/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-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 11:37:22,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 11:37:22,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 11:37:22,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 11:37:22,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 11:37:22,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 11:37:22,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 11:37:22,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 11:37:22,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 11:37:22,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 11:37:22,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 11:37:22,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 11:37:22,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 11:37:22,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 11:37:22,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 11:37:22,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 11:37:22,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 11:37:22,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 11:37:22,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 11:37:22,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 11:37:22,282 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-Hitting.epf [2021-08-13 11:37:22,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 11:37:22,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 11:37:22,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 11:37:22,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 11:37:22,314 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 11:37:22,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 11:37:22,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 11:37:22,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 11:37:22,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 11:37:22,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 11:37:22,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 11:37:22,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 11:37:22,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 11:37:22,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 11:37:22,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 11:37:22,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 11:37:22,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 11:37:22,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 11:37:22,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 11:37:22,608 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 11:37:22,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-08-13 11:37:22,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe3451/407fe50bbdd64806a8011e597056116b/FLAGdf3294bd3 [2021-08-13 11:37:23,099 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 11:37:23,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-08-13 11:37:23,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe3451/407fe50bbdd64806a8011e597056116b/FLAGdf3294bd3 [2021-08-13 11:37:23,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9cbe3451/407fe50bbdd64806a8011e597056116b [2021-08-13 11:37:23,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 11:37:23,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 11:37:23,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 11:37:23,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 11:37:23,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 11:37:23,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62468338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23, skipping insertion in model container [2021-08-13 11:37:23,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 11:37:23,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 11:37:23,352 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/safe031_tso.oepc.i[950,963] [2021-08-13 11:37:23,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 11:37:23,476 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 11:37:23,489 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/safe031_tso.oepc.i[950,963] [2021-08-13 11:37:23,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 11:37:23,576 INFO L208 MainTranslator]: Completed translation [2021-08-13 11:37:23,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23 WrapperNode [2021-08-13 11:37:23,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 11:37:23,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 11:37:23,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 11:37:23,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 11:37:23,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 11:37:23,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 11:37:23,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 11:37:23,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 11:37:23,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (1/1) ... [2021-08-13 11:37:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 11:37:23,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 11:37:23,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 11:37:23,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 11:37:23,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (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 11:37:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 11:37:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 11:37:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 11:37:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 11:37:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 11:37:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 11:37:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 11:37:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 11:37:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 11:37:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 11:37:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 11:37:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 11:37:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 11:37:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 11:37:23,686 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 11:37:24,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 11:37:24,049 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 11:37:24,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 11:37:24 BoogieIcfgContainer [2021-08-13 11:37:24,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 11:37:24,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 11:37:24,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 11:37:24,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 11:37:24,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 11:37:23" (1/3) ... [2021-08-13 11:37:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163e1d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 11:37:24, skipping insertion in model container [2021-08-13 11:37:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:37:23" (2/3) ... [2021-08-13 11:37:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163e1d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 11:37:24, skipping insertion in model container [2021-08-13 11:37:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 11:37:24" (3/3) ... [2021-08-13 11:37:24,057 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-08-13 11:37:24,060 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 11:37:24,060 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 11:37:24,061 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 11:37:24,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,110 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,116 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,116 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:37:24,117 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 11:37:24,130 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 11:37:24,160 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 11:37:24,160 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 11:37:24,160 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 11:37:24,160 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 11:37:24,160 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 11:37:24,160 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 11:37:24,160 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 11:37:24,160 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 11:37:24,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 11:37:24,241 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-13 11:37:24,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:37:24,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 11:37:24,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 11:37:24,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-08-13 11:37:24,269 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-08-13 11:37:24,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:37:24,270 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:24,270 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 11:37:24,270 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2019691919, now seen corresponding path program 1 times [2021-08-13 11:37:24,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:24,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554425065] [2021-08-13 11:37:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:24,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:24,519 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:37:24,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:37:24,530 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:37:24,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:37:24,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:24,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:24,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:24,561 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 11:37:24,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:24,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554425065] [2021-08-13 11:37:24,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554425065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:24,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:24,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 11:37:24,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277484586] [2021-08-13 11:37:24,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 11:37:24,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:24,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 11:37:24,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 11:37:24,578 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-08-13 11:37:24,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 11:37:24,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:24,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-08-13 11:37:24,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:24,842 INFO L129 PetriNetUnfolder]: 374/964 cut-off events. [2021-08-13 11:37:24,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:37:24,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 964 events. 374/964 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6443 event pairs, 81 based on Foata normal form. 35/972 useless extension candidates. Maximal degree in co-relation 1580. Up to 203 conditions per place. [2021-08-13 11:37:24,852 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 17 selfloop transitions, 6 changer transitions 37/113 dead transitions. [2021-08-13 11:37:24,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 355 flow [2021-08-13 11:37:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 11:37:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 11:37:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2021-08-13 11:37:24,865 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8688085676037484 [2021-08-13 11:37:24,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2021-08-13 11:37:24,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2021-08-13 11:37:24,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:24,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2021-08-13 11:37:24,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 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 11:37:24,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:24,884 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:24,884 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2021-08-13 11:37:24,885 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 113 transitions, 355 flow [2021-08-13 11:37:24,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 11:37:24,885 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:24,885 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 11:37:24,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 11:37:24,886 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:24,886 INFO L82 PathProgramCache]: Analyzing trace with hash 36600720, now seen corresponding path program 1 times [2021-08-13 11:37:24,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:24,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875885554] [2021-08-13 11:37:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:24,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:24,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:24,961 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:37:24,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:37:24,969 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:37:24,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:37:24,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:24,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:24,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:24,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:24,998 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 11:37:24,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:24,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875885554] [2021-08-13 11:37:24,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875885554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:24,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:24,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:37:24,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89292003] [2021-08-13 11:37:24,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:37:25,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:25,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:37:25,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:37:25,001 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-08-13 11:37:25,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 113 transitions, 355 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 11:37:25,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:25,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-08-13 11:37:25,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:25,287 INFO L129 PetriNetUnfolder]: 421/1084 cut-off events. [2021-08-13 11:37:25,287 INFO L130 PetriNetUnfolder]: For 36/518 co-relation queries the response was YES. [2021-08-13 11:37:25,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1084 events. 421/1084 cut-off events. For 36/518 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7686 event pairs, 20 based on Foata normal form. 21/1082 useless extension candidates. Maximal degree in co-relation 2523. Up to 240 conditions per place. [2021-08-13 11:37:25,294 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 19 selfloop transitions, 10 changer transitions 105/187 dead transitions. [2021-08-13 11:37:25,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 187 transitions, 919 flow [2021-08-13 11:37:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 11:37:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 11:37:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 928 transitions. [2021-08-13 11:37:25,296 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8600556070435589 [2021-08-13 11:37:25,296 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 928 transitions. [2021-08-13 11:37:25,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 928 transitions. [2021-08-13 11:37:25,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:25,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 928 transitions. [2021-08-13 11:37:25,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.38461538461539) internal successors, (928), 13 states have internal predecessors, (928), 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 11:37:25,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 11:37:25,301 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 11:37:25,301 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2021-08-13 11:37:25,301 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 187 transitions, 919 flow [2021-08-13 11:37:25,302 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 11:37:25,302 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:25,302 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 11:37:25,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 11:37:25,302 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1441415890, now seen corresponding path program 1 times [2021-08-13 11:37:25,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:25,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781240227] [2021-08-13 11:37:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:25,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:25,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:25,404 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:37:25,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:37:25,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:25,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:25,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:25,435 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 11:37:25,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:25,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781240227] [2021-08-13 11:37:25,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781240227] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:25,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:25,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 11:37:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629433991] [2021-08-13 11:37:25,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 11:37:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 11:37:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 11:37:25,437 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-08-13 11:37:25,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 187 transitions, 919 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:37:25,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:25,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-08-13 11:37:25,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:25,594 INFO L129 PetriNetUnfolder]: 540/1470 cut-off events. [2021-08-13 11:37:25,594 INFO L130 PetriNetUnfolder]: For 273/714 co-relation queries the response was YES. [2021-08-13 11:37:25,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 1470 events. 540/1470 cut-off events. For 273/714 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11883 event pairs, 16 based on Foata normal form. 21/1470 useless extension candidates. Maximal degree in co-relation 3930. Up to 285 conditions per place. [2021-08-13 11:37:25,600 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 13 selfloop transitions, 6 changer transitions 170/255 dead transitions. [2021-08-13 11:37:25,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 255 transitions, 1585 flow [2021-08-13 11:37:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 11:37:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 11:37:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2021-08-13 11:37:25,602 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8862115127175368 [2021-08-13 11:37:25,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2021-08-13 11:37:25,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2021-08-13 11:37:25,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:25,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2021-08-13 11:37:25,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 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 11:37:25,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:25,605 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:25,606 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2021-08-13 11:37:25,606 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 255 transitions, 1585 flow [2021-08-13 11:37:25,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:37:25,606 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:25,606 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 11:37:25,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 11:37:25,606 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash 208682927, now seen corresponding path program 1 times [2021-08-13 11:37:25,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:25,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413054054] [2021-08-13 11:37:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:25,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:25,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:25,654 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:37:25,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:37:25,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:37:25,714 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:37:25,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:25,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:25,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:25,723 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 11:37:25,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:25,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413054054] [2021-08-13 11:37:25,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413054054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:25,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:25,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 11:37:25,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960195255] [2021-08-13 11:37:25,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 11:37:25,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:25,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 11:37:25,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 11:37:25,725 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 11:37:25,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 255 transitions, 1585 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 11:37:25,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:25,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 11:37:25,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:25,947 INFO L129 PetriNetUnfolder]: 774/2049 cut-off events. [2021-08-13 11:37:25,947 INFO L130 PetriNetUnfolder]: For 249/375 co-relation queries the response was YES. [2021-08-13 11:37:25,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5075 conditions, 2049 events. 774/2049 cut-off events. For 249/375 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17406 event pairs, 24 based on Foata normal form. 0/1908 useless extension candidates. Maximal degree in co-relation 5032. Up to 420 conditions per place. [2021-08-13 11:37:25,958 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 17 changer transitions 84/233 dead transitions. [2021-08-13 11:37:25,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 233 transitions, 1365 flow [2021-08-13 11:37:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 11:37:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 11:37:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-08-13 11:37:25,960 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-08-13 11:37:25,960 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-08-13 11:37:25,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-08-13 11:37:25,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:25,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-08-13 11:37:25,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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 11:37:25,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 11:37:25,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 11:37:25,963 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2021-08-13 11:37:25,963 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 233 transitions, 1365 flow [2021-08-13 11:37:25,964 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 11:37:25,964 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:25,964 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 11:37:25,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 11:37:25,964 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1724933838, now seen corresponding path program 1 times [2021-08-13 11:37:25,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:25,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42128739] [2021-08-13 11:37:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:26,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:26,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:26,038 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:37:26,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:37:26,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:37:26,060 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:37:26,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:26,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,097 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 11:37:26,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:26,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42128739] [2021-08-13 11:37:26,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42128739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:26,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:26,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:37:26,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621479007] [2021-08-13 11:37:26,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:37:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:37:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:37:26,099 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 11:37:26,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 233 transitions, 1365 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 11:37:26,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:26,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 11:37:26,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:26,323 INFO L129 PetriNetUnfolder]: 436/1220 cut-off events. [2021-08-13 11:37:26,323 INFO L130 PetriNetUnfolder]: For 187/816 co-relation queries the response was YES. [2021-08-13 11:37:26,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 1220 events. 436/1220 cut-off events. For 187/816 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9763 event pairs, 0 based on Foata normal form. 109/1230 useless extension candidates. Maximal degree in co-relation 3271. Up to 325 conditions per place. [2021-08-13 11:37:26,330 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 22 selfloop transitions, 44 changer transitions 49/189 dead transitions. [2021-08-13 11:37:26,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 189 transitions, 1045 flow [2021-08-13 11:37:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 11:37:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 11:37:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-08-13 11:37:26,332 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-08-13 11:37:26,332 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-08-13 11:37:26,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-08-13 11:37:26,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:26,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-08-13 11:37:26,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 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 11:37:26,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 11:37:26,337 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 11:37:26,337 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 40 predicate places. [2021-08-13 11:37:26,337 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 189 transitions, 1045 flow [2021-08-13 11:37:26,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 11:37:26,338 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:26,338 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:37:26,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 11:37:26,340 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2040547709, now seen corresponding path program 1 times [2021-08-13 11:37:26,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:26,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829710292] [2021-08-13 11:37:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:26,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:26,407 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:37:26,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:37:26,413 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:37:26,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:37:26,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:26,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:26,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,452 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 11:37:26,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:26,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829710292] [2021-08-13 11:37:26,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829710292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:26,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:26,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:37:26,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864825966] [2021-08-13 11:37:26,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:37:26,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:26,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:37:26,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:37:26,454 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 11:37:26,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 189 transitions, 1045 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 11:37:26,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:26,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 11:37:26,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:26,772 INFO L129 PetriNetUnfolder]: 555/1635 cut-off events. [2021-08-13 11:37:26,773 INFO L130 PetriNetUnfolder]: For 422/862 co-relation queries the response was YES. [2021-08-13 11:37:26,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 1635 events. 555/1635 cut-off events. For 422/862 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14260 event pairs, 0 based on Foata normal form. 23/1514 useless extension candidates. Maximal degree in co-relation 4548. Up to 413 conditions per place. [2021-08-13 11:37:26,785 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 37 selfloop transitions, 22 changer transitions 84/246 dead transitions. [2021-08-13 11:37:26,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 246 transitions, 1685 flow [2021-08-13 11:37:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-13 11:37:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-08-13 11:37:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 957 transitions. [2021-08-13 11:37:26,788 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8235800344234079 [2021-08-13 11:37:26,788 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 957 transitions. [2021-08-13 11:37:26,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 957 transitions. [2021-08-13 11:37:26,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:26,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 957 transitions. [2021-08-13 11:37:26,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 68.35714285714286) internal successors, (957), 14 states have internal predecessors, (957), 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 11:37:26,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 83.0) internal successors, (1245), 15 states have internal predecessors, (1245), 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 11:37:26,793 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 83.0) internal successors, (1245), 15 states have internal predecessors, (1245), 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 11:37:26,793 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2021-08-13 11:37:26,793 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 246 transitions, 1685 flow [2021-08-13 11:37:26,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 11:37:26,793 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:26,794 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:37:26,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 11:37:26,794 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:26,794 INFO L82 PathProgramCache]: Analyzing trace with hash 387840463, now seen corresponding path program 1 times [2021-08-13 11:37:26,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:26,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017743558] [2021-08-13 11:37:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:26,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:26,848 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:37:26,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:37:26,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:26,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:26,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:26,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:26,889 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 11:37:26,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:26,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017743558] [2021-08-13 11:37:26,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017743558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:26,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:26,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 11:37:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388403516] [2021-08-13 11:37:26,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 11:37:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 11:37:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 11:37:26,891 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-08-13 11:37:26,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 246 transitions, 1685 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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 11:37:26,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:26,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-08-13 11:37:26,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:27,147 INFO L129 PetriNetUnfolder]: 805/2356 cut-off events. [2021-08-13 11:37:27,147 INFO L130 PetriNetUnfolder]: For 870/1333 co-relation queries the response was YES. [2021-08-13 11:37:27,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 2356 events. 805/2356 cut-off events. For 870/1333 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 22256 event pairs, 0 based on Foata normal form. 11/2173 useless extension candidates. Maximal degree in co-relation 6749. Up to 632 conditions per place. [2021-08-13 11:37:27,158 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 29 selfloop transitions, 9 changer transitions 121/287 dead transitions. [2021-08-13 11:37:27,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 287 transitions, 2323 flow [2021-08-13 11:37:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 11:37:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 11:37:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 655 transitions. [2021-08-13 11:37:27,160 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8768406961178046 [2021-08-13 11:37:27,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 655 transitions. [2021-08-13 11:37:27,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 655 transitions. [2021-08-13 11:37:27,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:27,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 655 transitions. [2021-08-13 11:37:27,161 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 11:37:27,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:27,163 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 11:37:27,163 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 61 predicate places. [2021-08-13 11:37:27,163 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 287 transitions, 2323 flow [2021-08-13 11:37:27,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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 11:37:27,163 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:37:27,163 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:37:27,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 11:37:27,163 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:37:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:37:27,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1823537329, now seen corresponding path program 2 times [2021-08-13 11:37:27,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:37:27,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300640695] [2021-08-13 11:37:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:37:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:37:27,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:27,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:27,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:27,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:37:27,195 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:37:27,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:37:27,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:37:27,216 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:37:27,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:37:27,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:37:27,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:37:27,226 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 11:37:27,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:37:27,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300640695] [2021-08-13 11:37:27,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300640695] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:37:27,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:37:27,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 11:37:27,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719551284] [2021-08-13 11:37:27,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 11:37:27,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:37:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 11:37:27,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 11:37:27,228 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 11:37:27,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 287 transitions, 2323 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:37:27,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:37:27,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 11:37:27,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:37:27,573 INFO L129 PetriNetUnfolder]: 719/1925 cut-off events. [2021-08-13 11:37:27,573 INFO L130 PetriNetUnfolder]: For 740/2864 co-relation queries the response was YES. [2021-08-13 11:37:27,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6579 conditions, 1925 events. 719/1925 cut-off events. For 740/2864 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17906 event pairs, 0 based on Foata normal form. 291/2043 useless extension candidates. Maximal degree in co-relation 6521. Up to 568 conditions per place. [2021-08-13 11:37:27,583 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 0 selfloop transitions, 0 changer transitions 206/206 dead transitions. [2021-08-13 11:37:27,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 206 transitions, 1539 flow [2021-08-13 11:37:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 11:37:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 11:37:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-08-13 11:37:27,585 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-08-13 11:37:27,585 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-08-13 11:37:27,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-08-13 11:37:27,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:37:27,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-08-13 11:37:27,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 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 11:37:27,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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 11:37:27,589 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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 11:37:27,590 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 59 predicate places. [2021-08-13 11:37:27,590 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 206 transitions, 1539 flow [2021-08-13 11:37:27,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:37:27,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown