/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 05:59:34,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 05:59:34,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 05:59:34,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 05:59:34,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 05:59:34,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 05:59:34,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 05:59:34,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 05:59:34,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 05:59:34,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 05:59:34,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 05:59:34,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 05:59:34,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 05:59:34,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 05:59:34,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 05:59:34,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 05:59:34,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 05:59:34,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 05:59:34,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 05:59:34,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 05:59:34,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 05:59:34,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 05:59:34,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 05:59:34,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 05:59:34,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 05:59:34,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 05:59:34,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 05:59:34,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 05:59:34,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 05:59:34,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 05:59:34,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 05:59:34,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 05:59:34,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 05:59:34,489 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 05:59:34,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 05:59:34,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 05:59:34,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 05:59:34,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 05:59:34,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 05:59:34,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 05:59:34,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 05:59:34,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 05:59:34,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 05:59:34,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 05:59:34,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 05:59:34,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 05:59:34,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 05:59:34,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 05:59:34,494 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 05:59:34,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 05:59:34,494 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 05:59:34,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 05:59:34,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 05:59:34,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 05:59:34,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 05:59:34,815 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 05:59:34,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-08-13 05:59:34,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6329d255f/3b80302cc4ff4a74ae1ffad9733ec446/FLAGa3a71ea1d [2021-08-13 05:59:35,336 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 05:59:35,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-08-13 05:59:35,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6329d255f/3b80302cc4ff4a74ae1ffad9733ec446/FLAGa3a71ea1d [2021-08-13 05:59:35,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6329d255f/3b80302cc4ff4a74ae1ffad9733ec446 [2021-08-13 05:59:35,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 05:59:35,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 05:59:35,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 05:59:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 05:59:35,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 05:59:35,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 05:59:35" (1/1) ... [2021-08-13 05:59:35,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e017d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:35, skipping insertion in model container [2021-08-13 05:59:35,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 05:59:35" (1/1) ... [2021-08-13 05:59:35,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 05:59:35,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 05:59:35,849 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/safe017_tso.oepc.i[950,963] [2021-08-13 05:59:35,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 05:59:35,959 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 05:59:35,969 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/safe017_tso.oepc.i[950,963] [2021-08-13 05:59:36,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 05:59:36,074 INFO L208 MainTranslator]: Completed translation [2021-08-13 05:59:36,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36 WrapperNode [2021-08-13 05:59:36,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 05:59:36,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 05:59:36,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 05:59:36,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 05:59:36,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 05:59:36,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 05:59:36,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 05:59:36,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 05:59:36,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... [2021-08-13 05:59:36,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 05:59:36,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 05:59:36,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 05:59:36,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 05:59:36,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 05:59:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 05:59:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 05:59:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 05:59:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 05:59:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 05:59:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 05:59:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 05:59:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 05:59:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 05:59:36,209 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 05:59:36,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 05:59:36,535 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 05:59:36,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:59:36 BoogieIcfgContainer [2021-08-13 05:59:36,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 05:59:36,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 05:59:36,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 05:59:36,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 05:59:36,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 05:59:35" (1/3) ... [2021-08-13 05:59:36,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460ec0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:59:36, skipping insertion in model container [2021-08-13 05:59:36,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 05:59:36" (2/3) ... [2021-08-13 05:59:36,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460ec0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:59:36, skipping insertion in model container [2021-08-13 05:59:36,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:59:36" (3/3) ... [2021-08-13 05:59:36,543 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-08-13 05:59:36,547 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 05:59:36,548 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 05:59:36,548 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 05:59:36,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,578 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,579 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,579 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,579 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,581 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 05:59:36,594 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 05:59:36,612 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 05:59:36,642 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 05:59:36,643 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 05:59:36,643 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 05:59:36,643 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 05:59:36,643 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 05:59:36,643 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 05:59:36,643 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 05:59:36,643 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 05:59:36,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 177 flow [2021-08-13 05:59:36,685 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-08-13 05:59:36,685 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 05:59:36,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 2/78 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. 0/75 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 05:59:36,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 81 transitions, 177 flow [2021-08-13 05:59:36,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 66 transitions, 141 flow [2021-08-13 05:59:36,712 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2021-08-13 05:59:36,712 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 05:59:36,712 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:36,713 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] [2021-08-13 05:59:36,713 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:36,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:36,719 INFO L82 PathProgramCache]: Analyzing trace with hash 217118883, now seen corresponding path program 1 times [2021-08-13 05:59:36,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:36,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363135188] [2021-08-13 05:59:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:36,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:36,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:36,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:36,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:37,003 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 05:59:37,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 05:59:37,021 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 05:59:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 05:59:37,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:37,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:37,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:37,067 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 05:59:37,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:37,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363135188] [2021-08-13 05:59:37,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363135188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:37,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:37,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 05:59:37,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067007668] [2021-08-13 05:59:37,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 05:59:37,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:37,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 05:59:37,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 05:59:37,099 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-08-13 05:59:37,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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 05:59:37,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:37,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-08-13 05:59:37,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:37,455 INFO L129 PetriNetUnfolder]: 294/738 cut-off events. [2021-08-13 05:59:37,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 05:59:37,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 738 events. 294/738 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4284 event pairs, 22 based on Foata normal form. 29/740 useless extension candidates. Maximal degree in co-relation 1225. Up to 135 conditions per place. [2021-08-13 05:59:37,465 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 19 selfloop transitions, 6 changer transitions 47/123 dead transitions. [2021-08-13 05:59:37,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 399 flow [2021-08-13 05:59:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 05:59:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 05:59:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2021-08-13 05:59:37,486 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2021-08-13 05:59:37,487 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 897 transitions. [2021-08-13 05:59:37,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 897 transitions. [2021-08-13 05:59:37,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:37,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 897 transitions. [2021-08-13 05:59:37,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 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 05:59:37,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:37,511 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:37,511 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2021-08-13 05:59:37,512 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 399 flow [2021-08-13 05:59:37,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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 05:59:37,512 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:37,513 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 05:59:37,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 05:59:37,513 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:37,514 INFO L82 PathProgramCache]: Analyzing trace with hash -760639326, now seen corresponding path program 1 times [2021-08-13 05:59:37,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:37,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787071991] [2021-08-13 05:59:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:37,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:37,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:37,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:37,644 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 05:59:37,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 05:59:37,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:37,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:37,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:37,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:37,685 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 05:59:37,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:37,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787071991] [2021-08-13 05:59:37,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787071991] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:37,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:37,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 05:59:37,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430533057] [2021-08-13 05:59:37,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 05:59:37,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 05:59:37,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 05:59:37,692 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-08-13 05:59:37,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 05:59:37,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:37,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-08-13 05:59:37,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:38,027 INFO L129 PetriNetUnfolder]: 362/1084 cut-off events. [2021-08-13 05:59:38,028 INFO L130 PetriNetUnfolder]: For 134/695 co-relation queries the response was YES. [2021-08-13 05:59:38,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1084 events. 362/1084 cut-off events. For 134/695 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8131 event pairs, 15 based on Foata normal form. 18/1074 useless extension candidates. Maximal degree in co-relation 2236. Up to 157 conditions per place. [2021-08-13 05:59:38,034 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 16 selfloop transitions, 5 changer transitions 153/231 dead transitions. [2021-08-13 05:59:38,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 231 transitions, 1149 flow [2021-08-13 05:59:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 05:59:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 05:59:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 911 transitions. [2021-08-13 05:59:38,037 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8651471984805318 [2021-08-13 05:59:38,037 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 911 transitions. [2021-08-13 05:59:38,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 911 transitions. [2021-08-13 05:59:38,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:38,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 911 transitions. [2021-08-13 05:59:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.07692307692308) internal successors, (911), 13 states have internal predecessors, (911), 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 05:59:38,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:38,043 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:38,044 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2021-08-13 05:59:38,044 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 231 transitions, 1149 flow [2021-08-13 05:59:38,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 05:59:38,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:38,044 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 05:59:38,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 05:59:38,045 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 90158115, now seen corresponding path program 1 times [2021-08-13 05:59:38,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:38,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396211746] [2021-08-13 05:59:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:38,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:38,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:38,160 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 05:59:38,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 05:59:38,170 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 05:59:38,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 05:59:38,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:38,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:38,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:38,208 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 05:59:38,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:38,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396211746] [2021-08-13 05:59:38,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396211746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:38,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:38,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 05:59:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100583823] [2021-08-13 05:59:38,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 05:59:38,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 05:59:38,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 05:59:38,212 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-08-13 05:59:38,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 231 transitions, 1149 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 05:59:38,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:38,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-08-13 05:59:38,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:38,567 INFO L129 PetriNetUnfolder]: 533/1599 cut-off events. [2021-08-13 05:59:38,568 INFO L130 PetriNetUnfolder]: For 315/2882 co-relation queries the response was YES. [2021-08-13 05:59:38,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1599 events. 533/1599 cut-off events. For 315/2882 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13623 event pairs, 5 based on Foata normal form. 21/1600 useless extension candidates. Maximal degree in co-relation 4394. Up to 247 conditions per place. [2021-08-13 05:59:38,578 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 18 selfloop transitions, 13 changer transitions 363/445 dead transitions. [2021-08-13 05:59:38,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 445 transitions, 3157 flow [2021-08-13 05:59:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 05:59:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 05:59:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 902 transitions. [2021-08-13 05:59:38,584 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8566001899335233 [2021-08-13 05:59:38,584 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 902 transitions. [2021-08-13 05:59:38,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 902 transitions. [2021-08-13 05:59:38,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:38,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 902 transitions. [2021-08-13 05:59:38,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.38461538461539) internal successors, (902), 13 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 05:59:38,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:38,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:38,589 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 36 predicate places. [2021-08-13 05:59:38,589 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 445 transitions, 3157 flow [2021-08-13 05:59:38,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 05:59:38,589 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:38,589 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 05:59:38,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 05:59:38,590 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1422840637, now seen corresponding path program 1 times [2021-08-13 05:59:38,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:38,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512184789] [2021-08-13 05:59:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:38,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:38,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:38,664 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 05:59:38,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 05:59:38,672 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 05:59:38,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 05:59:38,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:38,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:38,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:38,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:38,708 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 05:59:38,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:38,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512184789] [2021-08-13 05:59:38,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512184789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:38,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:38,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 05:59:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316933525] [2021-08-13 05:59:38,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 05:59:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 05:59:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 05:59:38,711 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-08-13 05:59:38,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 445 transitions, 3157 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 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 05:59:38,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:38,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-08-13 05:59:38,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:39,159 INFO L129 PetriNetUnfolder]: 577/1889 cut-off events. [2021-08-13 05:59:39,159 INFO L130 PetriNetUnfolder]: For 608/6966 co-relation queries the response was YES. [2021-08-13 05:59:39,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 1889 events. 577/1889 cut-off events. For 608/6966 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17421 event pairs, 0 based on Foata normal form. 48/1919 useless extension candidates. Maximal degree in co-relation 6264. Up to 310 conditions per place. [2021-08-13 05:59:39,170 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 24 selfloop transitions, 12 changer transitions 493/580 dead transitions. [2021-08-13 05:59:39,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 580 transitions, 5219 flow [2021-08-13 05:59:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 05:59:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 05:59:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 898 transitions. [2021-08-13 05:59:39,173 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8528015194681862 [2021-08-13 05:59:39,173 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 898 transitions. [2021-08-13 05:59:39,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 898 transitions. [2021-08-13 05:59:39,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:39,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 898 transitions. [2021-08-13 05:59:39,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.07692307692308) internal successors, (898), 13 states have internal predecessors, (898), 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 05:59:39,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:39,178 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 48 predicate places. [2021-08-13 05:59:39,178 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 580 transitions, 5219 flow [2021-08-13 05:59:39,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 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 05:59:39,179 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:39,179 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] [2021-08-13 05:59:39,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 05:59:39,179 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1449703934, now seen corresponding path program 1 times [2021-08-13 05:59:39,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:39,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217924643] [2021-08-13 05:59:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:39,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:39,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:39,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:39,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:39,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 05:59:39,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 05:59:39,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:39,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 05:59:39,300 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 05:59:39,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:39,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:39,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:39,312 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 05:59:39,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:39,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217924643] [2021-08-13 05:59:39,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217924643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:39,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:39,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 05:59:39,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750417307] [2021-08-13 05:59:39,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 05:59:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 05:59:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 05:59:39,316 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 05:59:39,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 580 transitions, 5219 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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 05:59:39,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:39,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 05:59:39,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:39,987 INFO L129 PetriNetUnfolder]: 1410/3835 cut-off events. [2021-08-13 05:59:39,987 INFO L130 PetriNetUnfolder]: For 892/1376 co-relation queries the response was YES. [2021-08-13 05:59:40,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10515 conditions, 3835 events. 1410/3835 cut-off events. For 892/1376 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38156 event pairs, 41 based on Foata normal form. 21/3598 useless extension candidates. Maximal degree in co-relation 10467. Up to 931 conditions per place. [2021-08-13 05:59:40,013 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 15 selfloop transitions, 15 changer transitions 309/451 dead transitions. [2021-08-13 05:59:40,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 451 transitions, 3801 flow [2021-08-13 05:59:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 05:59:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 05:59:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2021-08-13 05:59:40,016 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8802469135802469 [2021-08-13 05:59:40,016 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 713 transitions. [2021-08-13 05:59:40,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 713 transitions. [2021-08-13 05:59:40,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:40,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 713 transitions. [2021-08-13 05:59:40,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.3) internal successors, (713), 10 states have internal predecessors, (713), 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 05:59:40,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 05:59:40,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 05:59:40,024 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 57 predicate places. [2021-08-13 05:59:40,024 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 451 transitions, 3801 flow [2021-08-13 05:59:40,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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 05:59:40,024 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:40,025 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 05:59:40,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 05:59:40,025 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash -243567724, now seen corresponding path program 1 times [2021-08-13 05:59:40,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:40,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708028388] [2021-08-13 05:59:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:40,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:40,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:40,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:40,112 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 05:59:40,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 05:59:40,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 05:59:40,142 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 05:59:40,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:40,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:40,160 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 05:59:40,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:40,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708028388] [2021-08-13 05:59:40,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708028388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:40,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:40,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 05:59:40,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401001141] [2021-08-13 05:59:40,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 05:59:40,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:40,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 05:59:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 05:59:40,164 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 05:59:40,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 451 transitions, 3801 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 05:59:40,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:40,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 05:59:40,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:40,668 INFO L129 PetriNetUnfolder]: 955/2597 cut-off events. [2021-08-13 05:59:40,669 INFO L130 PetriNetUnfolder]: For 538/1625 co-relation queries the response was YES. [2021-08-13 05:59:40,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7395 conditions, 2597 events. 955/2597 cut-off events. For 538/1625 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 24686 event pairs, 0 based on Foata normal form. 233/2645 useless extension candidates. Maximal degree in co-relation 7344. Up to 750 conditions per place. [2021-08-13 05:59:40,685 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 18 selfloop transitions, 17 changer transitions 170/276 dead transitions. [2021-08-13 05:59:40,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 276 transitions, 2051 flow [2021-08-13 05:59:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 05:59:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 05:59:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 928 transitions. [2021-08-13 05:59:40,687 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8812915479582146 [2021-08-13 05:59:40,688 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 928 transitions. [2021-08-13 05:59:40,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 928 transitions. [2021-08-13 05:59:40,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:40,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 928 transitions. [2021-08-13 05:59:40,690 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 05:59:40,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:40,692 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 05:59:40,692 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 63 predicate places. [2021-08-13 05:59:40,692 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 276 transitions, 2051 flow [2021-08-13 05:59:40,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 05:59:40,693 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:40,693 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 05:59:40,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 05:59:40,693 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1475623407, now seen corresponding path program 1 times [2021-08-13 05:59:40,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:40,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971510180] [2021-08-13 05:59:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:40,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:40,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:40,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:40,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:40,762 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 05:59:40,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 05:59:40,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 05:59:40,792 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 05:59:40,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:40,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:40,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:40,802 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 05:59:40,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:40,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971510180] [2021-08-13 05:59:40,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971510180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:40,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:40,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 05:59:40,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710210574] [2021-08-13 05:59:40,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 05:59:40,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:40,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 05:59:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 05:59:40,804 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 05:59:40,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 276 transitions, 2051 flow. Second operand has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 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 05:59:40,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:40,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 05:59:40,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:41,352 INFO L129 PetriNetUnfolder]: 862/2184 cut-off events. [2021-08-13 05:59:41,352 INFO L130 PetriNetUnfolder]: For 591/2074 co-relation queries the response was YES. [2021-08-13 05:59:41,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 2184 events. 862/2184 cut-off events. For 591/2074 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 20297 event pairs, 0 based on Foata normal form. 283/2307 useless extension candidates. Maximal degree in co-relation 7497. Up to 694 conditions per place. [2021-08-13 05:59:41,366 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 4 selfloop transitions, 12 changer transitions 140/210 dead transitions. [2021-08-13 05:59:41,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 210 transitions, 1549 flow [2021-08-13 05:59:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 05:59:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 05:59:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1128 transitions. [2021-08-13 05:59:41,369 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2021-08-13 05:59:41,370 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1128 transitions. [2021-08-13 05:59:41,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1128 transitions. [2021-08-13 05:59:41,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:41,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1128 transitions. [2021-08-13 05:59:41,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 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 05:59:41,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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 05:59:41,376 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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 05:59:41,376 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 63 predicate places. [2021-08-13 05:59:41,376 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 210 transitions, 1549 flow [2021-08-13 05:59:41,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 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 05:59:41,376 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 05:59:41,376 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 05:59:41,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 05:59:41,377 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 05:59:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 05:59:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash 756144254, now seen corresponding path program 1 times [2021-08-13 05:59:41,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 05:59:41,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819809026] [2021-08-13 05:59:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 05:59:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 05:59:41,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:41,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:41,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:41,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 05:59:41,426 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 05:59:41,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 05:59:41,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:41,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:41,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:41,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 05:59:41,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 05:59:41,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 05:59:41,460 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 05:59:41,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 05:59:41,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819809026] [2021-08-13 05:59:41,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819809026] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 05:59:41,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 05:59:41,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 05:59:41,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926835973] [2021-08-13 05:59:41,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 05:59:41,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 05:59:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 05:59:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 05:59:41,464 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2021-08-13 05:59:41,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 210 transitions, 1549 flow. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 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 05:59:41,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 05:59:41,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2021-08-13 05:59:41,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 05:59:41,786 INFO L129 PetriNetUnfolder]: 1140/2817 cut-off events. [2021-08-13 05:59:41,786 INFO L130 PetriNetUnfolder]: For 789/1451 co-relation queries the response was YES. [2021-08-13 05:59:41,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 2817 events. 1140/2817 cut-off events. For 789/1451 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 27338 event pairs, 0 based on Foata normal form. 6/2634 useless extension candidates. Maximal degree in co-relation 9749. Up to 920 conditions per place. [2021-08-13 05:59:41,799 INFO L132 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 220/220 dead transitions. [2021-08-13 05:59:41,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 220 transitions, 1751 flow [2021-08-13 05:59:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 05:59:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 05:59:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2021-08-13 05:59:41,801 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8683127572016461 [2021-08-13 05:59:41,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 422 transitions. [2021-08-13 05:59:41,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 422 transitions. [2021-08-13 05:59:41,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 05:59:41,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 422 transitions. [2021-08-13 05:59:41,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 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 05:59:41,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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 05:59:41,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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 05:59:41,804 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2021-08-13 05:59:41,804 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 220 transitions, 1751 flow [2021-08-13 05:59:41,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 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 05:59:41,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown