/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 15:51:41,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 15:51:41,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 15:51:41,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 15:51:41,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 15:51:41,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 15:51:41,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 15:51:41,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 15:51:41,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 15:51:41,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 15:51:41,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 15:51:41,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 15:51:41,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 15:51:41,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 15:51:41,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 15:51:41,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 15:51:41,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 15:51:41,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 15:51:41,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 15:51:41,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 15:51:41,378 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-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 15:51:41,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 15:51:41,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 15:51:41,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 15:51:41,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 15:51:41,415 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 15:51:41,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 15:51:41,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 15:51:41,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 15:51:41,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 15:51:41,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 15:51:41,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 15:51:41,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 15:51:41,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 15:51:41,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 15:51:41,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 15:51:41,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 15:51:41,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 15:51:41,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 15:51:41,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 15:51:41,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 15:51:41,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 15:51:41,420 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 15:51:41,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 15:51:41,421 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 15:51:41,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 15:51:41,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 15:51:41,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 15:51:41,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 15:51:41,784 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 15:51:41,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-08-13 15:51:41,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0376db/06d78ee827964dcab8c395d7a9beeb92/FLAGb75252cb8 [2021-08-13 15:51:42,391 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 15:51:42,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-08-13 15:51:42,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0376db/06d78ee827964dcab8c395d7a9beeb92/FLAGb75252cb8 [2021-08-13 15:51:42,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0376db/06d78ee827964dcab8c395d7a9beeb92 [2021-08-13 15:51:42,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 15:51:42,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 15:51:42,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 15:51:42,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 15:51:42,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 15:51:42,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 03:51:42" (1/1) ... [2021-08-13 15:51:42,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82d718f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:42, skipping insertion in model container [2021-08-13 15:51:42,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 03:51:42" (1/1) ... [2021-08-13 15:51:42,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 15:51:42,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 15:51:42,905 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-08-13 15:51:43,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 15:51:43,084 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 15:51:43,094 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-08-13 15:51:43,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 15:51:43,177 INFO L208 MainTranslator]: Completed translation [2021-08-13 15:51:43,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43 WrapperNode [2021-08-13 15:51:43,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 15:51:43,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 15:51:43,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 15:51:43,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 15:51:43,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 15:51:43,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 15:51:43,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 15:51:43,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 15:51:43,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (1/1) ... [2021-08-13 15:51:43,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 15:51:43,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 15:51:43,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 15:51:43,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 15:51:43,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (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 [2021-08-13 15:51:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 15:51:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 15:51:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 15:51:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 15:51:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 15:51:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 15:51:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 15:51:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 15:51:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 15:51:43,310 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 15:51:43,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 15:51:43,707 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 15:51:43,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 03:51:43 BoogieIcfgContainer [2021-08-13 15:51:43,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 15:51:43,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 15:51:43,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 15:51:43,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 15:51:43,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 03:51:42" (1/3) ... [2021-08-13 15:51:43,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cc4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 03:51:43, skipping insertion in model container [2021-08-13 15:51:43,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 03:51:43" (2/3) ... [2021-08-13 15:51:43,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cc4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 03:51:43, skipping insertion in model container [2021-08-13 15:51:43,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 03:51:43" (3/3) ... [2021-08-13 15:51:43,717 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-08-13 15:51:43,722 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 15:51:43,723 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 15:51:43,724 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 15:51:43,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 15:51:43,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 15:51:43,805 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 15:51:43,830 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 15:51:43,831 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 15:51:43,831 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 15:51:43,831 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 15:51:43,831 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 15:51:43,831 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 15:51:43,831 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 15:51:43,831 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 15:51:43,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 15:51:43,898 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 15:51:43,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 15:51:43,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 15:51:43,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 15:51:43,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 15:51:43,943 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 15:51:43,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 15:51:43,943 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:43,944 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:43,944 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1432389661, now seen corresponding path program 1 times [2021-08-13 15:51:43,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:43,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263527154] [2021-08-13 15:51:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:44,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:44,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:44,300 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 15:51:44,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 15:51:44,321 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 15:51:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 15:51:44,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:44,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:44,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:44,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:44,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263527154] [2021-08-13 15:51:44,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263527154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:44,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:44,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 15:51:44,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518792752] [2021-08-13 15:51:44,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 15:51:44,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:44,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 15:51:44,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 15:51:44,424 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2021-08-13 15:51:44,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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) [2021-08-13 15:51:44,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:44,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2021-08-13 15:51:44,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:44,807 INFO L129 PetriNetUnfolder]: 124/376 cut-off events. [2021-08-13 15:51:44,807 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 15:51:44,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 376 events. 124/376 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1773 event pairs, 12 based on Foata normal form. 17/378 useless extension candidates. Maximal degree in co-relation 591. Up to 73 conditions per place. [2021-08-13 15:51:44,811 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 17 selfloop transitions, 4 changer transitions 35/111 dead transitions. [2021-08-13 15:51:44,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 343 flow [2021-08-13 15:51:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 15:51:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 15:51:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 933 transitions. [2021-08-13 15:51:44,828 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8543956043956044 [2021-08-13 15:51:44,828 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 933 transitions. [2021-08-13 15:51:44,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 933 transitions. [2021-08-13 15:51:44,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:44,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 933 transitions. [2021-08-13 15:51:44,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.76923076923077) internal successors, (933), 13 states have internal predecessors, (933), 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) [2021-08-13 15:51:44,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:44,847 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:44,848 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-08-13 15:51:44,848 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 343 flow [2021-08-13 15:51:44,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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) [2021-08-13 15:51:44,849 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:44,849 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:44,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 15:51:44,850 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1834134300, now seen corresponding path program 1 times [2021-08-13 15:51:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:44,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861183067] [2021-08-13 15:51:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:44,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:44,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:44,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:44,934 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 15:51:44,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 15:51:44,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:44,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:44,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:44,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:44,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:44,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861183067] [2021-08-13 15:51:44,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861183067] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:44,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:44,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 15:51:44,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410303150] [2021-08-13 15:51:44,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 15:51:44,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 15:51:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 15:51:44,977 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 15:51:44,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2021-08-13 15:51:44,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:44,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 15:51:44,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:45,252 INFO L129 PetriNetUnfolder]: 196/701 cut-off events. [2021-08-13 15:51:45,252 INFO L130 PetriNetUnfolder]: For 63/250 co-relation queries the response was YES. [2021-08-13 15:51:45,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 701 events. 196/701 cut-off events. For 63/250 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4736 event pairs, 2 based on Foata normal form. 14/695 useless extension candidates. Maximal degree in co-relation 1273. Up to 101 conditions per place. [2021-08-13 15:51:45,261 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 10 selfloop transitions, 4 changer transitions 79/153 dead transitions. [2021-08-13 15:51:45,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 153 transitions, 645 flow [2021-08-13 15:51:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 15:51:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 15:51:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2021-08-13 15:51:45,265 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8635531135531136 [2021-08-13 15:51:45,266 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2021-08-13 15:51:45,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2021-08-13 15:51:45,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:45,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2021-08-13 15:51:45,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 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) [2021-08-13 15:51:45,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:45,273 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:45,273 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2021-08-13 15:51:45,273 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 153 transitions, 645 flow [2021-08-13 15:51:45,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2021-08-13 15:51:45,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:45,275 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:45,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 15:51:45,275 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:45,278 INFO L82 PathProgramCache]: Analyzing trace with hash 493601701, now seen corresponding path program 1 times [2021-08-13 15:51:45,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:45,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027512066] [2021-08-13 15:51:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:45,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:45,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:45,370 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 15:51:45,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 15:51:45,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:45,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:45,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:45,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:45,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027512066] [2021-08-13 15:51:45,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027512066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:45,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:45,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 15:51:45,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436384622] [2021-08-13 15:51:45,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 15:51:45,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 15:51:45,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 15:51:45,433 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-08-13 15:51:45,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 153 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-08-13 15:51:45,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:45,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-08-13 15:51:45,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:45,642 INFO L129 PetriNetUnfolder]: 287/934 cut-off events. [2021-08-13 15:51:45,643 INFO L130 PetriNetUnfolder]: For 381/606 co-relation queries the response was YES. [2021-08-13 15:51:45,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 934 events. 287/934 cut-off events. For 381/606 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6949 event pairs, 3 based on Foata normal form. 7/926 useless extension candidates. Maximal degree in co-relation 2098. Up to 125 conditions per place. [2021-08-13 15:51:45,650 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 10 selfloop transitions, 3 changer transitions 153/227 dead transitions. [2021-08-13 15:51:45,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 227 transitions, 1361 flow [2021-08-13 15:51:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 15:51:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 15:51:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2021-08-13 15:51:45,657 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8835978835978836 [2021-08-13 15:51:45,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2021-08-13 15:51:45,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2021-08-13 15:51:45,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:45,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2021-08-13 15:51:45,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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) [2021-08-13 15:51:45,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 15:51:45,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 15:51:45,661 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-08-13 15:51:45,661 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 227 transitions, 1361 flow [2021-08-13 15:51:45,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-08-13 15:51:45,662 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:45,662 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:45,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 15:51:45,662 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 414071260, now seen corresponding path program 1 times [2021-08-13 15:51:45,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:45,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478863111] [2021-08-13 15:51:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:45,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:45,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:45,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:45,783 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 15:51:45,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 15:51:45,799 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 15:51:45,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 15:51:45,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:45,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:45,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:45,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:45,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:45,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478863111] [2021-08-13 15:51:45,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478863111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:45,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:45,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 15:51:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877416510] [2021-08-13 15:51:45,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 15:51:45,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 15:51:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 15:51:45,846 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 15:51:45,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 227 transitions, 1361 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2021-08-13 15:51:45,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:45,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 15:51:45,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:46,398 INFO L129 PetriNetUnfolder]: 750/1904 cut-off events. [2021-08-13 15:51:46,398 INFO L130 PetriNetUnfolder]: For 1400/3722 co-relation queries the response was YES. [2021-08-13 15:51:46,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5677 conditions, 1904 events. 750/1904 cut-off events. For 1400/3722 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 15472 event pairs, 6 based on Foata normal form. 38/1921 useless extension candidates. Maximal degree in co-relation 5631. Up to 297 conditions per place. [2021-08-13 15:51:46,408 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 13 selfloop transitions, 6 changer transitions 394/465 dead transitions. [2021-08-13 15:51:46,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 465 transitions, 3847 flow [2021-08-13 15:51:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 15:51:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 15:51:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1180 transitions. [2021-08-13 15:51:46,412 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8263305322128851 [2021-08-13 15:51:46,412 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1180 transitions. [2021-08-13 15:51:46,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1180 transitions. [2021-08-13 15:51:46,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:46,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1180 transitions. [2021-08-13 15:51:46,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.41176470588235) internal successors, (1180), 17 states have internal predecessors, (1180), 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) [2021-08-13 15:51:46,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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) [2021-08-13 15:51:46,422 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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) [2021-08-13 15:51:46,423 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2021-08-13 15:51:46,423 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 465 transitions, 3847 flow [2021-08-13 15:51:46,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2021-08-13 15:51:46,423 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:46,423 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:46,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 15:51:46,424 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:46,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1965720352, now seen corresponding path program 1 times [2021-08-13 15:51:46,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:46,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748810185] [2021-08-13 15:51:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:46,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:46,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:46,523 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 15:51:46,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 15:51:46,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:46,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 15:51:46,557 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 15:51:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:46,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:46,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:46,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:46,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748810185] [2021-08-13 15:51:46,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748810185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:46,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:46,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 15:51:46,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521869343] [2021-08-13 15:51:46,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 15:51:46,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:46,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 15:51:46,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 15:51:46,572 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 15:51:46,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 465 transitions, 3847 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 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) [2021-08-13 15:51:46,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:46,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 15:51:46,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:47,256 INFO L129 PetriNetUnfolder]: 1456/3676 cut-off events. [2021-08-13 15:51:47,257 INFO L130 PetriNetUnfolder]: For 1367/1574 co-relation queries the response was YES. [2021-08-13 15:51:47,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9510 conditions, 3676 events. 1456/3676 cut-off events. For 1367/1574 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35018 event pairs, 34 based on Foata normal form. 41/3469 useless extension candidates. Maximal degree in co-relation 9461. Up to 809 conditions per place. [2021-08-13 15:51:47,277 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 9 selfloop transitions, 5 changer transitions 313/415 dead transitions. [2021-08-13 15:51:47,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 415 transitions, 3213 flow [2021-08-13 15:51:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 15:51:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 15:51:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 15:51:47,281 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 15:51:47,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 15:51:47,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 15:51:47,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:47,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 15:51:47,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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) [2021-08-13 15:51:47,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-08-13 15:51:47,289 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-08-13 15:51:47,290 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 57 predicate places. [2021-08-13 15:51:47,290 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 415 transitions, 3213 flow [2021-08-13 15:51:47,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 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) [2021-08-13 15:51:47,291 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:47,291 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:47,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 15:51:47,291 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash 977613795, now seen corresponding path program 1 times [2021-08-13 15:51:47,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:47,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848497373] [2021-08-13 15:51:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:47,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:47,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:47,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:47,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:47,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:47,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:47,374 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 15:51:47,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 15:51:47,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:47,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 15:51:47,402 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 15:51:47,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:47,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:47,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:47,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:47,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848497373] [2021-08-13 15:51:47,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848497373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:47,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:47,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 15:51:47,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020736802] [2021-08-13 15:51:47,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 15:51:47,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 15:51:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 15:51:47,422 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 15:51:47,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 415 transitions, 3213 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-08-13 15:51:47,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:47,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 15:51:47,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:47,970 INFO L129 PetriNetUnfolder]: 1011/2636 cut-off events. [2021-08-13 15:51:47,971 INFO L130 PetriNetUnfolder]: For 626/1696 co-relation queries the response was YES. [2021-08-13 15:51:47,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 2636 events. 1011/2636 cut-off events. For 626/1696 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 24520 event pairs, 2 based on Foata normal form. 217/2661 useless extension candidates. Maximal degree in co-relation 7349. Up to 774 conditions per place. [2021-08-13 15:51:47,986 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 5 selfloop transitions, 7 changer transitions 225/298 dead transitions. [2021-08-13 15:51:47,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 298 transitions, 2127 flow [2021-08-13 15:51:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 15:51:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 15:51:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 15:51:47,989 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 15:51:47,989 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 15:51:47,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 15:51:47,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:47,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 15:51:47,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 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) [2021-08-13 15:51:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:47,995 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 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) [2021-08-13 15:51:47,995 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2021-08-13 15:51:47,995 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 298 transitions, 2127 flow [2021-08-13 15:51:47,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-08-13 15:51:47,996 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 15:51:47,996 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 15:51:47,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 15:51:47,996 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 15:51:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 15:51:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash -602327976, now seen corresponding path program 1 times [2021-08-13 15:51:47,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 15:51:47,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21014688] [2021-08-13 15:51:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 15:51:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 15:51:48,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:48,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:48,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:48,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 15:51:48,070 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 15:51:48,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 15:51:48,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 15:51:48,099 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 15:51:48,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 15:51:48,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 15:51:48,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 15:51:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 15:51:48,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 15:51:48,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21014688] [2021-08-13 15:51:48,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21014688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 15:51:48,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 15:51:48,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 15:51:48,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32433097] [2021-08-13 15:51:48,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 15:51:48,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 15:51:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 15:51:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 15:51:48,115 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 15:51:48,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 298 transitions, 2127 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-08-13 15:51:48,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 15:51:48,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 15:51:48,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 15:51:48,721 INFO L129 PetriNetUnfolder]: 904/2322 cut-off events. [2021-08-13 15:51:48,722 INFO L130 PetriNetUnfolder]: For 582/2165 co-relation queries the response was YES. [2021-08-13 15:51:48,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 2322 events. 904/2322 cut-off events. For 582/2165 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 21954 event pairs, 2 based on Foata normal form. 264/2419 useless extension candidates. Maximal degree in co-relation 7729. Up to 725 conditions per place. [2021-08-13 15:51:48,735 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 201/201 dead transitions. [2021-08-13 15:51:48,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 201 transitions, 1401 flow [2021-08-13 15:51:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 15:51:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 15:51:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 15:51:48,739 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 15:51:48,739 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 15:51:48,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 15:51:48,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 15:51:48,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 15:51:48,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 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) [2021-08-13 15:51:48,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-08-13 15:51:48,746 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-08-13 15:51:48,746 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 58 predicate places. [2021-08-13 15:51:48,746 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 201 transitions, 1401 flow [2021-08-13 15:51:48,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-08-13 15:51:48,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown