/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:19:18,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:19:18,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:19:18,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 06:19:18,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 06:19:18,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 06:19:18,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 06:19:18,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 06:19:18,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 06:19:18,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 06:19:18,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 06:19:18,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 06:19:18,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:19:18,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:19:18,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:19:18,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:19:18,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:19:18,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:19:18,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:19:18,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:19:18,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:19:18,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:19:18,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:19:18,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:19:18,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:19:18,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 06:19:18,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 06:19:18,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 06:19:18,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 06:19:18,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 06:19:18,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 06:19:18,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 06:19:18,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 06:19:18,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:19:18,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:19:18,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:19:18,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 06:19:18,400 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:19:18,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:19:18,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:19:18,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:19:18,402 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:19:18,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:19:18,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:19:18,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:19:18,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:19:18,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:19:18,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:19:18,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:19:18,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:19:18,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:19:18,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:19:18,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:19:18,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:19:18,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:19:18,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:19:18,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:19:18,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:19:18,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:19:18,406 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:19:18,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:19:18,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:19:18,407 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:19:18,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:19:18,407 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:19:18,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:19:18,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:19:18,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:19:18,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:19:18,739 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:19:18,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-08-13 06:19:18,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc007256f/03b15cbb4b174591b00f9f50d41204a5/FLAG3b0db1323 [2021-08-13 06:19:19,422 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:19:19,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-08-13 06:19:19,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc007256f/03b15cbb4b174591b00f9f50d41204a5/FLAG3b0db1323 [2021-08-13 06:19:19,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc007256f/03b15cbb4b174591b00f9f50d41204a5 [2021-08-13 06:19:19,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:19:19,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:19:19,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:19:19,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:19:19,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:19:19,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:19:19" (1/1) ... [2021-08-13 06:19:19,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71984e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:19, skipping insertion in model container [2021-08-13 06:19:19,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:19:19" (1/1) ... [2021-08-13 06:19:19,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:19:19,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:19:19,902 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/safe026_tso.oepc.i[950,963] [2021-08-13 06:19:20,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:19:20,030 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:19:20,040 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/safe026_tso.oepc.i[950,963] [2021-08-13 06:19:20,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:19:20,120 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:19:20,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20 WrapperNode [2021-08-13 06:19:20,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:19:20,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:19:20,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:19:20,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:19:20,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:19:20,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:19:20,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:19:20,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:19:20,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... [2021-08-13 06:19:20,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:19:20,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:19:20,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:19:20,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:19:20,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:19:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:19:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:19:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:19:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:19:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:19:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:19:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:19:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:19:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 06:19:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 06:19:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:19:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:19:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:19:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:19:20,279 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 06:19:20,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:19:20,742 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:19:20,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:19:20 BoogieIcfgContainer [2021-08-13 06:19:20,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:19:20,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:19:20,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:19:20,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:19:20,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:19:19" (1/3) ... [2021-08-13 06:19:20,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45541516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:19:20, skipping insertion in model container [2021-08-13 06:19:20,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:19:20" (2/3) ... [2021-08-13 06:19:20,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45541516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:19:20, skipping insertion in model container [2021-08-13 06:19:20,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:19:20" (3/3) ... [2021-08-13 06:19:20,753 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-08-13 06:19:20,758 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:19:20,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:19:20,760 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:19:20,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,835 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,835 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:19:20,836 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:19:20,857 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 06:19:20,876 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:19:20,876 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:19:20,877 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:19:20,877 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:19:20,877 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:19:20,877 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:19:20,877 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:19:20,877 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:19:20,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 06:19:20,918 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-08-13 06:19:20,918 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:19:20,921 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 44 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 06:19:20,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 06:19:20,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-08-13 06:19:20,940 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-08-13 06:19:20,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:19:20,940 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:20,941 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 06:19:20,941 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1683349452, now seen corresponding path program 1 times [2021-08-13 06:19:20,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:20,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613727999] [2021-08-13 06:19:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:21,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:21,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:21,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:21,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 06:19:21,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 06:19:21,262 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:19:21,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:19:21,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:21,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:21,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:21,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:21,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:21,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:21,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:21,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613727999] [2021-08-13 06:19:21,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613727999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:21,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:21,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:19:21,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770730053] [2021-08-13 06:19:21,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:19:21,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:19:21,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:19:21,405 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 06:19:21,422 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 06:19:21,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:21,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 06:19:21,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:21,847 INFO L129 PetriNetUnfolder]: 173/508 cut-off events. [2021-08-13 06:19:21,847 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:19:21,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 508 events. 173/508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2859 event pairs, 21 based on Foata normal form. 21/513 useless extension candidates. Maximal degree in co-relation 803. Up to 117 conditions per place. [2021-08-13 06:19:21,855 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-08-13 06:19:21,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-08-13 06:19:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:19:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:19:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-08-13 06:19:21,887 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-08-13 06:19:21,887 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-08-13 06:19:21,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-08-13 06:19:21,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:21,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-08-13 06:19:21,899 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 06:19:21,907 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 06:19:21,908 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 06:19:21,909 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-08-13 06:19:21,909 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 339 flow [2021-08-13 06:19:21,910 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 06:19:21,910 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:21,910 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 06:19:21,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:19:21,911 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1410993197, now seen corresponding path program 1 times [2021-08-13 06:19:21,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:21,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624102176] [2021-08-13 06:19:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:22,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:22,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:22,044 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 06:19:22,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 06:19:22,058 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:19:22,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:19:22,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:22,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:22,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:22,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:22,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624102176] [2021-08-13 06:19:22,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624102176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:22,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:22,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:19:22,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390810546] [2021-08-13 06:19:22,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:19:22,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:19:22,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:19:22,129 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 06:19:22,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:22,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:22,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 06:19:22,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:22,451 INFO L129 PetriNetUnfolder]: 213/605 cut-off events. [2021-08-13 06:19:22,451 INFO L130 PetriNetUnfolder]: For 25/257 co-relation queries the response was YES. [2021-08-13 06:19:22,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 605 events. 213/605 cut-off events. For 25/257 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3780 event pairs, 15 based on Foata normal form. 14/607 useless extension candidates. Maximal degree in co-relation 1422. Up to 141 conditions per place. [2021-08-13 06:19:22,455 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 13 changer transitions 131/212 dead transitions. [2021-08-13 06:19:22,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 212 transitions, 1069 flow [2021-08-13 06:19:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:19:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:19:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 06:19:22,459 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-08-13 06:19:22,459 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 06:19:22,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 06:19:22,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:22,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 06:19:22,462 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 06:19:22,465 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 06:19:22,465 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 06:19:22,466 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2021-08-13 06:19:22,466 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 212 transitions, 1069 flow [2021-08-13 06:19:22,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:22,466 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:22,467 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 06:19:22,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:19:22,467 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash -640728756, now seen corresponding path program 1 times [2021-08-13 06:19:22,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:22,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415780063] [2021-08-13 06:19:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:22,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:22,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:22,526 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:19:22,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:19:22,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:19:22,557 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:19:22,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:22,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:22,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:22,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:22,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415780063] [2021-08-13 06:19:22,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415780063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:22,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:22,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:19:22,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534062466] [2021-08-13 06:19:22,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:19:22,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:19:22,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:19:22,578 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 06:19:22,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 212 transitions, 1069 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 06:19:22,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:22,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 06:19:22,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:22,878 INFO L129 PetriNetUnfolder]: 559/1458 cut-off events. [2021-08-13 06:19:22,879 INFO L130 PetriNetUnfolder]: For 51/129 co-relation queries the response was YES. [2021-08-13 06:19:22,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 1458 events. 559/1458 cut-off events. For 51/129 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11641 event pairs, 35 based on Foata normal form. 0/1347 useless extension candidates. Maximal degree in co-relation 3172. Up to 321 conditions per place. [2021-08-13 06:19:22,894 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 24 selfloop transitions, 17 changer transitions 34/199 dead transitions. [2021-08-13 06:19:22,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 953 flow [2021-08-13 06:19:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:19:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:19:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-08-13 06:19:22,907 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-08-13 06:19:22,907 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-08-13 06:19:22,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-08-13 06:19:22,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:22,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-08-13 06:19:22,909 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 06:19:22,911 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 06:19:22,912 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 06:19:22,912 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2021-08-13 06:19:22,912 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 199 transitions, 953 flow [2021-08-13 06:19:22,912 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 06:19:22,912 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:22,912 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:19:22,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:19:22,913 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1339828334, now seen corresponding path program 1 times [2021-08-13 06:19:22,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:22,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304701176] [2021-08-13 06:19:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:23,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:23,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:23,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:23,053 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:19:23,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:19:23,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:19:23,086 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:19:23,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:23,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:23,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:23,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304701176] [2021-08-13 06:19:23,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304701176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:23,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:23,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:19:23,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716942100] [2021-08-13 06:19:23,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:19:23,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:19:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:19:23,104 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 06:19:23,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 199 transitions, 953 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 06:19:23,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:23,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 06:19:23,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:23,430 INFO L129 PetriNetUnfolder]: 378/1032 cut-off events. [2021-08-13 06:19:23,431 INFO L130 PetriNetUnfolder]: For 101/601 co-relation queries the response was YES. [2021-08-13 06:19:23,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 1032 events. 378/1032 cut-off events. For 101/601 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7960 event pairs, 5 based on Foata normal form. 98/1051 useless extension candidates. Maximal degree in co-relation 2683. Up to 288 conditions per place. [2021-08-13 06:19:23,438 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 22 selfloop transitions, 44 changer transitions 57/193 dead transitions. [2021-08-13 06:19:23,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 193 transitions, 999 flow [2021-08-13 06:19:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:19:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:19:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-08-13 06:19:23,442 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-08-13 06:19:23,442 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-08-13 06:19:23,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-08-13 06:19:23,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:23,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-08-13 06:19:23,445 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 06:19:23,447 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 06:19:23,448 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 06:19:23,448 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 42 predicate places. [2021-08-13 06:19:23,451 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 193 transitions, 999 flow [2021-08-13 06:19:23,451 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 06:19:23,451 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:23,451 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 06:19:23,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:19:23,452 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash -722901777, now seen corresponding path program 1 times [2021-08-13 06:19:23,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:23,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524916045] [2021-08-13 06:19:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:23,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:23,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:23,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:23,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:23,570 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:19:23,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:19:23,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:19:23,600 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:19:23,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:23,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:23,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:23,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:23,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524916045] [2021-08-13 06:19:23,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524916045] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:23,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:23,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:19:23,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508687764] [2021-08-13 06:19:23,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:19:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:19:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:19:23,619 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 06:19:23,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 193 transitions, 999 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 06:19:23,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:23,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 06:19:23,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:23,953 INFO L129 PetriNetUnfolder]: 335/899 cut-off events. [2021-08-13 06:19:23,953 INFO L130 PetriNetUnfolder]: For 230/1035 co-relation queries the response was YES. [2021-08-13 06:19:23,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 899 events. 335/899 cut-off events. For 230/1035 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 6983 event pairs, 0 based on Foata normal form. 137/968 useless extension candidates. Maximal degree in co-relation 2951. Up to 269 conditions per place. [2021-08-13 06:19:23,961 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 19 selfloop transitions, 48 changer transitions 47/180 dead transitions. [2021-08-13 06:19:23,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 180 transitions, 1141 flow [2021-08-13 06:19:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 06:19:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 06:19:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-08-13 06:19:23,965 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-08-13 06:19:23,965 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-08-13 06:19:23,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-08-13 06:19:23,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:23,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-08-13 06:19:23,971 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 06:19:23,975 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 06:19:23,977 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 06:19:23,977 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 48 predicate places. [2021-08-13 06:19:23,977 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 1141 flow [2021-08-13 06:19:23,977 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 06:19:23,977 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:23,978 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:19:23,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 06:19:24,005 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1602729931, now seen corresponding path program 1 times [2021-08-13 06:19:24,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:24,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724078511] [2021-08-13 06:19:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:24,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:24,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:24,086 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:19:24,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:19:24,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:24,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:24,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:24,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:24,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724078511] [2021-08-13 06:19:24,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724078511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:24,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:24,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:19:24,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254713797] [2021-08-13 06:19:24,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:19:24,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:24,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:19:24,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:19:24,130 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 06:19:24,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 1141 flow. Second operand has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:24,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 06:19:24,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:24,316 INFO L129 PetriNetUnfolder]: 558/1428 cut-off events. [2021-08-13 06:19:24,316 INFO L130 PetriNetUnfolder]: For 374/782 co-relation queries the response was YES. [2021-08-13 06:19:24,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 1428 events. 558/1428 cut-off events. For 374/782 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 12119 event pairs, 0 based on Foata normal form. 4/1326 useless extension candidates. Maximal degree in co-relation 4787. Up to 449 conditions per place. [2021-08-13 06:19:24,325 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 9 selfloop transitions, 1 changer transitions 119/190 dead transitions. [2021-08-13 06:19:24,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 190 transitions, 1253 flow [2021-08-13 06:19:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 06:19:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 06:19:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 492 transitions. [2021-08-13 06:19:24,327 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-08-13 06:19:24,327 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 492 transitions. [2021-08-13 06:19:24,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 492 transitions. [2021-08-13 06:19:24,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:24,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 492 transitions. [2021-08-13 06:19:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,330 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 06:19:24,330 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 06:19:24,331 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 54 predicate places. [2021-08-13 06:19:24,331 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 190 transitions, 1253 flow [2021-08-13 06:19:24,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,331 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:19:24,331 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:19:24,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 06:19:24,332 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:19:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:19:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1166189423, now seen corresponding path program 2 times [2021-08-13 06:19:24,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:19:24,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635954064] [2021-08-13 06:19:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:19:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:19:24,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:24,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:24,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:19:24,420 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:19:24,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:19:24,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:24,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:19:24,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:19:24,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:19:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:19:24,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:19:24,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635954064] [2021-08-13 06:19:24,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635954064] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:19:24,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:19:24,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:19:24,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438000362] [2021-08-13 06:19:24,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:19:24,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:19:24,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:19:24,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:19:24,465 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-08-13 06:19:24,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 190 transitions, 1253 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:19:24,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-08-13 06:19:24,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:19:24,775 INFO L129 PetriNetUnfolder]: 934/2330 cut-off events. [2021-08-13 06:19:24,775 INFO L130 PetriNetUnfolder]: For 612/1170 co-relation queries the response was YES. [2021-08-13 06:19:24,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8005 conditions, 2330 events. 934/2330 cut-off events. For 612/1170 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 21990 event pairs, 0 based on Foata normal form. 10/2170 useless extension candidates. Maximal degree in co-relation 7951. Up to 755 conditions per place. [2021-08-13 06:19:24,790 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 0 selfloop transitions, 0 changer transitions 202/202 dead transitions. [2021-08-13 06:19:24,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 202 transitions, 1441 flow [2021-08-13 06:19:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 06:19:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 06:19:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 489 transitions. [2021-08-13 06:19:24,793 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8519163763066202 [2021-08-13 06:19:24,793 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 489 transitions. [2021-08-13 06:19:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 489 transitions. [2021-08-13 06:19:24,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:19:24,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 489 transitions. [2021-08-13 06:19:24,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,796 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 06:19:24,796 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 06:19:24,796 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 58 predicate places. [2021-08-13 06:19:24,796 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 202 transitions, 1441 flow [2021-08-13 06:19:24,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:19:24,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown