/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/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:20:54,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:20:54,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:20:54,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 06:20:54,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 06:20:54,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 06:20:54,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 06:20:54,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 06:20:54,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 06:20:54,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 06:20:54,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 06:20:54,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 06:20:54,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:20:54,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:20:54,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:20:54,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:20:54,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:20:54,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:20:54,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:20:54,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:20:54,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:20:54,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:20:54,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:20:54,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:20:54,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:20:54,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:20:54,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:20:54,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:20:54,360 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 06:20:54,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:20:54,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:20:54,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:20:54,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:20:54,389 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:20:54,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:20:54,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:20:54,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:20:54,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:20:54,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:20:54,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:20:54,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:20:54,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:20:54,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:20:54,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:20:54,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:20:54,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:20:54,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:20:54,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:20:54,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:20:54,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:20:54,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:20:54,679 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:20:54,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2021-08-13 06:20:54,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6adbb/06e256ab757247d980a6fec6bca2afe2/FLAG987cd99e6 [2021-08-13 06:20:55,129 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:20:55,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2021-08-13 06:20:55,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6adbb/06e256ab757247d980a6fec6bca2afe2/FLAG987cd99e6 [2021-08-13 06:20:55,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6adbb/06e256ab757247d980a6fec6bca2afe2 [2021-08-13 06:20:55,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:20:55,180 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:20:55,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:20:55,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:20:55,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:20:55,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f00ea2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55, skipping insertion in model container [2021-08-13 06:20:55,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:20:55,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:20:55,399 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/safe027_pso.oepc.i[950,963] [2021-08-13 06:20:55,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:20:55,488 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:20:55,496 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/safe027_pso.oepc.i[950,963] [2021-08-13 06:20:55,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:20:55,558 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:20:55,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55 WrapperNode [2021-08-13 06:20:55,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:20:55,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:20:55,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:20:55,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:20:55,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:20:55,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:20:55,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:20:55,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:20:55,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (1/1) ... [2021-08-13 06:20:55,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:20:55,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:20:55,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:20:55,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:20:55,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (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 06:20:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:20:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:20:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:20:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:20:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:20:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 06:20:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-13 06:20:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:20:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:20:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:20:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:20:55,684 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 06:20:56,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:20:56,032 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:20:56,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:20:56 BoogieIcfgContainer [2021-08-13 06:20:56,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:20:56,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:20:56,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:20:56,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:20:56,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:20:55" (1/3) ... [2021-08-13 06:20:56,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b6ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:20:56, skipping insertion in model container [2021-08-13 06:20:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:20:55" (2/3) ... [2021-08-13 06:20:56,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b6ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:20:56, skipping insertion in model container [2021-08-13 06:20:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:20:56" (3/3) ... [2021-08-13 06:20:56,038 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2021-08-13 06:20:56,041 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:20:56,042 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:20:56,042 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:20:56,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,075 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,076 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,079 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,080 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,080 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,080 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,080 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,080 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,082 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,083 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,083 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,083 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:20:56,092 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:20:56,108 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 06:20:56,132 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:20:56,132 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:20:56,132 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:20:56,132 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:20:56,132 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:20:56,132 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:20:56,132 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:20:56,132 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:20:56,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2021-08-13 06:20:56,193 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2021-08-13 06:20:56,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:20:56,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-08-13 06:20:56,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2021-08-13 06:20:56,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2021-08-13 06:20:56,223 INFO L129 PetriNetUnfolder]: 1/80 cut-off events. [2021-08-13 06:20:56,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:20:56,224 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:56,232 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:56,233 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1244979450, now seen corresponding path program 1 times [2021-08-13 06:20:56,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:56,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400380631] [2021-08-13 06:20:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:56,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:56,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:56,631 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:20:56,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:20:56,643 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:20:56,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:20:56,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:56,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:56,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:56,676 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 06:20:56,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:56,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400380631] [2021-08-13 06:20:56,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400380631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:56,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:56,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:20:56,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063245701] [2021-08-13 06:20:56,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:20:56,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:56,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:20:56,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:20:56,694 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2021-08-13 06:20:56,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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 06:20:56,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:56,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2021-08-13 06:20:56,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:20:56,838 INFO L129 PetriNetUnfolder]: 81/255 cut-off events. [2021-08-13 06:20:56,839 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:20:56,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 255 events. 81/255 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 869 event pairs, 15 based on Foata normal form. 11/256 useless extension candidates. Maximal degree in co-relation 393. Up to 77 conditions per place. [2021-08-13 06:20:56,841 INFO L132 encePairwiseOnDemand]: 90/99 looper letters, 12 selfloop transitions, 4 changer transitions 25/107 dead transitions. [2021-08-13 06:20:56,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 308 flow [2021-08-13 06:20:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:20:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:20:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 855 transitions. [2021-08-13 06:20:56,858 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-08-13 06:20:56,858 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 855 transitions. [2021-08-13 06:20:56,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 855 transitions. [2021-08-13 06:20:56,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:20:56,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 855 transitions. [2021-08-13 06:20:56,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.5) internal successors, (855), 10 states have internal predecessors, (855), 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 06:20:56,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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 06:20:56,873 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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 06:20:56,873 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 9 predicate places. [2021-08-13 06:20:56,874 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 308 flow [2021-08-13 06:20:56,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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 06:20:56,874 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:56,874 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:56,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:20:56,874 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:56,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:56,875 INFO L82 PathProgramCache]: Analyzing trace with hash 251096935, now seen corresponding path program 1 times [2021-08-13 06:20:56,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:56,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923717104] [2021-08-13 06:20:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:56,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:56,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:56,947 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:20:56,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:20:56,956 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:20:56,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:20:56,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:56,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:56,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:20:56,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:56,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923717104] [2021-08-13 06:20:56,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923717104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:56,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:56,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:20:56,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340889057] [2021-08-13 06:20:56,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:20:56,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:56,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:20:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:20:56,996 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-08-13 06:20:56,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 06:20:56,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:56,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-08-13 06:20:56,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:20:57,417 INFO L129 PetriNetUnfolder]: 363/880 cut-off events. [2021-08-13 06:20:57,417 INFO L130 PetriNetUnfolder]: For 68/448 co-relation queries the response was YES. [2021-08-13 06:20:57,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 880 events. 363/880 cut-off events. For 68/448 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5337 event pairs, 15 based on Foata normal form. 18/874 useless extension candidates. Maximal degree in co-relation 1943. Up to 279 conditions per place. [2021-08-13 06:20:57,423 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 22 selfloop transitions, 14 changer transitions 130/230 dead transitions. [2021-08-13 06:20:57,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 230 transitions, 1118 flow [2021-08-13 06:20:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 06:20:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 06:20:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1441 transitions. [2021-08-13 06:20:57,426 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8562091503267973 [2021-08-13 06:20:57,426 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1441 transitions. [2021-08-13 06:20:57,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1441 transitions. [2021-08-13 06:20:57,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:20:57,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1441 transitions. [2021-08-13 06:20:57,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.76470588235294) internal successors, (1441), 17 states have internal predecessors, (1441), 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 06:20:57,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 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 06:20:57,431 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 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 06:20:57,432 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 25 predicate places. [2021-08-13 06:20:57,432 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 230 transitions, 1118 flow [2021-08-13 06:20:57,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 06:20:57,432 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:57,432 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:57,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:20:57,433 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash 890733040, now seen corresponding path program 1 times [2021-08-13 06:20:57,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:57,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885948371] [2021-08-13 06:20:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:57,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:57,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:57,476 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:20:57,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:20:57,483 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:20:57,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:20:57,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:57,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:57,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:57,508 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 06:20:57,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:57,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885948371] [2021-08-13 06:20:57,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885948371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:57,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:57,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:20:57,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788707114] [2021-08-13 06:20:57,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:20:57,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:20:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:20:57,539 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2021-08-13 06:20:57,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 230 transitions, 1118 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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 06:20:57,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:57,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2021-08-13 06:20:57,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:20:57,717 INFO L129 PetriNetUnfolder]: 487/1274 cut-off events. [2021-08-13 06:20:57,717 INFO L130 PetriNetUnfolder]: For 497/1511 co-relation queries the response was YES. [2021-08-13 06:20:57,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 1274 events. 487/1274 cut-off events. For 497/1511 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9209 event pairs, 12 based on Foata normal form. 9/1267 useless extension candidates. Maximal degree in co-relation 3414. Up to 357 conditions per place. [2021-08-13 06:20:57,724 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 31 selfloop transitions, 7 changer transitions 289/394 dead transitions. [2021-08-13 06:20:57,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 394 transitions, 2744 flow [2021-08-13 06:20:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:20:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:20:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 772 transitions. [2021-08-13 06:20:57,726 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8664421997755332 [2021-08-13 06:20:57,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 772 transitions. [2021-08-13 06:20:57,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 772 transitions. [2021-08-13 06:20:57,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:20:57,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 772 transitions. [2021-08-13 06:20:57,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.77777777777777) internal successors, (772), 9 states have internal predecessors, (772), 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 06:20:57,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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 06:20:57,729 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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 06:20:57,730 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2021-08-13 06:20:57,730 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 394 transitions, 2744 flow [2021-08-13 06:20:57,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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 06:20:57,730 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:57,730 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:57,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:20:57,730 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1587474572, now seen corresponding path program 1 times [2021-08-13 06:20:57,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:57,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717496090] [2021-08-13 06:20:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:57,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:57,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:57,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:57,778 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:20:57,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:20:57,786 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:20:57,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:20:57,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:57,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:57,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:57,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:57,813 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 06:20:57,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:57,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717496090] [2021-08-13 06:20:57,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717496090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:57,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:57,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:20:57,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580886283] [2021-08-13 06:20:57,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:20:57,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:20:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:20:57,815 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-08-13 06:20:57,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 394 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 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 06:20:57,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:57,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-08-13 06:20:57,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:20:58,144 INFO L129 PetriNetUnfolder]: 521/1272 cut-off events. [2021-08-13 06:20:58,144 INFO L130 PetriNetUnfolder]: For 583/5123 co-relation queries the response was YES. [2021-08-13 06:20:58,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 1272 events. 521/1272 cut-off events. For 583/5123 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9021 event pairs, 12 based on Foata normal form. 34/1287 useless extension candidates. Maximal degree in co-relation 4625. Up to 460 conditions per place. [2021-08-13 06:20:58,151 INFO L132 encePairwiseOnDemand]: 89/99 looper letters, 15 selfloop transitions, 7 changer transitions 369/455 dead transitions. [2021-08-13 06:20:58,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 455 transitions, 3990 flow [2021-08-13 06:20:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-13 06:20:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-08-13 06:20:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1178 transitions. [2021-08-13 06:20:58,153 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.84992784992785 [2021-08-13 06:20:58,153 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1178 transitions. [2021-08-13 06:20:58,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1178 transitions. [2021-08-13 06:20:58,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:20:58,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1178 transitions. [2021-08-13 06:20:58,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.14285714285714) internal successors, (1178), 14 states have internal predecessors, (1178), 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 06:20:58,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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 06:20:58,157 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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 06:20:58,158 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 46 predicate places. [2021-08-13 06:20:58,158 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 455 transitions, 3990 flow [2021-08-13 06:20:58,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 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 06:20:58,158 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:58,158 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:58,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:20:58,158 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2138458533, now seen corresponding path program 1 times [2021-08-13 06:20:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:58,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465392820] [2021-08-13 06:20:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:58,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:58,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:58,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:58,201 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:20:58,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:20:58,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:58,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:58,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:58,228 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 06:20:58,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:58,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465392820] [2021-08-13 06:20:58,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465392820] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:58,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:58,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:20:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060618015] [2021-08-13 06:20:58,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:20:58,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:20:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:20:58,230 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-08-13 06:20:58,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 455 transitions, 3990 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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 06:20:58,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:58,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-08-13 06:20:58,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:20:58,822 INFO L129 PetriNetUnfolder]: 1716/3586 cut-off events. [2021-08-13 06:20:58,822 INFO L130 PetriNetUnfolder]: For 3719/14968 co-relation queries the response was YES. [2021-08-13 06:20:58,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14638 conditions, 3586 events. 1716/3586 cut-off events. For 3719/14968 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 30053 event pairs, 15 based on Foata normal form. 24/3551 useless extension candidates. Maximal degree in co-relation 14578. Up to 1234 conditions per place. [2021-08-13 06:20:58,842 INFO L132 encePairwiseOnDemand]: 91/99 looper letters, 9 selfloop transitions, 6 changer transitions 790/877 dead transitions. [2021-08-13 06:20:58,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 877 transitions, 9572 flow [2021-08-13 06:20:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:20:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:20:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1137 transitions. [2021-08-13 06:20:58,844 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8834498834498834 [2021-08-13 06:20:58,844 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1137 transitions. [2021-08-13 06:20:58,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1137 transitions. [2021-08-13 06:20:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:20:58,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1137 transitions. [2021-08-13 06:20:58,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.46153846153847) internal successors, (1137), 13 states have internal predecessors, (1137), 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 06:20:58,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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 06:20:58,848 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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 06:20:58,848 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 58 predicate places. [2021-08-13 06:20:58,848 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 877 transitions, 9572 flow [2021-08-13 06:20:58,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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 06:20:58,849 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:20:58,849 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:20:58,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 06:20:58,849 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:20:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:20:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1404118512, now seen corresponding path program 1 times [2021-08-13 06:20:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:20:58,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140951629] [2021-08-13 06:20:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:20:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:20:58,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:58,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:20:58,887 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:20:58,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:20:58,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:20:58,922 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:20:58,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:20:58,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:20:58,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:20:58,932 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 06:20:58,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:20:58,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140951629] [2021-08-13 06:20:58,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140951629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:20:58,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:20:58,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:20:58,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659701341] [2021-08-13 06:20:58,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:20:58,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:20:58,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:20:58,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:20:58,934 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-08-13 06:20:58,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 877 transitions, 9572 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 06:20:58,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:20:58,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-08-13 06:20:58,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:01,548 INFO L129 PetriNetUnfolder]: 5729/11461 cut-off events. [2021-08-13 06:21:01,548 INFO L130 PetriNetUnfolder]: For 6127/11300 co-relation queries the response was YES. [2021-08-13 06:21:01,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37631 conditions, 11461 events. 5729/11461 cut-off events. For 6127/11300 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 113020 event pairs, 184 based on Foata normal form. 44/10630 useless extension candidates. Maximal degree in co-relation 37568. Up to 3013 conditions per place. [2021-08-13 06:21:01,629 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 29 selfloop transitions, 20 changer transitions 287/786 dead transitions. [2021-08-13 06:21:01,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 786 transitions, 8208 flow [2021-08-13 06:21:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:21:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:21:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 891 transitions. [2021-08-13 06:21:01,631 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-08-13 06:21:01,631 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 891 transitions. [2021-08-13 06:21:01,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 891 transitions. [2021-08-13 06:21:01,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:01,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 891 transitions. [2021-08-13 06:21:01,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.1) internal successors, (891), 10 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 06:21:01,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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 06:21:01,635 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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 06:21:01,635 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 67 predicate places. [2021-08-13 06:21:01,635 INFO L482 AbstractCegarLoop]: Abstraction has has 160 places, 786 transitions, 8208 flow [2021-08-13 06:21:01,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 06:21:01,635 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:21:01,635 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:21:01,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 06:21:01,636 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:21:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:21:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1473842502, now seen corresponding path program 1 times [2021-08-13 06:21:01,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:21:01,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542660745] [2021-08-13 06:21:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:21:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:21:01,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:01,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:01,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:01,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:01,675 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:21:01,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:21:01,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:01,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:21:01,693 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:21:01,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:01,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:01,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:01,700 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 06:21:01,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:21:01,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542660745] [2021-08-13 06:21:01,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542660745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:21:01,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:21:01,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:21:01,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551833162] [2021-08-13 06:21:01,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:21:01,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:21:01,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:21:01,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:21:01,702 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-08-13 06:21:01,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 786 transitions, 8208 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 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 06:21:01,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:21:01,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-08-13 06:21:01,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:03,346 INFO L129 PetriNetUnfolder]: 4104/8591 cut-off events. [2021-08-13 06:21:03,347 INFO L130 PetriNetUnfolder]: For 2979/10191 co-relation queries the response was YES. [2021-08-13 06:21:03,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27631 conditions, 8591 events. 4104/8591 cut-off events. For 2979/10191 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 84549 event pairs, 44 based on Foata normal form. 602/8489 useless extension candidates. Maximal degree in co-relation 27565. Up to 2649 conditions per place. [2021-08-13 06:21:03,401 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 52 selfloop transitions, 54 changer transitions 236/572 dead transitions. [2021-08-13 06:21:03,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 572 transitions, 5486 flow [2021-08-13 06:21:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:21:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:21:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1160 transitions. [2021-08-13 06:21:03,404 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2021-08-13 06:21:03,404 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1160 transitions. [2021-08-13 06:21:03,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1160 transitions. [2021-08-13 06:21:03,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:03,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1160 transitions. [2021-08-13 06:21:03,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.23076923076923) internal successors, (1160), 13 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:21:03,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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 06:21:03,409 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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 06:21:03,409 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 79 predicate places. [2021-08-13 06:21:03,409 INFO L482 AbstractCegarLoop]: Abstraction has has 172 places, 572 transitions, 5486 flow [2021-08-13 06:21:03,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 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 06:21:03,410 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:21:03,410 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:21:03,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 06:21:03,410 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:21:03,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:21:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2017068101, now seen corresponding path program 1 times [2021-08-13 06:21:03,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:21:03,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716018848] [2021-08-13 06:21:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:21:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:21:03,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:03,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:03,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:03,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:03,456 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:21:03,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:21:03,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:21:03,478 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:21:03,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:03,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:03,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:03,487 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 06:21:03,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:21:03,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716018848] [2021-08-13 06:21:03,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716018848] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:21:03,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:21:03,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:21:03,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624627316] [2021-08-13 06:21:03,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:21:03,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:21:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:21:03,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:21:03,489 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-08-13 06:21:03,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 572 transitions, 5486 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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 06:21:03,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:21:03,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-08-13 06:21:03,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:04,682 INFO L129 PetriNetUnfolder]: 3389/7061 cut-off events. [2021-08-13 06:21:04,682 INFO L130 PetriNetUnfolder]: For 2274/14996 co-relation queries the response was YES. [2021-08-13 06:21:04,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25472 conditions, 7061 events. 3389/7061 cut-off events. For 2274/14996 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 68984 event pairs, 5 based on Foata normal form. 903/7346 useless extension candidates. Maximal degree in co-relation 25403. Up to 2556 conditions per place. [2021-08-13 06:21:04,732 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 33 selfloop transitions, 106 changer transitions 171/409 dead transitions. [2021-08-13 06:21:04,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 409 transitions, 3560 flow [2021-08-13 06:21:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 06:21:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 06:21:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1429 transitions. [2021-08-13 06:21:04,735 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9021464646464646 [2021-08-13 06:21:04,735 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1429 transitions. [2021-08-13 06:21:04,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1429 transitions. [2021-08-13 06:21:04,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:04,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1429 transitions. [2021-08-13 06:21:04,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 89.3125) internal successors, (1429), 16 states have internal predecessors, (1429), 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 06:21:04,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 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 06:21:04,743 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 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 06:21:04,744 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 88 predicate places. [2021-08-13 06:21:04,744 INFO L482 AbstractCegarLoop]: Abstraction has has 181 places, 409 transitions, 3560 flow [2021-08-13 06:21:04,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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 06:21:04,744 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:21:04,744 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:21:04,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 06:21:04,744 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:21:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:21:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash -453489180, now seen corresponding path program 1 times [2021-08-13 06:21:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:21:04,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079682810] [2021-08-13 06:21:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:21:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:21:04,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:04,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:04,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:04,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:04,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:04,916 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:21:04,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:21:04,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:21:04,941 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:21:04,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:04,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:04,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:04,949 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 06:21:04,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:21:04,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079682810] [2021-08-13 06:21:04,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079682810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:21:04,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:21:04,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 06:21:04,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745404292] [2021-08-13 06:21:04,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 06:21:04,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:21:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 06:21:04,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 06:21:04,951 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-08-13 06:21:04,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 409 transitions, 3560 flow. Second operand has 9 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 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 06:21:04,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:21:04,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-08-13 06:21:04,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:05,901 INFO L129 PetriNetUnfolder]: 3282/7003 cut-off events. [2021-08-13 06:21:05,902 INFO L130 PetriNetUnfolder]: For 3423/18860 co-relation queries the response was YES. [2021-08-13 06:21:05,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29543 conditions, 7003 events. 3282/7003 cut-off events. For 3423/18860 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 70667 event pairs, 0 based on Foata normal form. 963/7378 useless extension candidates. Maximal degree in co-relation 29471. Up to 2509 conditions per place. [2021-08-13 06:21:05,940 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 28 selfloop transitions, 111 changer transitions 97/335 dead transitions. [2021-08-13 06:21:05,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 335 transitions, 3046 flow [2021-08-13 06:21:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-13 06:21:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-08-13 06:21:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1678 transitions. [2021-08-13 06:21:05,943 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8920786815523658 [2021-08-13 06:21:05,943 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1678 transitions. [2021-08-13 06:21:05,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1678 transitions. [2021-08-13 06:21:05,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:05,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1678 transitions. [2021-08-13 06:21:05,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.3157894736842) internal successors, (1678), 19 states have internal predecessors, (1678), 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 06:21:05,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 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 06:21:05,948 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 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 06:21:05,948 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 76 predicate places. [2021-08-13 06:21:05,948 INFO L482 AbstractCegarLoop]: Abstraction has has 169 places, 335 transitions, 3046 flow [2021-08-13 06:21:05,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 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 06:21:05,948 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:21:05,948 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:21:05,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 06:21:05,949 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:21:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:21:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1543792499, now seen corresponding path program 1 times [2021-08-13 06:21:05,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:21:05,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479848177] [2021-08-13 06:21:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:21:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:21:05,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:05,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:05,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:05,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:05,977 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:21:05,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:21:05,984 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:21:05,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:21:05,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:05,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:06,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:06,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:06,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:06,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:06,010 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 06:21:06,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:21:06,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479848177] [2021-08-13 06:21:06,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479848177] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:21:06,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:21:06,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:21:06,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384856049] [2021-08-13 06:21:06,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:21:06,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:21:06,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:21:06,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:21:06,011 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-08-13 06:21:06,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 335 transitions, 3046 flow. Second operand has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:21:06,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:21:06,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-08-13 06:21:06,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:07,036 INFO L129 PetriNetUnfolder]: 5204/10853 cut-off events. [2021-08-13 06:21:07,036 INFO L130 PetriNetUnfolder]: For 4872/12209 co-relation queries the response was YES. [2021-08-13 06:21:07,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46536 conditions, 10853 events. 5204/10853 cut-off events. For 4872/12209 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 115115 event pairs, 0 based on Foata normal form. 20/10110 useless extension candidates. Maximal degree in co-relation 46457. Up to 4016 conditions per place. [2021-08-13 06:21:07,202 INFO L132 encePairwiseOnDemand]: 87/99 looper letters, 23 selfloop transitions, 11 changer transitions 142/368 dead transitions. [2021-08-13 06:21:07,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 368 transitions, 3620 flow [2021-08-13 06:21:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 06:21:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 06:21:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 659 transitions. [2021-08-13 06:21:07,216 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8320707070707071 [2021-08-13 06:21:07,216 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 659 transitions. [2021-08-13 06:21:07,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 659 transitions. [2021-08-13 06:21:07,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:07,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 659 transitions. [2021-08-13 06:21:07,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.375) internal successors, (659), 8 states have internal predecessors, (659), 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 06:21:07,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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 06:21:07,221 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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 06:21:07,221 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 83 predicate places. [2021-08-13 06:21:07,221 INFO L482 AbstractCegarLoop]: Abstraction has has 176 places, 368 transitions, 3620 flow [2021-08-13 06:21:07,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:21:07,222 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:21:07,222 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:21:07,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 06:21:07,222 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:21:07,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:21:07,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1424929805, now seen corresponding path program 2 times [2021-08-13 06:21:07,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:21:07,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576854750] [2021-08-13 06:21:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:21:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:21:07,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:07,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:07,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:07,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:21:07,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:21:07,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:21:07,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:21:07,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:21:07,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:07,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:07,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:07,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:21:07,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:21:07,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:21:07,299 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 06:21:07,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:21:07,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576854750] [2021-08-13 06:21:07,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576854750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:21:07,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:21:07,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:21:07,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544193413] [2021-08-13 06:21:07,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:21:07,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:21:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:21:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:21:07,301 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-08-13 06:21:07,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 368 transitions, 3620 flow. Second operand has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:21:07,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:21:07,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-08-13 06:21:07,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:21:08,646 INFO L129 PetriNetUnfolder]: 6361/13445 cut-off events. [2021-08-13 06:21:08,646 INFO L130 PetriNetUnfolder]: For 6146/15568 co-relation queries the response was YES. [2021-08-13 06:21:08,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57579 conditions, 13445 events. 6361/13445 cut-off events. For 6146/15568 co-relation queries the response was YES. Maximal size of possible extension queue 1885. Compared 148605 event pairs, 0 based on Foata normal form. 64/12425 useless extension candidates. Maximal degree in co-relation 57493. Up to 4982 conditions per place. [2021-08-13 06:21:08,728 INFO L132 encePairwiseOnDemand]: 87/99 looper letters, 0 selfloop transitions, 0 changer transitions 386/386 dead transitions. [2021-08-13 06:21:08,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 386 transitions, 4126 flow [2021-08-13 06:21:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 06:21:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 06:21:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 658 transitions. [2021-08-13 06:21:08,729 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8308080808080808 [2021-08-13 06:21:08,730 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 658 transitions. [2021-08-13 06:21:08,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 658 transitions. [2021-08-13 06:21:08,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:21:08,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 658 transitions. [2021-08-13 06:21:08,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.25) internal successors, (658), 8 states have internal predecessors, (658), 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 06:21:08,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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 06:21:08,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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 06:21:08,732 INFO L348 CegarLoopForPetriNet]: 93 programPoint places, 88 predicate places. [2021-08-13 06:21:08,732 INFO L482 AbstractCegarLoop]: Abstraction has has 181 places, 386 transitions, 4126 flow [2021-08-13 06:21:08,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:21:08,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown