 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:56:49,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-09-18 00:56:49,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666138e73/2768ecf4d4094c2db2f63a45c2c04849/FLAGba5006582 [2020-09-18 00:56:50,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666138e73/2768ecf4d4094c2db2f63a45c2c04849 [2020-09-18 00:56:50,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:56:50,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:56:50,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:56:50,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:56:50,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:56:50,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:50,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eedb2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50, skipping insertion in model container [2020-09-18 00:56:50,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:50,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:56:50,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:56:50,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:56:50,793 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:56:50,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:56:50,935 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:56:50,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50 WrapperNode [2020-09-18 00:56:50,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:56:50,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:56:50,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:56:50,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:56:50,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:50,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:50,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:56:50,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:56:50,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:56:50,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:56:51,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (1/1) ... [2020-09-18 00:56:51,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:56:51,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:56:51,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:56:51,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:56:51,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (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 00:56:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:56:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:56:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:56:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:56:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:56:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:56:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:56:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:56:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:56:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:56:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:56:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:56:51,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:56:51,122 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 00:56:51,548 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:56:51,549 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:56:51,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:56:51 BoogieIcfgContainer [2020-09-18 00:56:51,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:56:51,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:56:51,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:56:51,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:56:51,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:56:50" (1/3) ... [2020-09-18 00:56:51,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ca09da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:56:51, skipping insertion in model container [2020-09-18 00:56:51,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:56:50" (2/3) ... [2020-09-18 00:56:51,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ca09da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:56:51, skipping insertion in model container [2020-09-18 00:56:51,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:56:51" (3/3) ... [2020-09-18 00:56:51,565 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-09-18 00:56:51,577 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:56:51,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:56:51,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:56:51,590 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:56:51,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,626 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,626 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,641 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,641 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,645 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,646 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,646 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,646 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:56:51,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:56:51,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:56:51,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:56:51,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:56:51,693 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:56:51,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:56:51,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:56:51,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:56:51,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:56:51,712 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-18 00:56:51,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:56:51,767 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:56:51,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:56:51,774 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:56:51,777 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:56:51,799 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:56:51,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:56:51,800 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:56:51,803 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:56:51,806 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:56:53,305 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-09-18 00:56:53,305 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-18 00:56:53,310 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:56:53,339 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:56:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:56:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:56:53,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:56:53,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:56:53,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:56:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:56:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-09-18 00:56:53,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:56:53,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225456959] [2020-09-18 00:56:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:56:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:56:53,638 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 00:56:53,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225456959] [2020-09-18 00:56:53,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:56:53,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:56:53,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1841666165] [2020-09-18 00:56:53,646 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:56:53,651 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:56:53,675 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:56:53,675 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:56:53,682 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:56:53,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:56:53,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:56:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:56:53,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:53,712 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:56:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:56:53,757 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-18 00:56:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:56:53,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:56:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:56:53,781 INFO L225 Difference]: With dead ends: 282 [2020-09-18 00:56:53,782 INFO L226 Difference]: Without dead ends: 218 [2020-09-18 00:56:53,784 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 00:56:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-18 00:56:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-18 00:56:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-18 00:56:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-18 00:56:53,864 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-18 00:56:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:56:53,865 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-18 00:56:53,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:56:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-18 00:56:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:56:53,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:56:53,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:56:53,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:56:53,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:56:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:56:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-09-18 00:56:53,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:56:53,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950108510] [2020-09-18 00:56:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:56:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:56:54,003 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 00:56:54,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950108510] [2020-09-18 00:56:54,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:56:54,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:56:54,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1402167792] [2020-09-18 00:56:54,005 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:56:54,007 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:56:54,014 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-18 00:56:54,014 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:56:54,047 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:56:54,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:56:54,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:56:54,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:56:54,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,050 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-18 00:56:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:56:54,077 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-18 00:56:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:56:54,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 00:56:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:56:54,080 INFO L225 Difference]: With dead ends: 202 [2020-09-18 00:56:54,080 INFO L226 Difference]: Without dead ends: 202 [2020-09-18 00:56:54,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-18 00:56:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-18 00:56:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-18 00:56:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-18 00:56:54,099 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-18 00:56:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:56:54,100 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-18 00:56:54,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:56:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-18 00:56:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:56:54,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:56:54,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:56:54,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:56:54,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:56:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:56:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-09-18 00:56:54,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:56:54,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144563156] [2020-09-18 00:56:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:56:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:56:54,169 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 00:56:54,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144563156] [2020-09-18 00:56:54,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:56:54,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:56:54,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [963772492] [2020-09-18 00:56:54,170 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:56:54,171 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:56:54,173 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-18 00:56:54,173 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:56:54,197 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:56:54,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:56:54,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:56:54,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:56:54,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,198 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-18 00:56:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:56:54,207 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-09-18 00:56:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:56:54,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 00:56:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:56:54,210 INFO L225 Difference]: With dead ends: 198 [2020-09-18 00:56:54,210 INFO L226 Difference]: Without dead ends: 198 [2020-09-18 00:56:54,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-18 00:56:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-18 00:56:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-18 00:56:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-09-18 00:56:54,225 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-09-18 00:56:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:56:54,226 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-09-18 00:56:54,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:56:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-09-18 00:56:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:56:54,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:56:54,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:56:54,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:56:54,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:56:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:56:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-09-18 00:56:54,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:56:54,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391846486] [2020-09-18 00:56:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:56:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:56:54,307 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 00:56:54,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391846486] [2020-09-18 00:56:54,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:56:54,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:56:54,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [566278377] [2020-09-18 00:56:54,309 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:56:54,310 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:56:54,313 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-09-18 00:56:54,313 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:56:54,430 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:56:54,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:56:54,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:56:54,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:56:54,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,431 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-09-18 00:56:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:56:54,439 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-09-18 00:56:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:56:54,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:56:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:56:54,441 INFO L225 Difference]: With dead ends: 192 [2020-09-18 00:56:54,442 INFO L226 Difference]: Without dead ends: 192 [2020-09-18 00:56:54,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:56:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-18 00:56:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-18 00:56:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-18 00:56:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-09-18 00:56:54,453 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-09-18 00:56:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:56:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-09-18 00:56:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:56:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-09-18 00:56:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:56:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:56:54,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:56:54,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:56:54,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:56:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:56:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-09-18 00:56:54,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:56:54,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518863495] [2020-09-18 00:56:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:56:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:56:54,544 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 00:56:54,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518863495] [2020-09-18 00:56:54,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:56:54,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:56:54,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [497437428] [2020-09-18 00:56:54,546 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:56:54,547 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:56:54,551 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-18 00:56:54,552 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:56:54,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,628 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,667 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,699 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:56:54,765 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:56:54,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:56:54,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:56:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:56:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:56:54,766 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-09-18 00:56:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:56:54,810 INFO L93 Difference]: Finished difference Result 170 states and 448 transitions. [2020-09-18 00:56:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:56:54,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-18 00:56:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:56:54,811 INFO L225 Difference]: With dead ends: 170 [2020-09-18 00:56:54,812 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:56:54,812 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 00:56:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:56:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:56:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:56:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:56:54,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-18 00:56:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:56:54,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:56:54,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:56:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:56:54,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:56:54,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:56:54,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:56:54 BasicIcfg [2020-09-18 00:56:54,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:56:54,823 INFO L168 Benchmark]: Toolchain (without parser) took 4658.98 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 101.5 MB in the beginning and 205.9 MB in the end (delta: -104.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,824 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.13 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 161.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.02 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 158.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,827 INFO L168 Benchmark]: Boogie Preprocessor took 32.45 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 976.6 kB). Peak memory consumption was 976.6 kB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,827 INFO L168 Benchmark]: RCFGBuilder took 524.62 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 135.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-18 00:56:54,828 INFO L168 Benchmark]: TraceAbstraction took 3263.04 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 134.7 MB in the beginning and 205.9 MB in the end (delta: -71.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:56:54,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.13 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 161.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.02 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 158.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.45 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 976.6 kB). Peak memory consumption was 976.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 524.62 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 135.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3263.04 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 134.7 MB in the beginning and 205.9 MB in the end (delta: -71.2 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: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 91 SDtfs, 29 SDslu, 68 SDs, 0 SdLazy, 38 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s 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, 1181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...