/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 16:19:42,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 16:19:42,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 16:19:42,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 16:19:42,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 16:19:42,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 16:19:42,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 16:19:42,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 16:19:42,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 16:19:42,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 16:19:42,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 16:19:42,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 16:19:42,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 16:19:42,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 16:19:42,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 16:19:42,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 16:19:42,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 16:19:42,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 16:19:42,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 16:19:42,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 16:19:42,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 16:19:42,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 16:19:42,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 16:19:42,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 16:19:42,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 16:19:42,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 16:19:42,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 16:19:42,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 16:19:42,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 16:19:42,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 16:19:42,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 16:19:42,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 16:19:42,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 16:19:42,189 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 16:19:42,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 16:19:42,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 16:19:42,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 16:19:42,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 16:19:42,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:19:42,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 16:19:42,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 16:19:42,193 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 16:19:42,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 16:19:42,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 16:19:42,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 16:19:42,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 16:19:42,538 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 16:19:42,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-08-13 16:19:42,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953420314/34435703ef6943999b0729fcae528c1b/FLAG85482fbde [2021-08-13 16:19:43,152 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 16:19:43,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-08-13 16:19:43,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953420314/34435703ef6943999b0729fcae528c1b/FLAG85482fbde [2021-08-13 16:19:43,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953420314/34435703ef6943999b0729fcae528c1b [2021-08-13 16:19:43,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 16:19:43,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 16:19:43,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 16:19:43,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 16:19:43,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 16:19:43,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:19:43" (1/1) ... [2021-08-13 16:19:43,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d33a486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:43, skipping insertion in model container [2021-08-13 16:19:43,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:19:43" (1/1) ... [2021-08-13 16:19:43,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 16:19:43,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 16:19:43,813 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i[950,963] [2021-08-13 16:19:43,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:19:43,980 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 16:19:43,991 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i[950,963] [2021-08-13 16:19:44,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:19:44,104 INFO L208 MainTranslator]: Completed translation [2021-08-13 16:19:44,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44 WrapperNode [2021-08-13 16:19:44,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 16:19:44,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 16:19:44,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 16:19:44,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 16:19:44,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 16:19:44,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 16:19:44,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 16:19:44,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 16:19:44,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... [2021-08-13 16:19:44,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 16:19:44,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 16:19:44,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 16:19:44,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 16:19:44,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:19:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 16:19:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 16:19:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 16:19:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 16:19:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 16:19:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 16:19:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 16:19:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 16:19:44,256 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 16:19:44,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 16:19:44,687 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 16:19:44,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:19:44 BoogieIcfgContainer [2021-08-13 16:19:44,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 16:19:44,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 16:19:44,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 16:19:44,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 16:19:44,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:19:43" (1/3) ... [2021-08-13 16:19:44,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff56b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:19:44, skipping insertion in model container [2021-08-13 16:19:44,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:19:44" (2/3) ... [2021-08-13 16:19:44,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff56b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:19:44, skipping insertion in model container [2021-08-13 16:19:44,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:19:44" (3/3) ... [2021-08-13 16:19:44,697 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-08-13 16:19:44,703 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 16:19:44,703 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 16:19:44,704 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 16:19:44,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,752 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,770 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:19:44,774 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 16:19:44,795 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 16:19:44,824 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 16:19:44,824 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 16:19:44,824 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 16:19:44,824 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 16:19:44,824 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 16:19:44,825 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 16:19:44,825 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 16:19:44,825 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 16:19:44,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 16:19:44,889 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-08-13 16:19:44,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:19:44,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 16:19:44,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 16:19:44,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-08-13 16:19:44,934 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-08-13 16:19:44,934 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:19:44,934 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:44,935 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:44,935 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-08-13 16:19:44,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:44,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317264715] [2021-08-13 16:19:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:45,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:45,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:45,306 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:19:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:19:45,319 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:45,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:45,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:45,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:45,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:45,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317264715] [2021-08-13 16:19:45,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317264715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:45,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:45,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:45,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364340797] [2021-08-13 16:19:45,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:45,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:45,399 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 16:19:45,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:45,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 16:19:45,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:45,698 INFO L129 PetriNetUnfolder]: 87/302 cut-off events. [2021-08-13 16:19:45,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:19:45,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 302 events. 87/302 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1341 event pairs, 10 based on Foata normal form. 14/305 useless extension candidates. Maximal degree in co-relation 466. Up to 60 conditions per place. [2021-08-13 16:19:45,702 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-08-13 16:19:45,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-08-13 16:19:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:19:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:19:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-08-13 16:19:45,718 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-08-13 16:19:45,719 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-08-13 16:19:45,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-08-13 16:19:45,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:45,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-08-13 16:19:45,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,742 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,743 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-08-13 16:19:45,743 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 339 flow [2021-08-13 16:19:45,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,743 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:45,744 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] [2021-08-13 16:19:45,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 16:19:45,744 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1568456168, now seen corresponding path program 1 times [2021-08-13 16:19:45,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:45,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165154012] [2021-08-13 16:19:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:45,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:45,862 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:19:45,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:19:45,871 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:45,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:45,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:45,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:45,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:45,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:45,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:45,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165154012] [2021-08-13 16:19:45,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165154012] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:45,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:45,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:45,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454183247] [2021-08-13 16:19:45,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:45,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:45,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:45,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:45,919 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-08-13 16:19:45,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:45,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:45,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-08-13 16:19:45,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:46,349 INFO L129 PetriNetUnfolder]: 485/1246 cut-off events. [2021-08-13 16:19:46,350 INFO L130 PetriNetUnfolder]: For 84/521 co-relation queries the response was YES. [2021-08-13 16:19:46,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 1246 events. 485/1246 cut-off events. For 84/521 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9054 event pairs, 5 based on Foata normal form. 22/1249 useless extension candidates. Maximal degree in co-relation 2736. Up to 202 conditions per place. [2021-08-13 16:19:46,358 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 30 selfloop transitions, 18 changer transitions 236/335 dead transitions. [2021-08-13 16:19:46,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 335 transitions, 1797 flow [2021-08-13 16:19:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 16:19:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 16:19:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1180 transitions. [2021-08-13 16:19:46,364 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8464849354375896 [2021-08-13 16:19:46,364 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1180 transitions. [2021-08-13 16:19:46,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1180 transitions. [2021-08-13 16:19:46,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:46,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1180 transitions. [2021-08-13 16:19:46,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.41176470588235) internal successors, (1180), 17 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,375 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,375 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2021-08-13 16:19:46,375 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 335 transitions, 1797 flow [2021-08-13 16:19:46,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,376 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:46,376 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:46,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 16:19:46,376 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:46,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1925173879, now seen corresponding path program 1 times [2021-08-13 16:19:46,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:46,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152316933] [2021-08-13 16:19:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:46,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:46,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:46,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:46,443 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:46,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:46,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:46,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:46,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:46,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152316933] [2021-08-13 16:19:46,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152316933] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:46,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:46,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:46,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168495802] [2021-08-13 16:19:46,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:46,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:46,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:46,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:46,480 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-08-13 16:19:46,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 335 transitions, 1797 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:46,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-08-13 16:19:46,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:46,847 INFO L129 PetriNetUnfolder]: 522/1491 cut-off events. [2021-08-13 16:19:46,850 INFO L130 PetriNetUnfolder]: For 404/2408 co-relation queries the response was YES. [2021-08-13 16:19:46,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 1491 events. 522/1491 cut-off events. For 404/2408 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12081 event pairs, 10 based on Foata normal form. 34/1503 useless extension candidates. Maximal degree in co-relation 3964. Up to 227 conditions per place. [2021-08-13 16:19:46,857 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 14 selfloop transitions, 6 changer transitions 316/394 dead transitions. [2021-08-13 16:19:46,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 394 transitions, 2661 flow [2021-08-13 16:19:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:19:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:19:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 16:19:46,865 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-08-13 16:19:46,865 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 16:19:46,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 16:19:46,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:46,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 16:19:46,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,870 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,870 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 40 predicate places. [2021-08-13 16:19:46,870 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 394 transitions, 2661 flow [2021-08-13 16:19:46,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:46,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:46,871 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:46,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 16:19:46,871 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:46,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1723190985, now seen corresponding path program 1 times [2021-08-13 16:19:46,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:46,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442440608] [2021-08-13 16:19:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:46,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:46,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:46,981 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:46,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:46,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:47,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:47,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:47,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:47,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442440608] [2021-08-13 16:19:47,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442440608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:47,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:47,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:19:47,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633704585] [2021-08-13 16:19:47,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:19:47,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:47,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:19:47,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:19:47,024 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 82 [2021-08-13 16:19:47,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 394 transitions, 2661 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:47,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 82 [2021-08-13 16:19:47,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:47,334 INFO L129 PetriNetUnfolder]: 591/1683 cut-off events. [2021-08-13 16:19:47,334 INFO L130 PetriNetUnfolder]: For 1022/3225 co-relation queries the response was YES. [2021-08-13 16:19:47,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5304 conditions, 1683 events. 591/1683 cut-off events. For 1022/3225 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 14304 event pairs, 9 based on Foata normal form. 17/1681 useless extension candidates. Maximal degree in co-relation 5259. Up to 350 conditions per place. [2021-08-13 16:19:47,343 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 12 selfloop transitions, 5 changer transitions 408/487 dead transitions. [2021-08-13 16:19:47,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 487 transitions, 3915 flow [2021-08-13 16:19:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:19:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:19:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 653 transitions. [2021-08-13 16:19:47,346 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8848238482384824 [2021-08-13 16:19:47,346 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 653 transitions. [2021-08-13 16:19:47,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 653 transitions. [2021-08-13 16:19:47,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:47,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 653 transitions. [2021-08-13 16:19:47,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,349 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,349 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 48 predicate places. [2021-08-13 16:19:47,350 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 487 transitions, 3915 flow [2021-08-13 16:19:47,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,350 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:47,350 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:47,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 16:19:47,350 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1742570440, now seen corresponding path program 1 times [2021-08-13 16:19:47,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:47,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807026319] [2021-08-13 16:19:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:47,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:47,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:47,393 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:19:47,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:19:47,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:19:47,414 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:19:47,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:47,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:47,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:47,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:47,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807026319] [2021-08-13 16:19:47,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807026319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:47,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:47,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:19:47,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813592484] [2021-08-13 16:19:47,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:19:47,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:47,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:19:47,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:19:47,425 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:19:47,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 487 transitions, 3915 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:47,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:19:47,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:47,964 INFO L129 PetriNetUnfolder]: 1089/2963 cut-off events. [2021-08-13 16:19:47,965 INFO L130 PetriNetUnfolder]: For 870/1096 co-relation queries the response was YES. [2021-08-13 16:19:47,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7903 conditions, 2963 events. 1089/2963 cut-off events. For 870/1096 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 27847 event pairs, 38 based on Foata normal form. 20/2777 useless extension candidates. Maximal degree in co-relation 7855. Up to 677 conditions per place. [2021-08-13 16:19:47,986 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 21 selfloop transitions, 15 changer transitions 231/380 dead transitions. [2021-08-13 16:19:47,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 380 transitions, 2861 flow [2021-08-13 16:19:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 16:19:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 16:19:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-08-13 16:19:47,989 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-08-13 16:19:47,989 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-08-13 16:19:47,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-08-13 16:19:47,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:47,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-08-13 16:19:47,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,995 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,995 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 57 predicate places. [2021-08-13 16:19:47,995 INFO L482 AbstractCegarLoop]: Abstraction has has 133 places, 380 transitions, 2861 flow [2021-08-13 16:19:47,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:47,997 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:47,998 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:47,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 16:19:47,998 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1568796082, now seen corresponding path program 1 times [2021-08-13 16:19:47,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:47,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853692423] [2021-08-13 16:19:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:48,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:48,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:48,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:48,093 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:19:48,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:19:48,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:19:48,120 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:19:48,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:48,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:48,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:48,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853692423] [2021-08-13 16:19:48,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853692423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:48,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:48,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:48,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742679909] [2021-08-13 16:19:48,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:48,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:48,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:48,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:48,138 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:19:48,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 380 transitions, 2861 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:48,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:19:48,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:48,618 INFO L129 PetriNetUnfolder]: 699/1964 cut-off events. [2021-08-13 16:19:48,618 INFO L130 PetriNetUnfolder]: For 427/1254 co-relation queries the response was YES. [2021-08-13 16:19:48,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5464 conditions, 1964 events. 699/1964 cut-off events. For 427/1254 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 17749 event pairs, 0 based on Foata normal form. 189/2002 useless extension candidates. Maximal degree in co-relation 5413. Up to 542 conditions per place. [2021-08-13 16:19:48,631 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 22 selfloop transitions, 36 changer transitions 124/250 dead transitions. [2021-08-13 16:19:48,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 250 transitions, 1687 flow [2021-08-13 16:19:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:19:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:19:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-08-13 16:19:48,634 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-08-13 16:19:48,634 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-08-13 16:19:48,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-08-13 16:19:48,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:48,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-08-13 16:19:48,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,640 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,640 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 60 predicate places. [2021-08-13 16:19:48,640 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 250 transitions, 1687 flow [2021-08-13 16:19:48,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,640 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:48,640 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:48,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 16:19:48,641 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1712367069, now seen corresponding path program 1 times [2021-08-13 16:19:48,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:48,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481272937] [2021-08-13 16:19:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:48,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:48,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:48,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:48,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:48,740 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:19:48,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:19:48,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:19:48,769 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:19:48,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:48,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:48,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:48,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:48,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481272937] [2021-08-13 16:19:48,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481272937] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:48,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:48,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 16:19:48,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934147684] [2021-08-13 16:19:48,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 16:19:48,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:48,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 16:19:48,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 16:19:48,814 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 16:19:48,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 250 transitions, 1687 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:48,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:48,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 16:19:48,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:49,242 INFO L129 PetriNetUnfolder]: 630/1731 cut-off events. [2021-08-13 16:19:49,242 INFO L130 PetriNetUnfolder]: For 496/1705 co-relation queries the response was YES. [2021-08-13 16:19:49,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 1731 events. 630/1731 cut-off events. For 496/1705 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15815 event pairs, 0 based on Foata normal form. 230/1828 useless extension candidates. Maximal degree in co-relation 5660. Up to 503 conditions per place. [2021-08-13 16:19:49,255 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 19 selfloop transitions, 40 changer transitions 81/202 dead transitions. [2021-08-13 16:19:49,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 202 transitions, 1413 flow [2021-08-13 16:19:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 16:19:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 16:19:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-08-13 16:19:49,258 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-08-13 16:19:49,258 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-08-13 16:19:49,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-08-13 16:19:49,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:49,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-08-13 16:19:49,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,265 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,265 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 57 predicate places. [2021-08-13 16:19:49,265 INFO L482 AbstractCegarLoop]: Abstraction has has 133 places, 202 transitions, 1413 flow [2021-08-13 16:19:49,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,265 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:49,265 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:49,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 16:19:49,266 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:49,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:49,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1918740218, now seen corresponding path program 1 times [2021-08-13 16:19:49,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:49,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697685307] [2021-08-13 16:19:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:49,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:49,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:49,342 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:19:49,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:19:49,352 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:49,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:49,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:49,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:49,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:49,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:49,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697685307] [2021-08-13 16:19:49,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697685307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:49,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:49,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:49,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019088475] [2021-08-13 16:19:49,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:49,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:49,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:49,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:49,392 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 16:19:49,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 202 transitions, 1413 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:49,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 16:19:49,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:49,694 INFO L129 PetriNetUnfolder]: 823/2170 cut-off events. [2021-08-13 16:19:49,694 INFO L130 PetriNetUnfolder]: For 698/1228 co-relation queries the response was YES. [2021-08-13 16:19:49,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7313 conditions, 2170 events. 823/2170 cut-off events. For 698/1228 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 20697 event pairs, 0 based on Foata normal form. 9/2022 useless extension candidates. Maximal degree in co-relation 7254. Up to 660 conditions per place. [2021-08-13 16:19:49,708 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 9 selfloop transitions, 4 changer transitions 139/210 dead transitions. [2021-08-13 16:19:49,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 210 transitions, 1607 flow [2021-08-13 16:19:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 16:19:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 16:19:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2021-08-13 16:19:49,710 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8310104529616724 [2021-08-13 16:19:49,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2021-08-13 16:19:49,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2021-08-13 16:19:49,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:49,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2021-08-13 16:19:49,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,713 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 63 predicate places. [2021-08-13 16:19:49,713 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 210 transitions, 1607 flow [2021-08-13 16:19:49,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,713 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:19:49,713 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:19:49,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 16:19:49,714 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:19:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:19:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 133527576, now seen corresponding path program 2 times [2021-08-13 16:19:49,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:19:49,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442165568] [2021-08-13 16:19:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:19:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:19:49,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:49,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:19:49,746 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:19:49,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:19:49,756 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:19:49,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:19:49,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:49,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:19:49,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:19:49,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:19:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:19:49,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:19:49,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442165568] [2021-08-13 16:19:49,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442165568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:19:49,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:19:49,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:19:49,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682346458] [2021-08-13 16:19:49,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:19:49,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:19:49,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:19:49,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:19:49,793 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-08-13 16:19:49,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 210 transitions, 1607 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:49,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:19:49,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-08-13 16:19:49,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:19:50,205 INFO L129 PetriNetUnfolder]: 1062/2753 cut-off events. [2021-08-13 16:19:50,205 INFO L130 PetriNetUnfolder]: For 922/1637 co-relation queries the response was YES. [2021-08-13 16:19:50,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9394 conditions, 2753 events. 1062/2753 cut-off events. For 922/1637 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 27227 event pairs, 0 based on Foata normal form. 18/2554 useless extension candidates. Maximal degree in co-relation 9329. Up to 855 conditions per place. [2021-08-13 16:19:50,220 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 219/219 dead transitions. [2021-08-13 16:19:50,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 219 transitions, 1855 flow [2021-08-13 16:19:50,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 16:19:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 16:19:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 535 transitions. [2021-08-13 16:19:50,222 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8155487804878049 [2021-08-13 16:19:50,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 535 transitions. [2021-08-13 16:19:50,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 535 transitions. [2021-08-13 16:19:50,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:19:50,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 535 transitions. [2021-08-13 16:19:50,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:50,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:50,226 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:50,226 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 68 predicate places. [2021-08-13 16:19:50,226 INFO L482 AbstractCegarLoop]: Abstraction has has 144 places, 219 transitions, 1855 flow [2021-08-13 16:19:50,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:19:50,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown