/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:04:35,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:04:35,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:04:36,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:04:36,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:04:36,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:04:36,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:04:36,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:04:36,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:04:36,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:04:36,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:04:36,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:04:36,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:04:36,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:04:36,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:04:36,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:04:36,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:04:36,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:04:36,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:04:36,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:04:36,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:04:36,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:04:36,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:04:36,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:04:36,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:04:36,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:04:36,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:04:36,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:04:36,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:04:36,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:04:36,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:04:36,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:04:36,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:04:36,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:04:36,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:04:36,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:04:36,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:04:36,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:04:36,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:04:36,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:04:36,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:04:36,034 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 05:04:36,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:04:36,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:04:36,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:04:36,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:04:36,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:04:36,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:04:36,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:04:36,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:04:36,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:04:36,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:04:36,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:04:36,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:04:36,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:04:36,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:04:36,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:04:36,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:04:36,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:04:36,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:04:36,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:04:36,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:04:36,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:04:36,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:04:36,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:04:36,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:04:36,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:04:36,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:04:36,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:04:36,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:04:36,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:04:36,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:04:36,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:04:36,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:04:36,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:04:36,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:04:36,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-16 05:04:36,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee9cb3ce/085cbfb2e8e547fdbb3c1d07389b9816/FLAGbfd384e3c [2020-10-16 05:04:37,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:04:37,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-16 05:04:37,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee9cb3ce/085cbfb2e8e547fdbb3c1d07389b9816/FLAGbfd384e3c [2020-10-16 05:04:37,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee9cb3ce/085cbfb2e8e547fdbb3c1d07389b9816 [2020-10-16 05:04:37,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:04:37,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:04:37,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:37,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:04:37,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:04:37,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:37" (1/1) ... [2020-10-16 05:04:37,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b39db90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:37, skipping insertion in model container [2020-10-16 05:04:37,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:37" (1/1) ... [2020-10-16 05:04:37,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:04:37,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:04:37,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:37,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:04:37,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:38,018 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:04:38,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38 WrapperNode [2020-10-16 05:04:38,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:38,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:38,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:04:38,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:04:38,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:38,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:04:38,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:04:38,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:04:38,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (1/1) ... [2020-10-16 05:04:38,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:04:38,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:04:38,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:04:38,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:04:38,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (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 05:04:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:04:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:04:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:04:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:04:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:04:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:04:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:04:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:04:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:04:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:04:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:04:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:04:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:04:38,179 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 05:04:38,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:04:38,506 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:04:38,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:38 BoogieIcfgContainer [2020-10-16 05:04:38,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:04:38,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:04:38,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:04:38,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:04:38,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:04:37" (1/3) ... [2020-10-16 05:04:38,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3ec095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:38, skipping insertion in model container [2020-10-16 05:04:38,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:38" (2/3) ... [2020-10-16 05:04:38,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3ec095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:38, skipping insertion in model container [2020-10-16 05:04:38,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:38" (3/3) ... [2020-10-16 05:04:38,516 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-16 05:04:38,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:04:38,535 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:04:38,536 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:04:38,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,586 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,590 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,591 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,591 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,618 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,619 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,619 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,619 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:38,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:04:38,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:04:38,655 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:04:38,655 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:04:38,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:04:38,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:04:38,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:04:38,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:04:38,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:04:38,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:04:38,716 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:04:38,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:38,722 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:04:38,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:04:38,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:04:38,731 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:04:38,734 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:04:38,737 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:04:38,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:04:38,757 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:04:38,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:38,758 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:04:38,760 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:04:40,124 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 05:04:40,125 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 05:04:40,129 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1400 [2020-10-16 05:04:40,146 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 05:04:40,146 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:40,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,147 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 05:04:40,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903664262] [2020-10-16 05:04:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:40,380 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 05:04:40,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903664262] [2020-10-16 05:04:40,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:40,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:40,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372609720] [2020-10-16 05:04:40,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:40,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:40,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:40,414 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 05:04:40,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:04:40,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:40,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 05:04:40,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:40,438 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:04:40,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:40,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:04:40,440 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:04:40,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:04:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:04:40,457 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 05:04:40,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:40,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:40,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:40,475 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:40,477 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:04:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:04:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:04:40,484 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:04:40,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:04:40,488 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:04:40,488 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:04:40,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:40,489 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,489 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:04:40,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash -71690202, now seen corresponding path program 1 times [2020-10-16 05:04:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877766860] [2020-10-16 05:04:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:40,602 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 05:04:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877766860] [2020-10-16 05:04:40,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:40,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:40,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537501790] [2020-10-16 05:04:40,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:40,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:40,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:40,613 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 05:04:40,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:04:40,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:40,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 05:04:40,615 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:40,665 INFO L129 PetriNetUnfolder]: 13/56 cut-off events. [2020-10-16 05:04:40,665 INFO L130 PetriNetUnfolder]: For 12/17 co-relation queries the response was YES. [2020-10-16 05:04:40,666 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 56 events. 13/56 cut-off events. For 12/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 197 event pairs, 1 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 106. Up to 17 conditions per place. [2020-10-16 05:04:40,667 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-10-16 05:04:40,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 79 flow [2020-10-16 05:04:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2020-10-16 05:04:40,671 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 05:04:40,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2020-10-16 05:04:40,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2020-10-16 05:04:40,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:40,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2020-10-16 05:04:40,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:40,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:40,676 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:40,676 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 372 transitions. [2020-10-16 05:04:40,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 79 flow [2020-10-16 05:04:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:40,678 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:40,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:04:40,679 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:40,680 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:40,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:40,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,680 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:04:40,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2072831054, now seen corresponding path program 1 times [2020-10-16 05:04:40,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194383734] [2020-10-16 05:04:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:40,743 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 05:04:40,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194383734] [2020-10-16 05:04:40,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:40,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:40,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345453577] [2020-10-16 05:04:40,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:40,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:40,751 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 05:04:40,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:04:40,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:40,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 05:04:40,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:40,804 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2020-10-16 05:04:40,804 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-16 05:04:40,805 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 40 events. 6/40 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 3 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 05:04:40,806 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 5 selfloop transitions, 2 changer transitions 4/22 dead transitions. [2020-10-16 05:04:40,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 94 flow [2020-10-16 05:04:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2020-10-16 05:04:40,810 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8342342342342343 [2020-10-16 05:04:40,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2020-10-16 05:04:40,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2020-10-16 05:04:40,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:40,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2020-10-16 05:04:40,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:40,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:40,815 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:40,815 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 5 states and 463 transitions. [2020-10-16 05:04:40,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 94 flow [2020-10-16 05:04:40,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 80 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:40,817 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 58 flow [2020-10-16 05:04:40,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:04:40,818 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:04:40,818 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 58 flow [2020-10-16 05:04:40,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:40,818 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:04:40,819 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,819 INFO L82 PathProgramCache]: Analyzing trace with hash -450986952, now seen corresponding path program 1 times [2020-10-16 05:04:40,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210369272] [2020-10-16 05:04:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:40,875 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 05:04:40,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210369272] [2020-10-16 05:04:40,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:40,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:40,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949106109] [2020-10-16 05:04:40,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:40,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:40,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:40,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:40,879 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 05:04:40,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 58 flow. Second operand 3 states. [2020-10-16 05:04:40,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:40,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 05:04:40,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:40,888 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:04:40,888 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2020-10-16 05:04:40,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 17 events. 0/17 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:04:40,889 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:04:40,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 17 transitions, 64 flow [2020-10-16 05:04:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:04:40,891 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 05:04:40,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:40,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:04:40,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:40,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:40,894 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:40,894 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 58 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:04:40,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 17 transitions, 64 flow [2020-10-16 05:04:40,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 56 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:40,895 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:40,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:04:40,896 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:40,896 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:40,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:40,896 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,897 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:04:40,897 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash -888052261, now seen corresponding path program 1 times [2020-10-16 05:04:40,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636544673] [2020-10-16 05:04:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:40,938 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 05:04:40,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636544673] [2020-10-16 05:04:40,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:40,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:40,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259868106] [2020-10-16 05:04:40,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:40,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:40,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:40,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:40,941 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 05:04:40,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:04:40,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:40,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 05:04:40,942 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:40,970 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:04:40,971 INFO L130 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2020-10-16 05:04:40,971 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 0/22 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:04:40,972 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:04:40,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 73 flow [2020-10-16 05:04:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2020-10-16 05:04:40,974 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8265765765765766 [2020-10-16 05:04:40,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2020-10-16 05:04:40,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2020-10-16 05:04:40,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:40,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2020-10-16 05:04:40,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:40,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:40,977 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:40,977 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 367 transitions. [2020-10-16 05:04:40,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 73 flow [2020-10-16 05:04:40,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 18 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:40,979 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 68 flow [2020-10-16 05:04:40,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:04:40,979 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:04:40,980 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 68 flow [2020-10-16 05:04:40,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:40,980 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:40,980 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:40,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:04:40,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1362611835, now seen corresponding path program 1 times [2020-10-16 05:04:40,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:40,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164150738] [2020-10-16 05:04:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:41,091 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 05:04:41,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164150738] [2020-10-16 05:04:41,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:41,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:41,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259721201] [2020-10-16 05:04:41,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:41,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:41,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:41,096 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:04:41,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 68 flow. Second operand 4 states. [2020-10-16 05:04:41,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:41,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:04:41,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:41,143 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:04:41,143 INFO L130 PetriNetUnfolder]: For 124/134 co-relation queries the response was YES. [2020-10-16 05:04:41,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 69 events. 28/69 cut-off events. For 124/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 205 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 165. Up to 45 conditions per place. [2020-10-16 05:04:41,145 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:04:41,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 120 flow [2020-10-16 05:04:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2020-10-16 05:04:41,147 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7711711711711712 [2020-10-16 05:04:41,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2020-10-16 05:04:41,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2020-10-16 05:04:41,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:41,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2020-10-16 05:04:41,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:41,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:41,150 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:41,151 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 68 flow. Second operand 5 states and 428 transitions. [2020-10-16 05:04:41,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 120 flow [2020-10-16 05:04:41,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 05:04:41,153 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 05:04:41,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:04:41,154 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:04:41,154 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 05:04:41,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:41,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:41,154 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:41,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:04:41,155 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:41,155 INFO L82 PathProgramCache]: Analyzing trace with hash -936763998, now seen corresponding path program 1 times [2020-10-16 05:04:41,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:41,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155106602] [2020-10-16 05:04:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:41,221 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 05:04:41,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155106602] [2020-10-16 05:04:41,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:41,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:41,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532109592] [2020-10-16 05:04:41,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:04:41,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:41,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:04:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:04:41,225 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:04:41,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 05:04:41,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:41,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:04:41,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:41,280 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:04:41,281 INFO L130 PetriNetUnfolder]: For 75/119 co-relation queries the response was YES. [2020-10-16 05:04:41,281 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 75/119 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 05:04:41,282 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:04:41,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 05:04:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:04:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:04:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 05:04:41,285 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2020-10-16 05:04:41,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 05:04:41,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 05:04:41,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:41,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 05:04:41,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:04:41,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:04:41,288 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:04:41,288 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 513 transitions. [2020-10-16 05:04:41,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 05:04:41,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:41,291 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 05:04:41,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 05:04:41,292 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:04:41,292 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 05:04:41,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:04:41,292 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:41,292 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:41,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:04:41,293 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:41,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1345081989, now seen corresponding path program 1 times [2020-10-16 05:04:41,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:41,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465578164] [2020-10-16 05:04:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:41,358 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 05:04:41,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465578164] [2020-10-16 05:04:41,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:41,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:04:41,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255488492] [2020-10-16 05:04:41,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:04:41,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:04:41,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:04:41,361 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:04:41,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 05:04:41,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:41,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:04:41,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:41,428 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:04:41,428 INFO L130 PetriNetUnfolder]: For 98/137 co-relation queries the response was YES. [2020-10-16 05:04:41,428 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 98/137 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 05:04:41,429 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:04:41,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 05:04:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2020-10-16 05:04:41,432 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2020-10-16 05:04:41,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2020-10-16 05:04:41,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2020-10-16 05:04:41,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:41,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2020-10-16 05:04:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:41,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:41,436 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:41,436 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 592 transitions. [2020-10-16 05:04:41,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 05:04:41,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:41,439 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 05:04:41,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:04:41,440 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:04:41,440 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 05:04:41,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:04:41,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:41,441 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 05:04:41,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:04:41,441 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:41,441 INFO L82 PathProgramCache]: Analyzing trace with hash 159865127, now seen corresponding path program 1 times [2020-10-16 05:04:41,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:41,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047216153] [2020-10-16 05:04:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:41,478 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 05:04:41,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047216153] [2020-10-16 05:04:41,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:41,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:41,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736392897] [2020-10-16 05:04:41,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:41,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:41,481 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2020-10-16 05:04:41,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 05:04:41,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:41,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2020-10-16 05:04:41,482 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:41,501 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 05:04:41,501 INFO L130 PetriNetUnfolder]: For 48/58 co-relation queries the response was YES. [2020-10-16 05:04:41,501 INFO L80 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 25 events. 5/25 cut-off events. For 48/58 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 81. Up to 11 conditions per place. [2020-10-16 05:04:41,502 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:04:41,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 138 flow [2020-10-16 05:04:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 05:04:41,504 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8153153153153153 [2020-10-16 05:04:41,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 05:04:41,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 05:04:41,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:41,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 05:04:41,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:41,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:41,507 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:41,507 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states and 362 transitions. [2020-10-16 05:04:41,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 138 flow [2020-10-16 05:04:41,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 104 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 05:04:41,509 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 05:04:41,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 05:04:41,509 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:04:41,509 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 05:04:41,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:41,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:04:41,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:04:41 BasicIcfg [2020-10-16 05:04:41,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:04:41,516 INFO L168 Benchmark]: Toolchain (without parser) took 4194.79 ms. Allocated memory was 247.5 MB in the beginning and 365.4 MB in the end (delta: 118.0 MB). Free memory was 203.2 MB in the beginning and 232.0 MB in the end (delta: -28.8 MB). Peak memory consumption was 89.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,517 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:41,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.43 ms. Allocated memory was 247.5 MB in the beginning and 302.0 MB in the end (delta: 54.5 MB). Free memory was 203.2 MB in the beginning and 255.2 MB in the end (delta: -52.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 302.0 MB. Free memory was 255.2 MB in the beginning and 252.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,520 INFO L168 Benchmark]: Boogie Preprocessor took 26.50 ms. Allocated memory is still 302.0 MB. Free memory was 252.7 MB in the beginning and 250.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,520 INFO L168 Benchmark]: RCFGBuilder took 410.33 ms. Allocated memory is still 302.0 MB. Free memory was 250.2 MB in the beginning and 228.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,521 INFO L168 Benchmark]: TraceAbstraction took 3004.48 ms. Allocated memory was 302.0 MB in the beginning and 365.4 MB in the end (delta: 63.4 MB). Free memory was 228.3 MB in the beginning and 232.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:41,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 696.43 ms. Allocated memory was 247.5 MB in the beginning and 302.0 MB in the end (delta: 54.5 MB). Free memory was 203.2 MB in the beginning and 255.2 MB in the end (delta: -52.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 302.0 MB. Free memory was 255.2 MB in the beginning and 252.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.50 ms. Allocated memory is still 302.0 MB. Free memory was 252.7 MB in the beginning and 250.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 410.33 ms. Allocated memory is still 302.0 MB. Free memory was 250.2 MB in the beginning and 228.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3004.48 ms. Allocated memory was 302.0 MB in the beginning and 365.4 MB in the end (delta: 63.4 MB). Free memory was 228.3 MB in the beginning and 232.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 561 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 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 4 procedures, 69 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: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 33 SDtfs, 21 SDslu, 18 SDs, 0 SdLazy, 129 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=8, 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, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...