/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:07:33,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:07:33,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:07:33,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:07:33,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:07:33,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:07:33,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:07:33,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:07:33,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:07:33,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:07:34,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:07:34,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:07:34,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:07:34,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:07:34,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:07:34,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:07:34,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:07:34,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:07:34,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:07:34,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:07:34,049 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:07:34,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:07:34,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:07:34,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:07:34,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:07:34,106 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:07:34,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:07:34,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:07:34,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:07:34,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:07:34,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:07:34,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:07:34,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:07:34,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:07:34,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:07:34,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:07:34,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:07:34,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:07:34,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:07:34,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:07:34,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:07:34,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:07:34,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:07:34,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:07:34,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:07:34,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:07:34,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:07:34,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:07:34,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:07:34,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:07:34,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:07:34,112 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:07:34,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:07:34,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:07:34,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:07:34,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:07:34,508 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:07:34,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-04-29 00:07:34,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d418db7a5/bc3b04be0d2a44c4973c80fbe52ab01e/FLAG5d35ec108 [2021-04-29 00:07:35,347 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:07:35,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-04-29 00:07:35,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d418db7a5/bc3b04be0d2a44c4973c80fbe52ab01e/FLAG5d35ec108 [2021-04-29 00:07:35,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d418db7a5/bc3b04be0d2a44c4973c80fbe52ab01e [2021-04-29 00:07:35,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:07:35,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:07:35,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:07:35,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:07:35,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:07:35,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:07:35" (1/1) ... [2021-04-29 00:07:35,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d820214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:35, skipping insertion in model container [2021-04-29 00:07:35,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:07:35" (1/1) ... [2021-04-29 00:07:35,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:07:35,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:07:35,978 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i[950,963] [2021-04-29 00:07:36,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:07:36,191 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:07:36,210 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i[950,963] [2021-04-29 00:07:36,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:07:36,442 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:07:36,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36 WrapperNode [2021-04-29 00:07:36,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:07:36,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:07:36,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:07:36,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:07:36,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:07:36,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:07:36,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:07:36,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:07:36,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (1/1) ... [2021-04-29 00:07:36,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:07:36,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:07:36,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:07:36,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:07:36,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (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 [2021-04-29 00:07:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:07:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:07:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:07:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:07:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:07:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:07:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:07:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:07:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:07:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:07:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:07:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:07:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:07:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:07:36,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:07:37,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:07:37,107 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:07:37,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:07:37 BoogieIcfgContainer [2021-04-29 00:07:37,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:07:37,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:07:37,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:07:37,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:07:37,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:07:35" (1/3) ... [2021-04-29 00:07:37,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570469ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:07:37, skipping insertion in model container [2021-04-29 00:07:37,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:36" (2/3) ... [2021-04-29 00:07:37,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570469ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:07:37, skipping insertion in model container [2021-04-29 00:07:37,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:07:37" (3/3) ... [2021-04-29 00:07:37,125 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2021-04-29 00:07:37,133 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:07:37,140 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:07:37,141 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:07:37,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:37,212 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:07:37,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:07:37,266 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:07:37,266 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:07:37,267 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:07:37,267 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:07:37,267 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:07:37,267 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:07:37,267 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:07:37,267 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:07:37,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-04-29 00:07:37,328 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-04-29 00:07:37,328 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:37,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-04-29 00:07:37,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-04-29 00:07:37,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:37,340 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:37,357 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:37,362 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:37,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:37,383 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-04-29 00:07:37,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:37,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-04-29 00:07:37,387 INFO L146 LiptonReduction]: Number of co-enabled transitions 804 [2021-04-29 00:07:41,218 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:07:41,406 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:07:41,565 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:07:41,726 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:07:42,723 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:07:43,790 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:07:44,063 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:07:44,554 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:07:44,823 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:07:45,405 INFO L158 LiptonReduction]: Checked pairs total: 5311 [2021-04-29 00:07:45,405 INFO L160 LiptonReduction]: Total number of compositions: 90 [2021-04-29 00:07:45,409 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8070 [2021-04-29 00:07:45,431 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-04-29 00:07:45,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:45,431 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:45,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:45,432 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash -541709222, now seen corresponding path program 1 times [2021-04-29 00:07:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:45,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820207604] [2021-04-29 00:07:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:45,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:45,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820207604] [2021-04-29 00:07:45,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:45,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:07:45,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398396905] [2021-04-29 00:07:45,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:07:45,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:07:45,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:07:45,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 164 [2021-04-29 00:07:45,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:45,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:45,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 164 [2021-04-29 00:07:45,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:45,940 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-04-29 00:07:45,941 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:45,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 359 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 76. Up to 18 conditions per place. [2021-04-29 00:07:45,943 INFO L132 encePairwiseOnDemand]: 148/164 looper letters, 1 selfloop transitions, 2 changer transitions 48/72 dead transitions. [2021-04-29 00:07:45,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 205 flow [2021-04-29 00:07:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:07:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:07:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2021-04-29 00:07:45,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8130081300813008 [2021-04-29 00:07:45,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2021-04-29 00:07:45,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2021-04-29 00:07:45,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:45,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2021-04-29 00:07:45,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:45,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:45,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:45,983 INFO L185 Difference]: Start difference. First operand has 77 places, 67 transitions, 143 flow. Second operand 3 states and 400 transitions. [2021-04-29 00:07:45,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 205 flow [2021-04-29 00:07:45,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:07:45,991 INFO L241 Difference]: Finished difference. Result has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:45,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=77, PETRI_TRANSITIONS=24} [2021-04-29 00:07:45,994 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2021-04-29 00:07:45,995 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:45,995 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:45,995 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:45,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 62 flow [2021-04-29 00:07:46,000 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-04-29 00:07:46,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:46,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:46,002 INFO L146 LiptonReduction]: Number of co-enabled transitions 292 [2021-04-29 00:07:46,050 INFO L158 LiptonReduction]: Checked pairs total: 304 [2021-04-29 00:07:46,051 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:46,051 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-04-29 00:07:46,053 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2021-04-29 00:07:46,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:46,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:46,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:07:46,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:46,055 INFO L82 PathProgramCache]: Analyzing trace with hash 386881936, now seen corresponding path program 1 times [2021-04-29 00:07:46,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:46,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124952325] [2021-04-29 00:07:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:46,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:46,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124952325] [2021-04-29 00:07:46,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:46,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:07:46,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660750019] [2021-04-29 00:07:46,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:07:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:07:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:07:46,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 164 [2021-04-29 00:07:46,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:46,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 164 [2021-04-29 00:07:46,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:46,135 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-04-29 00:07:46,135 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 00:07:46,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 24 events. 0/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 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. [2021-04-29 00:07:46,135 INFO L132 encePairwiseOnDemand]: 161/164 looper letters, 1 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2021-04-29 00:07:46,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 24 transitions, 68 flow [2021-04-29 00:07:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:07:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:07:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-04-29 00:07:46,139 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782520325203252 [2021-04-29 00:07:46,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-04-29 00:07:46,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-04-29 00:07:46,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:46,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-04-29 00:07:46,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,145 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 3 states and 385 transitions. [2021-04-29 00:07:46,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 24 transitions, 68 flow [2021-04-29 00:07:46,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:46,146 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:46,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-04-29 00:07:46,147 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -42 predicate places. [2021-04-29 00:07:46,147 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:46,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:46,148 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:46,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 64 flow [2021-04-29 00:07:46,153 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-29 00:07:46,153 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 00:07:46,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 23 events. 0/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 40 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:46,154 INFO L146 LiptonReduction]: Number of co-enabled transitions 266 [2021-04-29 00:07:46,157 INFO L158 LiptonReduction]: Checked pairs total: 267 [2021-04-29 00:07:46,157 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:46,157 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-04-29 00:07:46,159 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 64 flow [2021-04-29 00:07:46,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:46,159 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:46,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:07:46,160 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash -891563145, now seen corresponding path program 1 times [2021-04-29 00:07:46,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:46,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953503668] [2021-04-29 00:07:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:46,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,253 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:07:46,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953503668] [2021-04-29 00:07:46,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:46,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:46,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894837482] [2021-04-29 00:07:46,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:07:46,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:46,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:07:46,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:07:46,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 164 [2021-04-29 00:07:46,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:46,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 164 [2021-04-29 00:07:46,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:46,299 INFO L129 PetriNetUnfolder]: 4/46 cut-off events. [2021-04-29 00:07:46,299 INFO L130 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2021-04-29 00:07:46,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 46 events. 4/46 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 161 event pairs, 3 based on Foata normal form. 5/34 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2021-04-29 00:07:46,300 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 3 selfloop transitions, 3 changer transitions 3/26 dead transitions. [2021-04-29 00:07:46,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 89 flow [2021-04-29 00:07:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:07:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:07:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2021-04-29 00:07:46,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6814024390243902 [2021-04-29 00:07:46,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2021-04-29 00:07:46,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2021-04-29 00:07:46,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:46,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2021-04-29 00:07:46,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,309 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 64 flow. Second operand 4 states and 447 transitions. [2021-04-29 00:07:46,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 89 flow [2021-04-29 00:07:46,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:46,311 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:46,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-04-29 00:07:46,311 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -40 predicate places. [2021-04-29 00:07:46,311 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:46,311 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:46,312 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:46,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:46,316 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-29 00:07:46,317 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 00:07:46,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 23 events. 0/23 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:46,317 INFO L146 LiptonReduction]: Number of co-enabled transitions 204 [2021-04-29 00:07:46,337 INFO L158 LiptonReduction]: Checked pairs total: 159 [2021-04-29 00:07:46,337 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:46,337 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 00:07:46,339 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:46,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,340 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:46,340 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:46,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:07:46,340 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1895319952, now seen corresponding path program 1 times [2021-04-29 00:07:46,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:46,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42209912] [2021-04-29 00:07:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:46,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:46,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42209912] [2021-04-29 00:07:46,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:46,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:07:46,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330809446] [2021-04-29 00:07:46,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:46,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:46,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 164 [2021-04-29 00:07:46,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:46,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 164 [2021-04-29 00:07:46,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:46,418 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-04-29 00:07:46,419 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-04-29 00:07:46,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 47 events. 2/47 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 149 event pairs, 1 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2021-04-29 00:07:46,420 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 2 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2021-04-29 00:07:46,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 97 flow [2021-04-29 00:07:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:07:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:07:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2021-04-29 00:07:46,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7286585365853658 [2021-04-29 00:07:46,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2021-04-29 00:07:46,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2021-04-29 00:07:46,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:46,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2021-04-29 00:07:46,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,428 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 74 flow. Second operand 4 states and 478 transitions. [2021-04-29 00:07:46,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 97 flow [2021-04-29 00:07:46,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 78 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-04-29 00:07:46,430 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:46,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2021-04-29 00:07:46,430 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -41 predicate places. [2021-04-29 00:07:46,430 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:46,431 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:46,431 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:46,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 22 transitions, 68 flow [2021-04-29 00:07:46,435 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-29 00:07:46,436 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 00:07:46,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 22 events. 0/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:46,436 INFO L146 LiptonReduction]: Number of co-enabled transitions 154 [2021-04-29 00:07:46,453 INFO L158 LiptonReduction]: Checked pairs total: 92 [2021-04-29 00:07:46,453 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:46,454 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-04-29 00:07:46,455 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 68 flow [2021-04-29 00:07:46,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:46,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:46,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:07:46,456 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2095607142, now seen corresponding path program 1 times [2021-04-29 00:07:46,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:46,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262660595] [2021-04-29 00:07:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:46,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,520 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:46,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:46,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262660595] [2021-04-29 00:07:46,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:46,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:07:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754172451] [2021-04-29 00:07:46,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:46,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:46,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:46,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:46,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 164 [2021-04-29 00:07:46,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:46,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 164 [2021-04-29 00:07:46,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:46,668 INFO L129 PetriNetUnfolder]: 432/696 cut-off events. [2021-04-29 00:07:46,668 INFO L130 PetriNetUnfolder]: For 671/720 co-relation queries the response was YES. [2021-04-29 00:07:46,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 696 events. 432/696 cut-off events. For 671/720 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 3820 event pairs, 216 based on Foata normal form. 63/355 useless extension candidates. Maximal degree in co-relation 1578. Up to 541 conditions per place. [2021-04-29 00:07:46,715 INFO L132 encePairwiseOnDemand]: 152/164 looper letters, 11 selfloop transitions, 10 changer transitions 19/50 dead transitions. [2021-04-29 00:07:46,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 204 flow [2021-04-29 00:07:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:07:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:07:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2021-04-29 00:07:46,718 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2021-04-29 00:07:46,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2021-04-29 00:07:46,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2021-04-29 00:07:46,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:46,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2021-04-29 00:07:46,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,724 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 68 flow. Second operand 5 states and 572 transitions. [2021-04-29 00:07:46,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 204 flow [2021-04-29 00:07:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 192 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-04-29 00:07:46,730 INFO L241 Difference]: Finished difference. Result has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:46,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2021-04-29 00:07:46,731 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -39 predicate places. [2021-04-29 00:07:46,731 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:46,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:46,731 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:46,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 146 flow [2021-04-29 00:07:46,786 INFO L129 PetriNetUnfolder]: 351/551 cut-off events. [2021-04-29 00:07:46,786 INFO L130 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2021-04-29 00:07:46,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 551 events. 351/551 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 2739 event pairs, 189 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 1636. Up to 478 conditions per place. [2021-04-29 00:07:46,793 INFO L146 LiptonReduction]: Number of co-enabled transitions 86 [2021-04-29 00:07:46,927 INFO L158 LiptonReduction]: Checked pairs total: 172 [2021-04-29 00:07:46,928 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 00:07:46,928 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 197 [2021-04-29 00:07:46,929 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 153 flow [2021-04-29 00:07:46,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:46,930 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:46,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:07:46,931 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:46,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1066178870, now seen corresponding path program 1 times [2021-04-29 00:07:46,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:46,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088175447] [2021-04-29 00:07:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:46,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:46,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:46,985 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:46,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:46,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088175447] [2021-04-29 00:07:46,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:46,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:46,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583138277] [2021-04-29 00:07:46,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:07:46,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:46,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:07:46,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:07:46,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 168 [2021-04-29 00:07:46,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:46,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:46,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 168 [2021-04-29 00:07:46,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:47,149 INFO L129 PetriNetUnfolder]: 342/652 cut-off events. [2021-04-29 00:07:47,150 INFO L130 PetriNetUnfolder]: For 640/1048 co-relation queries the response was YES. [2021-04-29 00:07:47,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 652 events. 342/652 cut-off events. For 640/1048 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 3871 event pairs, 54 based on Foata normal form. 88/386 useless extension candidates. Maximal degree in co-relation 2526. Up to 562 conditions per place. [2021-04-29 00:07:47,156 INFO L132 encePairwiseOnDemand]: 153/168 looper letters, 11 selfloop transitions, 19 changer transitions 20/60 dead transitions. [2021-04-29 00:07:47,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 417 flow [2021-04-29 00:07:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:07:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:07:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2021-04-29 00:07:47,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6875 [2021-04-29 00:07:47,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2021-04-29 00:07:47,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2021-04-29 00:07:47,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:47,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2021-04-29 00:07:47,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,165 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 153 flow. Second operand 6 states and 693 transitions. [2021-04-29 00:07:47,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 417 flow [2021-04-29 00:07:47,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 405 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:47,174 INFO L241 Difference]: Finished difference. Result has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:47,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2021-04-29 00:07:47,174 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -34 predicate places. [2021-04-29 00:07:47,174 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:47,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:47,175 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:47,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 290 flow [2021-04-29 00:07:47,229 INFO L129 PetriNetUnfolder]: 252/479 cut-off events. [2021-04-29 00:07:47,229 INFO L130 PetriNetUnfolder]: For 753/873 co-relation queries the response was YES. [2021-04-29 00:07:47,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 479 events. 252/479 cut-off events. For 753/873 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 2618 event pairs, 54 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 2164. Up to 394 conditions per place. [2021-04-29 00:07:47,235 INFO L146 LiptonReduction]: Number of co-enabled transitions 62 [2021-04-29 00:07:47,365 INFO L158 LiptonReduction]: Checked pairs total: 177 [2021-04-29 00:07:47,365 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 00:07:47,366 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 192 [2021-04-29 00:07:47,367 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 300 flow [2021-04-29 00:07:47,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:47,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:47,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:07:47,368 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash -820734932, now seen corresponding path program 1 times [2021-04-29 00:07:47,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:47,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812569586] [2021-04-29 00:07:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:47,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:47,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:47,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:47,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:47,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:47,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:47,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:47,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:47,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812569586] [2021-04-29 00:07:47,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:47,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:07:47,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046212597] [2021-04-29 00:07:47,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:07:47,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:47,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:07:47,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:07:47,433 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 171 [2021-04-29 00:07:47,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:47,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 171 [2021-04-29 00:07:47,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:47,588 INFO L129 PetriNetUnfolder]: 153/422 cut-off events. [2021-04-29 00:07:47,588 INFO L130 PetriNetUnfolder]: For 893/1076 co-relation queries the response was YES. [2021-04-29 00:07:47,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 422 events. 153/422 cut-off events. For 893/1076 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 2821 event pairs, 0 based on Foata normal form. 81/304 useless extension candidates. Maximal degree in co-relation 2135. Up to 346 conditions per place. [2021-04-29 00:07:47,591 INFO L132 encePairwiseOnDemand]: 153/171 looper letters, 2 selfloop transitions, 28 changer transitions 12/51 dead transitions. [2021-04-29 00:07:47,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 476 flow [2021-04-29 00:07:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:07:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:07:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2021-04-29 00:07:47,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2021-04-29 00:07:47,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2021-04-29 00:07:47,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2021-04-29 00:07:47,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:47,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2021-04-29 00:07:47,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,604 INFO L185 Difference]: Start difference. First operand has 41 places, 41 transitions, 300 flow. Second operand 7 states and 791 transitions. [2021-04-29 00:07:47,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 476 flow [2021-04-29 00:07:47,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 380 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-04-29 00:07:47,618 INFO L241 Difference]: Finished difference. Result has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:47,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2021-04-29 00:07:47,619 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -31 predicate places. [2021-04-29 00:07:47,619 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:47,619 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:47,620 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:47,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 295 flow [2021-04-29 00:07:47,645 INFO L129 PetriNetUnfolder]: 81/223 cut-off events. [2021-04-29 00:07:47,645 INFO L130 PetriNetUnfolder]: For 334/352 co-relation queries the response was YES. [2021-04-29 00:07:47,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 223 events. 81/223 cut-off events. For 334/352 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1209 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 972. Up to 163 conditions per place. [2021-04-29 00:07:47,648 INFO L146 LiptonReduction]: Number of co-enabled transitions 40 [2021-04-29 00:07:47,866 INFO L158 LiptonReduction]: Checked pairs total: 54 [2021-04-29 00:07:47,866 INFO L160 LiptonReduction]: Total number of compositions: 9 [2021-04-29 00:07:47,866 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 247 [2021-04-29 00:07:47,868 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 295 flow [2021-04-29 00:07:47,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:47,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:47,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:07:47,869 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:47,869 INFO L82 PathProgramCache]: Analyzing trace with hash -562604228, now seen corresponding path program 1 times [2021-04-29 00:07:47,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:47,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50338156] [2021-04-29 00:07:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:47,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:47,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:07:47,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:47,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:47,908 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:07:47,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:47,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50338156] [2021-04-29 00:07:47,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:47,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:47,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690673326] [2021-04-29 00:07:47,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:47,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:47,919 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 180 [2021-04-29 00:07:47,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:47,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 180 [2021-04-29 00:07:47,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:47,985 INFO L129 PetriNetUnfolder]: 81/196 cut-off events. [2021-04-29 00:07:47,985 INFO L130 PetriNetUnfolder]: For 460/507 co-relation queries the response was YES. [2021-04-29 00:07:47,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 196 events. 81/196 cut-off events. For 460/507 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 952 event pairs, 0 based on Foata normal form. 30/121 useless extension candidates. Maximal degree in co-relation 916. Up to 163 conditions per place. [2021-04-29 00:07:47,986 INFO L132 encePairwiseOnDemand]: 160/180 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2021-04-29 00:07:47,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 325 flow [2021-04-29 00:07:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:07:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:07:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2021-04-29 00:07:47,989 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6233333333333333 [2021-04-29 00:07:47,989 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2021-04-29 00:07:47,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2021-04-29 00:07:47,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:47,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2021-04-29 00:07:47,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:47,995 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 295 flow. Second operand 5 states and 561 transitions. [2021-04-29 00:07:47,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 325 flow [2021-04-29 00:07:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 231 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-04-29 00:07:47,999 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:47,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2021-04-29 00:07:47,999 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -37 predicate places. [2021-04-29 00:07:48,000 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:48,000 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:48,000 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:48,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:07:48,000 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:07:48,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:48,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:07:48,001 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:07:48,001 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:07:48,001 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:48,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-29 00:07:48,002 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:07:48,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:48,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:07:48,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:07:48 BasicIcfg [2021-04-29 00:07:48,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:07:48,009 INFO L168 Benchmark]: Toolchain (without parser) took 12411.01 ms. Allocated memory was 312.5 MB in the beginning and 486.5 MB in the end (delta: 174.1 MB). Free memory was 287.2 MB in the beginning and 194.6 MB in the end (delta: 92.6 MB). Peak memory consumption was 268.4 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:48,009 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 312.5 MB. Free memory is still 282.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:07:48,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.80 ms. Allocated memory is still 312.5 MB. Free memory was 284.1 MB in the beginning and 292.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:48,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 312.5 MB. Free memory was 292.6 MB in the beginning and 290.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:07:48,010 INFO L168 Benchmark]: Boogie Preprocessor took 60.06 ms. Allocated memory is still 312.5 MB. Free memory was 290.7 MB in the beginning and 289.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:07:48,011 INFO L168 Benchmark]: RCFGBuilder took 534.05 ms. Allocated memory is still 312.5 MB. Free memory was 289.7 MB in the beginning and 266.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:48,011 INFO L168 Benchmark]: TraceAbstraction took 10892.45 ms. Allocated memory was 312.5 MB in the beginning and 486.5 MB in the end (delta: 174.1 MB). Free memory was 266.6 MB in the beginning and 194.6 MB in the end (delta: 72.0 MB). Peak memory consumption was 248.2 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:48,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 312.5 MB. Free memory is still 282.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 787.80 ms. Allocated memory is still 312.5 MB. Free memory was 284.1 MB in the beginning and 292.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 312.5 MB. Free memory was 292.6 MB in the beginning and 290.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.06 ms. Allocated memory is still 312.5 MB. Free memory was 290.7 MB in the beginning and 289.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 534.05 ms. Allocated memory is still 312.5 MB. Free memory was 289.7 MB in the beginning and 266.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10892.45 ms. Allocated memory was 312.5 MB in the beginning and 486.5 MB in the end (delta: 174.1 MB). Free memory was 266.6 MB in the beginning and 194.6 MB in the end (delta: 72.0 MB). Peak memory consumption was 248.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8043.6ms, 68 PlacesBefore, 77 PlacesAfterwards, 59 TransitionsBefore, 67 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 5311 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1443, positive: 1283, positive conditional: 1283, positive unconditional: 0, negative: 160, negative conditional: 160, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 782, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 782, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 782, positive: 697, positive conditional: 0, positive unconditional: 697, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 85, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 422, positive: 149, positive conditional: 0, positive unconditional: 149, negative: 273, negative conditional: 0, negative unconditional: 273, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1443, positive: 560, positive conditional: 560, positive unconditional: 0, negative: 101, negative conditional: 101, negative unconditional: 0, unknown: 782, unknown conditional: 782, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 777, Positive cache size: 718, Positive conditional cache size: 718, Positive unconditional cache size: 0, Negative cache size: 59, Negative conditional cache size: 59, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.3ms, 77 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 292 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 99, positive conditional: 99, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 19, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 19, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 82, positive conditional: 82, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 19, unknown conditional: 19, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 796, Positive cache size: 735, Positive conditional cache size: 735, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8ms, 35 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 266 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 267 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 110, positive: 91, positive conditional: 91, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 110, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 797, Positive cache size: 736, Positive conditional cache size: 736, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.3ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 204 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 65, positive: 52, positive conditional: 52, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 3, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 3, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 65, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 814, Positive cache size: 753, Positive conditional cache size: 753, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.5ms, 36 PlacesBefore, 35 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 92 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 13, positive conditional: 4, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 13, positive conditional: 4, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 43, positive conditional: 43, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 828, Positive cache size: 766, Positive conditional cache size: 766, Positive unconditional cache size: 0, Negative cache size: 62, Negative conditional cache size: 62, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 196.4ms, 38 PlacesBefore, 37 PlacesAfterwards, 31 TransitionsBefore, 32 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 106, positive: 94, positive conditional: 94, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 25, positive conditional: 20, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 25, positive conditional: 20, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 106, positive: 69, positive conditional: 69, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 854, Positive cache size: 791, Positive conditional cache size: 791, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 190.6ms, 43 PlacesBefore, 41 PlacesAfterwards, 40 TransitionsBefore, 41 TransitionsAfterwards, 62 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 6, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 6, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 42, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 862, Positive cache size: 798, Positive conditional cache size: 798, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 246.3ms, 46 PlacesBefore, 42 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 54 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 54, positive conditional: 54, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 54, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 868, Positive cache size: 804, Positive conditional cache size: 804, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 40 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 868, Positive cache size: 804, Positive conditional cache size: 804, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10742.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 915.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8150.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 49 SDslu, 14 SDs, 0 SdLazy, 302 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 230.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=6, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.2ms SsaConstructionTime, 173.1ms SatisfiabilityAnalysisTime, 487.4ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...