/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:25,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:25,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:25,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:25,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:25,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:25,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:25,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:25,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:25,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:25,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:25,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:25,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:25,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:25,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:25,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:25,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:25,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:25,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:25,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:25,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:25,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:25,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:25,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:25,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:12:25,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:12:25,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:12:25,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:12:25,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:12:25,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:12:25,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:25,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:25,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:25,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:25,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:25,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:25,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:25,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:25,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:25,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:25,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:25,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:12:25,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:25,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:25,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:25,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:25,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:25,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:25,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:25,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:25,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:25,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:25,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:25,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:25,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:25,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:25,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:25,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:25,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:25,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:25,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:25,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:25,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:25,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:25,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:25,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:25,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:25,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:25,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:25,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:25,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:25,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:25,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:25,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:25,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:25,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:25,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 05:12:25,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ca9256f/01af08d4b0dc4c938d2de43f1f5fbf34/FLAG773e0f932 [2020-10-16 05:12:26,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:26,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 05:12:26,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ca9256f/01af08d4b0dc4c938d2de43f1f5fbf34/FLAG773e0f932 [2020-10-16 05:12:26,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ca9256f/01af08d4b0dc4c938d2de43f1f5fbf34 [2020-10-16 05:12:26,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:26,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:26,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:26,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:26,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:26,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:26" (1/1) ... [2020-10-16 05:12:26,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306c23e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:26, skipping insertion in model container [2020-10-16 05:12:26,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:26" (1/1) ... [2020-10-16 05:12:26,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:26,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:27,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:27,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:27,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:27,244 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:27,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27 WrapperNode [2020-10-16 05:12:27,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:27,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:27,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:27,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:27,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:27,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:27,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:27,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:27,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... [2020-10-16 05:12:27,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:27,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:27,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:27,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:27,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:12:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:12:27,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:12:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:12:27,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:12:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:12:27,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:12:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:12:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:12:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:12:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:27,416 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:12:27,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:27,802 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:12:27,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:27 BoogieIcfgContainer [2020-10-16 05:12:27,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:27,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:27,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:27,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:27,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:26" (1/3) ... [2020-10-16 05:12:27,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b855854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:27, skipping insertion in model container [2020-10-16 05:12:27,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:27" (2/3) ... [2020-10-16 05:12:27,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b855854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:27, skipping insertion in model container [2020-10-16 05:12:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:27" (3/3) ... [2020-10-16 05:12:27,814 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-16 05:12:27,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:27,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:27,835 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:27,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,869 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,869 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,872 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,872 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,872 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,873 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,873 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,873 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,880 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,890 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,890 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,890 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,891 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,898 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,898 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,898 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,899 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:27,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:12:27,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:27,936 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:27,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:27,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:27,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:27,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:27,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:27,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:27,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 05:12:28,001 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-16 05:12:28,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:28,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-16 05:12:28,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 05:12:28,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-16 05:12:28,016 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:28,019 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 150 flow [2020-10-16 05:12:28,022 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 150 flow [2020-10-16 05:12:28,022 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 150 flow [2020-10-16 05:12:28,048 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2020-10-16 05:12:28,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:28,050 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-10-16 05:12:28,052 INFO L117 LiptonReduction]: Number of co-enabled transitions 1392 [2020-10-16 05:12:29,591 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-16 05:12:29,724 INFO L132 LiptonReduction]: Checked pairs total: 3412 [2020-10-16 05:12:29,725 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 05:12:29,728 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1714 [2020-10-16 05:12:29,737 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 05:12:29,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:29,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:29,738 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:29,739 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1611556140, now seen corresponding path program 1 times [2020-10-16 05:12:29,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:29,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516820923] [2020-10-16 05:12:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:29,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516820923] [2020-10-16 05:12:29,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:29,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:29,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766365593] [2020-10-16 05:12:29,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 05:12:29,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:29,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 05:12:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 05:12:29,979 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 138 [2020-10-16 05:12:29,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 58 flow. Second operand 2 states. [2020-10-16 05:12:29,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:29,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 138 [2020-10-16 05:12:29,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:29,995 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:12:29,995 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:29,996 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 05:12:29,997 INFO L132 encePairwiseOnDemand]: 137/138 looper letters, 0 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2020-10-16 05:12:29,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 56 flow [2020-10-16 05:12:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 05:12:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 05:12:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2020-10-16 05:12:30,014 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9456521739130435 [2020-10-16 05:12:30,015 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 261 transitions. [2020-10-16 05:12:30,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 261 transitions. [2020-10-16 05:12:30,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 261 transitions. [2020-10-16 05:12:30,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 05:12:30,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 05:12:30,031 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 05:12:30,033 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 58 flow. Second operand 2 states and 261 transitions. [2020-10-16 05:12:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 56 flow [2020-10-16 05:12:30,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 52 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:12:30,039 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 52 flow [2020-10-16 05:12:30,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 05:12:30,043 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2020-10-16 05:12:30,044 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 52 flow [2020-10-16 05:12:30,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 05:12:30,044 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:30,044 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:30,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:30,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1581367250, now seen corresponding path program 1 times [2020-10-16 05:12:30,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:30,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267925196] [2020-10-16 05:12:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:30,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267925196] [2020-10-16 05:12:30,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:30,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:30,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176137729] [2020-10-16 05:12:30,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:30,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:30,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:30,156 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2020-10-16 05:12:30,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 52 flow. Second operand 3 states. [2020-10-16 05:12:30,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:30,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2020-10-16 05:12:30,157 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:30,178 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:12:30,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:30,178 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:12:30,179 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:12:30,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 58 flow [2020-10-16 05:12:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2020-10-16 05:12:30,183 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.857487922705314 [2020-10-16 05:12:30,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2020-10-16 05:12:30,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2020-10-16 05:12:30,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2020-10-16 05:12:30,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:30,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:30,189 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:30,189 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 52 flow. Second operand 3 states and 355 transitions. [2020-10-16 05:12:30,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 58 flow [2020-10-16 05:12:30,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:12:30,192 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 60 flow [2020-10-16 05:12:30,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:12:30,193 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2020-10-16 05:12:30,193 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 60 flow [2020-10-16 05:12:30,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:30,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:30,193 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:30,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:30,194 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2101455728, now seen corresponding path program 1 times [2020-10-16 05:12:30,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:30,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213309988] [2020-10-16 05:12:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:30,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213309988] [2020-10-16 05:12:30,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:30,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:30,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387856694] [2020-10-16 05:12:30,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:30,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:30,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:30,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:30,277 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2020-10-16 05:12:30,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 60 flow. Second operand 4 states. [2020-10-16 05:12:30,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:30,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2020-10-16 05:12:30,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:30,307 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-10-16 05:12:30,308 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2020-10-16 05:12:30,308 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 27 events. 0/27 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:30,308 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 05:12:30,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 75 flow [2020-10-16 05:12:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2020-10-16 05:12:30,313 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8387681159420289 [2020-10-16 05:12:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2020-10-16 05:12:30,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2020-10-16 05:12:30,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2020-10-16 05:12:30,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:30,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:30,318 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:30,318 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 60 flow. Second operand 4 states and 463 transitions. [2020-10-16 05:12:30,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 75 flow [2020-10-16 05:12:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:30,320 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 70 flow [2020-10-16 05:12:30,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2020-10-16 05:12:30,320 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2020-10-16 05:12:30,321 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 70 flow [2020-10-16 05:12:30,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:30,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:30,322 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:30,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:30,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:30,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:30,322 INFO L82 PathProgramCache]: Analyzing trace with hash -985104395, now seen corresponding path program 1 times [2020-10-16 05:12:30,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:30,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 05:12:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:30,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 05:12:30,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:30,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:30,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117229457] [2020-10-16 05:12:30,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:30,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:30,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:30,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:30,445 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 05:12:30,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:12:30,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:30,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 05:12:30,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:30,484 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2020-10-16 05:12:30,485 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-16 05:12:30,485 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 30 events. 0/30 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:30,485 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 05:12:30,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 82 flow [2020-10-16 05:12:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2020-10-16 05:12:30,490 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2020-10-16 05:12:30,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:30,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:30,495 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:30,495 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states and 455 transitions. [2020-10-16 05:12:30,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 82 flow [2020-10-16 05:12:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 68 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 05:12:30,497 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 70 flow [2020-10-16 05:12:30,497 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2020-10-16 05:12:30,498 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2020-10-16 05:12:30,498 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 70 flow [2020-10-16 05:12:30,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:30,498 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:30,498 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:30,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:12:30,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:30,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1125705331, now seen corresponding path program 1 times [2020-10-16 05:12:30,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:30,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405572969] [2020-10-16 05:12:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:30,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405572969] [2020-10-16 05:12:30,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:30,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:30,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572823134] [2020-10-16 05:12:30,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:30,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:30,548 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 05:12:30,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:12:30,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:30,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 05:12:30,549 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:30,573 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2020-10-16 05:12:30,573 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2020-10-16 05:12:30,573 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 33 events. 0/33 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:30,573 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 05:12:30,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 82 flow [2020-10-16 05:12:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2020-10-16 05:12:30,575 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2020-10-16 05:12:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2020-10-16 05:12:30,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:30,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:30,578 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:30,578 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states and 455 transitions. [2020-10-16 05:12:30,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 82 flow [2020-10-16 05:12:30,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 70 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:12:30,580 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 72 flow [2020-10-16 05:12:30,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2020-10-16 05:12:30,580 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2020-10-16 05:12:30,580 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 72 flow [2020-10-16 05:12:30,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:30,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:30,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:30,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:12:30,581 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:30,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:30,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1609242885, now seen corresponding path program 1 times [2020-10-16 05:12:30,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:30,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197219302] [2020-10-16 05:12:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:30,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197219302] [2020-10-16 05:12:30,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:30,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:30,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779461156] [2020-10-16 05:12:30,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:30,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:30,641 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 05:12:30,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 72 flow. Second operand 4 states. [2020-10-16 05:12:30,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:30,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 05:12:30,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:30,657 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-16 05:12:30,657 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 05:12:30,657 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 21 events. 0/21 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 05:12:30,658 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-16 05:12:30,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 21 transitions, 70 flow [2020-10-16 05:12:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:30,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 453 transitions. [2020-10-16 05:12:30,660 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206521739130435 [2020-10-16 05:12:30,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 453 transitions. [2020-10-16 05:12:30,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 453 transitions. [2020-10-16 05:12:30,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:30,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 453 transitions. [2020-10-16 05:12:30,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:30,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:30,665 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:30,665 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 72 flow. Second operand 4 states and 453 transitions. [2020-10-16 05:12:30,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 21 transitions, 70 flow [2020-10-16 05:12:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 21 transitions, 60 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 05:12:30,666 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 05:12:30,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 05:12:30,667 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 05:12:30,667 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 05:12:30,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:30,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:12:30,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:12:30 BasicIcfg [2020-10-16 05:12:30,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:12:30,674 INFO L168 Benchmark]: Toolchain (without parser) took 4263.65 ms. Allocated memory was 251.7 MB in the beginning and 374.3 MB in the end (delta: 122.7 MB). Free memory was 203.7 MB in the beginning and 257.1 MB in the end (delta: -53.4 MB). Peak memory consumption was 69.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:30,675 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:30,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.42 ms. Allocated memory was 251.7 MB in the beginning and 318.2 MB in the end (delta: 66.6 MB). Free memory was 203.7 MB in the beginning and 271.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:30,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.87 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:30,677 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 318.2 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:30,678 INFO L168 Benchmark]: RCFGBuilder took 465.50 ms. Allocated memory is still 318.2 MB. Free memory was 268.6 MB in the beginning and 241.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:30,679 INFO L168 Benchmark]: TraceAbstraction took 2866.15 ms. Allocated memory was 318.2 MB in the beginning and 374.3 MB in the end (delta: 56.1 MB). Free memory was 241.7 MB in the beginning and 257.1 MB in the end (delta: -15.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:30,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 834.42 ms. Allocated memory was 251.7 MB in the beginning and 318.2 MB in the end (delta: 66.6 MB). Free memory was 203.7 MB in the beginning and 271.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 62.87 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 318.2 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 465.50 ms. Allocated memory is still 318.2 MB. Free memory was 268.6 MB in the beginning and 241.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2866.15 ms. Allocated memory was 318.2 MB in the beginning and 374.3 MB in the end (delta: 56.1 MB). Free memory was 241.7 MB in the beginning and 257.1 MB in the end (delta: -15.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 174 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 81 PlacesBefore, 35 PlacesAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 3412 MoverChecksTotal - 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 15 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 19 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...