/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 16:21:44,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 16:21:44,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 16:21:44,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 16:21:44,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 16:21:44,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 16:21:44,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 16:21:44,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 16:21:44,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 16:21:44,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 16:21:44,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 16:21:44,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 16:21:44,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 16:21:44,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 16:21:44,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 16:21:44,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 16:21:44,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 16:21:44,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 16:21:44,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 16:21:44,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 16:21:44,731 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 16:21:44,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 16:21:44,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 16:21:44,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 16:21:44,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 16:21:44,772 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 16:21:44,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 16:21:44,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 16:21:44,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 16:21:44,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 16:21:44,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 16:21:44,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 16:21:44,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 16:21:44,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 16:21:44,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 16:21:44,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 16:21:44,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 16:21:44,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:21:44,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 16:21:44,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 16:21:44,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 16:21:44,776 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 16:21:44,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 16:21:44,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 16:21:45,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 16:21:45,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 16:21:45,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 16:21:45,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 16:21:45,077 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 16:21:45,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-08-13 16:21:45,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6da4ddd/eedde49430ce4d52b13258eca0adc331/FLAG6c619c4ae [2021-08-13 16:21:45,709 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 16:21:45,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-08-13 16:21:45,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6da4ddd/eedde49430ce4d52b13258eca0adc331/FLAG6c619c4ae [2021-08-13 16:21:46,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6da4ddd/eedde49430ce4d52b13258eca0adc331 [2021-08-13 16:21:46,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 16:21:46,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 16:21:46,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 16:21:46,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 16:21:46,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 16:21:46,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b35622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46, skipping insertion in model container [2021-08-13 16:21:46,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 16:21:46,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 16:21:46,337 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/safe020_tso.opt.i[949,962] [2021-08-13 16:21:46,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:21:46,486 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 16:21:46,497 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/safe020_tso.opt.i[949,962] [2021-08-13 16:21:46,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:21:46,580 INFO L208 MainTranslator]: Completed translation [2021-08-13 16:21:46,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46 WrapperNode [2021-08-13 16:21:46,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 16:21:46,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 16:21:46,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 16:21:46,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 16:21:46,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 16:21:46,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 16:21:46,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 16:21:46,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 16:21:46,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (1/1) ... [2021-08-13 16:21:46,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 16:21:46,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 16:21:46,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 16:21:46,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 16:21:46,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (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 16:21:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 16:21:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 16:21:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 16:21:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 16:21:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 16:21:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 16:21:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 16:21:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 16:21:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 16:21:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 16:21:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 16:21:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 16:21:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 16:21:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 16:21:46,709 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 16:21:47,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 16:21:47,166 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 16:21:47,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:21:47 BoogieIcfgContainer [2021-08-13 16:21:47,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 16:21:47,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 16:21:47,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 16:21:47,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 16:21:47,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:21:46" (1/3) ... [2021-08-13 16:21:47,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c84fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:21:47, skipping insertion in model container [2021-08-13 16:21:47,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:21:46" (2/3) ... [2021-08-13 16:21:47,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c84fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:21:47, skipping insertion in model container [2021-08-13 16:21:47,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:21:47" (3/3) ... [2021-08-13 16:21:47,174 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-08-13 16:21:47,180 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 16:21:47,180 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 16:21:47,181 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 16:21:47,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,219 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,234 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:21:47,243 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 16:21:47,265 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 16:21:47,289 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 16:21:47,289 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 16:21:47,289 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 16:21:47,289 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 16:21:47,289 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 16:21:47,290 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 16:21:47,290 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 16:21:47,290 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 16:21:47,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 16:21:47,335 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-08-13 16:21:47,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:21:47,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 16:21:47,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 16:21:47,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-08-13 16:21:47,363 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-08-13 16:21:47,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:21:47,364 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:47,364 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] [2021-08-13 16:21:47,365 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-08-13 16:21:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:47,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428316403] [2021-08-13 16:21:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:47,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:47,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:47,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:47,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:47,675 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:21:47,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:21:47,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:47,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:47,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:47,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:47,745 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 16:21:47,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:47,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428316403] [2021-08-13 16:21:47,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428316403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:47,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:47,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:21:47,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238017432] [2021-08-13 16:21:47,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:21:47,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:21:47,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:21:47,775 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 82 [2021-08-13 16:21:47,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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 16:21:47,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:47,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 82 [2021-08-13 16:21:47,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:47,958 INFO L129 PetriNetUnfolder]: 24/144 cut-off events. [2021-08-13 16:21:47,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:21:47,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 144 events. 24/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 439 event pairs, 5 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 185. Up to 31 conditions per place. [2021-08-13 16:21:47,960 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 8 selfloop transitions, 3 changer transitions 19/87 dead transitions. [2021-08-13 16:21:47,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 243 flow [2021-08-13 16:21:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:21:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:21:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 655 transitions. [2021-08-13 16:21:47,990 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8875338753387534 [2021-08-13 16:21:47,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 655 transitions. [2021-08-13 16:21:47,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 655 transitions. [2021-08-13 16:21:47,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:47,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 655 transitions. [2021-08-13 16:21:48,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.77777777777777) internal successors, (655), 9 states have internal predecessors, (655), 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 16:21:48,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:21:48,014 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:21:48,014 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2021-08-13 16:21:48,015 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 243 flow [2021-08-13 16:21:48,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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 16:21:48,015 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:48,016 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] [2021-08-13 16:21:48,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 16:21:48,016 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash 740790678, now seen corresponding path program 1 times [2021-08-13 16:21:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:48,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133672907] [2021-08-13 16:21:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:48,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:48,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:48,171 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:21:48,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:21:48,202 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:21:48,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:21:48,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:48,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:48,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:48,249 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 16:21:48,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:48,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133672907] [2021-08-13 16:21:48,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133672907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:48,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:48,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:21:48,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726719373] [2021-08-13 16:21:48,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:21:48,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:48,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:21:48,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:21:48,255 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 16:21:48,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 243 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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 16:21:48,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:48,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 16:21:48,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:48,621 INFO L129 PetriNetUnfolder]: 125/472 cut-off events. [2021-08-13 16:21:48,622 INFO L130 PetriNetUnfolder]: For 41/96 co-relation queries the response was YES. [2021-08-13 16:21:48,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 472 events. 125/472 cut-off events. For 41/96 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2882 event pairs, 7 based on Foata normal form. 10/473 useless extension candidates. Maximal degree in co-relation 923. Up to 90 conditions per place. [2021-08-13 16:21:48,626 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 16 selfloop transitions, 6 changer transitions 82/157 dead transitions. [2021-08-13 16:21:48,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 157 transitions, 703 flow [2021-08-13 16:21:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:21:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:21:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2021-08-13 16:21:48,631 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8480300187617261 [2021-08-13 16:21:48,631 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2021-08-13 16:21:48,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2021-08-13 16:21:48,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:48,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2021-08-13 16:21:48,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.53846153846153) internal successors, (904), 13 states have internal predecessors, (904), 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 16:21:48,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:48,637 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:48,637 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-08-13 16:21:48,637 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 157 transitions, 703 flow [2021-08-13 16:21:48,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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 16:21:48,638 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:48,638 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] [2021-08-13 16:21:48,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 16:21:48,638 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:48,639 INFO L82 PathProgramCache]: Analyzing trace with hash 457798869, now seen corresponding path program 1 times [2021-08-13 16:21:48,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:48,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107768731] [2021-08-13 16:21:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:48,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:48,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:48,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:48,699 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:21:48,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:21:48,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:48,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:48,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:48,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:48,734 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 16:21:48,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:48,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107768731] [2021-08-13 16:21:48,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107768731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:48,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:48,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:21:48,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169254713] [2021-08-13 16:21:48,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:21:48,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:48,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:21:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:21:48,737 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-08-13 16:21:48,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 157 transitions, 703 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 16:21:48,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:48,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-08-13 16:21:48,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:49,077 INFO L129 PetriNetUnfolder]: 433/1284 cut-off events. [2021-08-13 16:21:49,078 INFO L130 PetriNetUnfolder]: For 401/991 co-relation queries the response was YES. [2021-08-13 16:21:49,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1284 events. 433/1284 cut-off events. For 401/991 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10373 event pairs, 11 based on Foata normal form. 17/1281 useless extension candidates. Maximal degree in co-relation 3228. Up to 242 conditions per place. [2021-08-13 16:21:49,091 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 14 selfloop transitions, 4 changer transitions 209/285 dead transitions. [2021-08-13 16:21:49,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 285 transitions, 1763 flow [2021-08-13 16:21:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:21:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:21:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 16:21:49,096 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-08-13 16:21:49,096 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 16:21:49,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 16:21:49,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:49,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 16:21:49,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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 16:21:49,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:49,103 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:49,103 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 32 predicate places. [2021-08-13 16:21:49,104 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 285 transitions, 1763 flow [2021-08-13 16:21:49,104 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 16:21:49,104 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:49,104 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 16:21:49,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 16:21:49,104 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1711058120, now seen corresponding path program 1 times [2021-08-13 16:21:49,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:49,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238439808] [2021-08-13 16:21:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:49,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:49,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:49,213 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:21:49,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:21:49,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:21:49,240 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:21:49,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:49,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:49,250 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 16:21:49,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:49,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238439808] [2021-08-13 16:21:49,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238439808] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:49,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:49,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:21:49,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611224332] [2021-08-13 16:21:49,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:21:49,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:49,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:21:49,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:21:49,254 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:21:49,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 285 transitions, 1763 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 16:21:49,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:49,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:21:49,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:49,708 INFO L129 PetriNetUnfolder]: 930/2503 cut-off events. [2021-08-13 16:21:49,708 INFO L130 PetriNetUnfolder]: For 444/582 co-relation queries the response was YES. [2021-08-13 16:21:49,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 2503 events. 930/2503 cut-off events. For 444/582 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22611 event pairs, 36 based on Foata normal form. 7/2354 useless extension candidates. Maximal degree in co-relation 5851. Up to 564 conditions per place. [2021-08-13 16:21:49,726 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 21 selfloop transitions, 15 changer transitions 128/274 dead transitions. [2021-08-13 16:21:49,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 274 transitions, 1589 flow [2021-08-13 16:21:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 16:21:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 16:21:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-08-13 16:21:49,729 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-08-13 16:21:49,729 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-08-13 16:21:49,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-08-13 16:21:49,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:49,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-08-13 16:21:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 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 16:21:49,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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 16:21:49,734 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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 16:21:49,734 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 41 predicate places. [2021-08-13 16:21:49,734 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 274 transitions, 1589 flow [2021-08-13 16:21:49,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 16:21:49,734 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:49,734 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] [2021-08-13 16:21:49,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 16:21:49,735 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 143686206, now seen corresponding path program 1 times [2021-08-13 16:21:49,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:49,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688763453] [2021-08-13 16:21:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:49,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:49,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:49,833 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:21:49,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:21:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:21:49,859 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:21:49,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:49,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:49,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:49,871 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 16:21:49,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:49,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688763453] [2021-08-13 16:21:49,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688763453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:49,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:49,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:21:49,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040095670] [2021-08-13 16:21:49,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:21:49,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:49,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:21:49,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:21:49,874 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:21:49,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 274 transitions, 1589 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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 16:21:49,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:49,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:21:49,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:50,323 INFO L129 PetriNetUnfolder]: 597/1641 cut-off events. [2021-08-13 16:21:50,323 INFO L130 PetriNetUnfolder]: For 236/824 co-relation queries the response was YES. [2021-08-13 16:21:50,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 1641 events. 597/1641 cut-off events. For 236/824 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13971 event pairs, 0 based on Foata normal form. 125/1655 useless extension candidates. Maximal degree in co-relation 4311. Up to 461 conditions per place. [2021-08-13 16:21:50,333 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 22 selfloop transitions, 36 changer transitions 100/223 dead transitions. [2021-08-13 16:21:50,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 223 transitions, 1273 flow [2021-08-13 16:21:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:21:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:21:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-08-13 16:21:50,337 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-08-13 16:21:50,337 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-08-13 16:21:50,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-08-13 16:21:50,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:50,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-08-13 16:21:50,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 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 16:21:50,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:50,347 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 16:21:50,347 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 47 predicate places. [2021-08-13 16:21:50,347 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 223 transitions, 1273 flow [2021-08-13 16:21:50,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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 16:21:50,347 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:50,348 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 16:21:50,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 16:21:50,348 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash -616622039, now seen corresponding path program 1 times [2021-08-13 16:21:50,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:50,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381852084] [2021-08-13 16:21:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:50,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:50,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:50,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:50,434 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:21:50,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:21:50,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:21:50,468 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:21:50,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:50,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:50,480 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 16:21:50,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:50,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381852084] [2021-08-13 16:21:50,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381852084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:50,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:50,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 16:21:50,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601891679] [2021-08-13 16:21:50,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 16:21:50,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:50,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 16:21:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 16:21:50,483 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:21:50,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 223 transitions, 1273 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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 16:21:50,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:50,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:21:50,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:50,917 INFO L129 PetriNetUnfolder]: 531/1425 cut-off events. [2021-08-13 16:21:50,917 INFO L130 PetriNetUnfolder]: For 307/1199 co-relation queries the response was YES. [2021-08-13 16:21:50,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1425 events. 531/1425 cut-off events. For 307/1199 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12190 event pairs, 0 based on Foata normal form. 154/1483 useless extension candidates. Maximal degree in co-relation 4578. Up to 426 conditions per place. [2021-08-13 16:21:50,925 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 19 selfloop transitions, 40 changer transitions 69/188 dead transitions. [2021-08-13 16:21:50,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 188 transitions, 1227 flow [2021-08-13 16:21:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 16:21:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 16:21:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-08-13 16:21:50,929 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-08-13 16:21:50,929 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-08-13 16:21:50,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-08-13 16:21:50,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:50,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-08-13 16:21:50,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 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 16:21:50,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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 16:21:50,936 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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 16:21:50,936 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 50 predicate places. [2021-08-13 16:21:50,936 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 188 transitions, 1227 flow [2021-08-13 16:21:50,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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 16:21:50,937 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:21:50,937 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 16:21:50,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 16:21:50,937 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:21:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:21:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1918740218, now seen corresponding path program 1 times [2021-08-13 16:21:50,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:21:50,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869583364] [2021-08-13 16:21:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:21:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:21:51,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:51,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:51,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:51,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:21:51,008 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:21:51,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:21:51,019 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:21:51,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:21:51,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:51,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:51,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:51,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:21:51,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:21:51,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:21:51,063 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 16:21:51,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:21:51,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869583364] [2021-08-13 16:21:51,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869583364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:21:51,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:21:51,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:21:51,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876101831] [2021-08-13 16:21:51,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:21:51,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:21:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:21:51,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:21:51,067 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-08-13 16:21:51,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 188 transitions, 1227 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:21:51,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:21:51,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-08-13 16:21:51,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:21:51,343 INFO L129 PetriNetUnfolder]: 749/2005 cut-off events. [2021-08-13 16:21:51,343 INFO L130 PetriNetUnfolder]: For 522/968 co-relation queries the response was YES. [2021-08-13 16:21:51,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 2005 events. 749/2005 cut-off events. For 522/968 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 18586 event pairs, 0 based on Foata normal form. 6/1862 useless extension candidates. Maximal degree in co-relation 6596. Up to 602 conditions per place. [2021-08-13 16:21:51,357 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 199/199 dead transitions. [2021-08-13 16:21:51,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 199 transitions, 1401 flow [2021-08-13 16:21:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 16:21:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 16:21:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 535 transitions. [2021-08-13 16:21:51,359 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8155487804878049 [2021-08-13 16:21:51,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 535 transitions. [2021-08-13 16:21:51,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 535 transitions. [2021-08-13 16:21:51,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:21:51,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 535 transitions. [2021-08-13 16:21:51,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 16:21:51,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 16:21:51,362 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 16:21:51,363 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 55 predicate places. [2021-08-13 16:21:51,363 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 199 transitions, 1401 flow [2021-08-13 16:21:51,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:21:51,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown