/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.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 01:36:23,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 01:36:23,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 01:36:23,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 01:36:23,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 01:36:23,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 01:36:23,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 01:36:23,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 01:36:23,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 01:36:23,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 01:36:23,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 01:36:23,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 01:36:23,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 01:36:23,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 01:36:23,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 01:36:23,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 01:36:23,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 01:36:23,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 01:36:23,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 01:36:23,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 01:36:23,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 01:36:23,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 01:36:23,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 01:36:23,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 01:36:23,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 01:36:23,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 01:36:23,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 01:36:23,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 01:36:23,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 01:36:23,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 01:36:23,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 01:36:23,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 01:36:23,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 01:36:23,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 01:36:23,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 01:36:23,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 01:36:23,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 01:36:23,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 01:36:23,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 01:36:23,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 01:36:23,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 01:36:23,998 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.epf [2022-12-12 01:36:24,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 01:36:24,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 01:36:24,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 01:36:24,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 01:36:24,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 01:36:24,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 01:36:24,027 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 01:36:24,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 01:36:24,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 01:36:24,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 01:36:24,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 01:36:24,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:36:24,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 01:36:24,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 01:36:24,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 01:36:24,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 01:36:24,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 01:36:24,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 01:36:24,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 01:36:24,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 01:36:24,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 01:36:24,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 01:36:24,293 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 01:36:24,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-12-12 01:36:25,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 01:36:25,490 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 01:36:25,490 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-12-12 01:36:25,494 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3dd5db26/1a16fa83318f44fbabe6dc08c6b72f54/FLAG0d6b00c17 [2022-12-12 01:36:25,504 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3dd5db26/1a16fa83318f44fbabe6dc08c6b72f54 [2022-12-12 01:36:25,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 01:36:25,506 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 01:36:25,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 01:36:25,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 01:36:25,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 01:36:25,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d04d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25, skipping insertion in model container [2022-12-12 01:36:25,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 01:36:25,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 01:36:25,648 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-12-12 01:36:25,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:36:25,660 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 01:36:25,678 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-12-12 01:36:25,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:36:25,692 INFO L208 MainTranslator]: Completed translation [2022-12-12 01:36:25,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25 WrapperNode [2022-12-12 01:36:25,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 01:36:25,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 01:36:25,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 01:36:25,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 01:36:25,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,717 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-12 01:36:25,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 01:36:25,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 01:36:25,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 01:36:25,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 01:36:25,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 01:36:25,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 01:36:25,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 01:36:25,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 01:36:25,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (1/1) ... [2022-12-12 01:36:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:36:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:25,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 01:36:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 01:36:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 01:36:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 01:36:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 01:36:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 01:36:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 01:36:25,815 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 01:36:25,876 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 01:36:25,878 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 01:36:25,989 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 01:36:25,995 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 01:36:25,995 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 01:36:25,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:36:25 BoogieIcfgContainer [2022-12-12 01:36:25,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 01:36:25,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 01:36:25,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 01:36:26,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 01:36:26,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:36:25" (1/3) ... [2022-12-12 01:36:26,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2481566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:36:26, skipping insertion in model container [2022-12-12 01:36:26,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:25" (2/3) ... [2022-12-12 01:36:26,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2481566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:36:26, skipping insertion in model container [2022-12-12 01:36:26,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:36:25" (3/3) ... [2022-12-12 01:36:26,003 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-12-12 01:36:26,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 01:36:26,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 01:36:26,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 01:36:26,069 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 01:36:26,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 87 transitions, 190 flow [2022-12-12 01:36:26,156 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2022-12-12 01:36:26,156 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:36:26,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2022-12-12 01:36:26,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 87 transitions, 190 flow [2022-12-12 01:36:26,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 166 flow [2022-12-12 01:36:26,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 01:36:26,175 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6caf09b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 01:36:26,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 01:36:26,196 INFO L130 PetriNetUnfolder]: 2/76 cut-off events. [2022-12-12 01:36:26,197 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:36:26,197 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:26,198 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:26,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1682065027, now seen corresponding path program 1 times [2022-12-12 01:36:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023510942] [2022-12-12 01:36:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:26,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:27,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023510942] [2022-12-12 01:36:27,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023510942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:27,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:27,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659518490] [2022-12-12 01:36:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:27,660 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:27,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 166 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:27,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:27,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:28,670 INFO L130 PetriNetUnfolder]: 179/510 cut-off events. [2022-12-12 01:36:28,671 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-12-12 01:36:28,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 510 events. 179/510 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2124 event pairs, 133 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 826. Up to 332 conditions per place. [2022-12-12 01:36:28,678 INFO L137 encePairwiseOnDemand]: 53/87 looper letters, 47 selfloop transitions, 28 changer transitions 34/142 dead transitions. [2022-12-12 01:36:28,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 142 transitions, 523 flow [2022-12-12 01:36:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:36:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:36:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1373 transitions. [2022-12-12 01:36:28,696 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5260536398467432 [2022-12-12 01:36:28,701 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 29 predicate places. [2022-12-12 01:36:28,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 142 transitions, 523 flow [2022-12-12 01:36:28,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 108 transitions, 381 flow [2022-12-12 01:36:28,707 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 381 flow [2022-12-12 01:36:28,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:28,708 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:28,709 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:28,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 01:36:28,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1454931943, now seen corresponding path program 2 times [2022-12-12 01:36:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:28,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009739910] [2022-12-12 01:36:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:29,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:29,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009739910] [2022-12-12 01:36:29,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009739910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:29,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:29,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:36:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169824579] [2022-12-12 01:36:29,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:29,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:36:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:36:29,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:36:29,366 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:29,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 381 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:36:29,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:29,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:29,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:30,049 INFO L130 PetriNetUnfolder]: 202/552 cut-off events. [2022-12-12 01:36:30,050 INFO L131 PetriNetUnfolder]: For 145/183 co-relation queries the response was YES. [2022-12-12 01:36:30,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 552 events. 202/552 cut-off events. For 145/183 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2498 event pairs, 22 based on Foata normal form. 7/557 useless extension candidates. Maximal degree in co-relation 1277. Up to 423 conditions per place. [2022-12-12 01:36:30,053 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 90 selfloop transitions, 43 changer transitions 36/202 dead transitions. [2022-12-12 01:36:30,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 202 transitions, 1155 flow [2022-12-12 01:36:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 01:36:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 01:36:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1358 transitions. [2022-12-12 01:36:30,056 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.53824811732065 [2022-12-12 01:36:30,056 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 42 predicate places. [2022-12-12 01:36:30,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 202 transitions, 1155 flow [2022-12-12 01:36:30,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 166 transitions, 909 flow [2022-12-12 01:36:30,060 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 909 flow [2022-12-12 01:36:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:36:30,060 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:30,061 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:30,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 01:36:30,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash -666463981, now seen corresponding path program 3 times [2022-12-12 01:36:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:30,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629194490] [2022-12-12 01:36:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:30,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:30,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629194490] [2022-12-12 01:36:30,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629194490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:30,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:30,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:36:30,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8346033] [2022-12-12 01:36:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:30,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:36:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:36:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:36:30,588 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:30,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 909 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:30,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:30,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:30,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:31,780 INFO L130 PetriNetUnfolder]: 240/644 cut-off events. [2022-12-12 01:36:31,781 INFO L131 PetriNetUnfolder]: For 238/298 co-relation queries the response was YES. [2022-12-12 01:36:31,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 644 events. 240/644 cut-off events. For 238/298 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3091 event pairs, 26 based on Foata normal form. 25/667 useless extension candidates. Maximal degree in co-relation 1995. Up to 505 conditions per place. [2022-12-12 01:36:31,784 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 126 selfloop transitions, 58 changer transitions 43/260 dead transitions. [2022-12-12 01:36:31,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 260 transitions, 1966 flow [2022-12-12 01:36:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:36:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:36:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1789 transitions. [2022-12-12 01:36:31,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5272620100206307 [2022-12-12 01:36:31,789 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 71 predicate places. [2022-12-12 01:36:31,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 260 transitions, 1966 flow [2022-12-12 01:36:31,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 217 transitions, 1583 flow [2022-12-12 01:36:31,793 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 217 transitions, 1583 flow [2022-12-12 01:36:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:31,794 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:31,794 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:31,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 01:36:31,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash -660016343, now seen corresponding path program 4 times [2022-12-12 01:36:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70672179] [2022-12-12 01:36:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70672179] [2022-12-12 01:36:32,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70672179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:32,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:32,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:36:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366063963] [2022-12-12 01:36:32,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:32,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:36:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:36:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:36:32,279 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:32,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 217 transitions, 1583 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:32,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:32,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:32,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:33,363 INFO L130 PetriNetUnfolder]: 264/691 cut-off events. [2022-12-12 01:36:33,363 INFO L131 PetriNetUnfolder]: For 322/390 co-relation queries the response was YES. [2022-12-12 01:36:33,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 691 events. 264/691 cut-off events. For 322/390 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3356 event pairs, 30 based on Foata normal form. 31/721 useless extension candidates. Maximal degree in co-relation 2724. Up to 555 conditions per place. [2022-12-12 01:36:33,368 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 155 selfloop transitions, 63 changer transitions 43/294 dead transitions. [2022-12-12 01:36:33,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 294 transitions, 2760 flow [2022-12-12 01:36:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:36:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:36:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1616 transitions. [2022-12-12 01:36:33,372 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5307060755336618 [2022-12-12 01:36:33,372 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 92 predicate places. [2022-12-12 01:36:33,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 294 transitions, 2760 flow [2022-12-12 01:36:33,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 251 transitions, 2291 flow [2022-12-12 01:36:33,377 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 251 transitions, 2291 flow [2022-12-12 01:36:33,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:33,377 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:33,377 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:33,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 01:36:33,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1754996841, now seen corresponding path program 5 times [2022-12-12 01:36:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061668948] [2022-12-12 01:36:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:33,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:33,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061668948] [2022-12-12 01:36:33,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061668948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:33,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:33,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696999467] [2022-12-12 01:36:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:33,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:33,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:33,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:33,951 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:33,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 251 transitions, 2291 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:33,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:33,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:33,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:34,683 INFO L130 PetriNetUnfolder]: 262/681 cut-off events. [2022-12-12 01:36:34,684 INFO L131 PetriNetUnfolder]: For 421/499 co-relation queries the response was YES. [2022-12-12 01:36:34,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 681 events. 262/681 cut-off events. For 421/499 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3281 event pairs, 3 based on Foata normal form. 31/711 useless extension candidates. Maximal degree in co-relation 3236. Up to 553 conditions per place. [2022-12-12 01:36:34,688 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 155 selfloop transitions, 68 changer transitions 44/300 dead transitions. [2022-12-12 01:36:34,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 300 transitions, 3363 flow [2022-12-12 01:36:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 01:36:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 01:36:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1306 transitions. [2022-12-12 01:36:34,701 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5361247947454844 [2022-12-12 01:36:34,703 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 106 predicate places. [2022-12-12 01:36:34,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 300 transitions, 3363 flow [2022-12-12 01:36:34,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 256 transitions, 2790 flow [2022-12-12 01:36:34,709 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 256 transitions, 2790 flow [2022-12-12 01:36:34,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:34,712 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:34,712 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 01:36:34,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:34,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1553849633, now seen corresponding path program 6 times [2022-12-12 01:36:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:34,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256151106] [2022-12-12 01:36:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:35,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:35,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256151106] [2022-12-12 01:36:35,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256151106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:35,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:35,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:35,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200903945] [2022-12-12 01:36:35,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:35,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:35,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:35,173 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:35,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 256 transitions, 2790 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:35,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:35,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:35,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:36,038 INFO L130 PetriNetUnfolder]: 263/741 cut-off events. [2022-12-12 01:36:36,038 INFO L131 PetriNetUnfolder]: For 882/958 co-relation queries the response was YES. [2022-12-12 01:36:36,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 741 events. 263/741 cut-off events. For 882/958 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3709 event pairs, 22 based on Foata normal form. 31/771 useless extension candidates. Maximal degree in co-relation 3833. Up to 561 conditions per place. [2022-12-12 01:36:36,043 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 157 selfloop transitions, 76 changer transitions 42/308 dead transitions. [2022-12-12 01:36:36,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 308 transitions, 4006 flow [2022-12-12 01:36:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:36:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:36:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1438 transitions. [2022-12-12 01:36:36,046 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5331850203930293 [2022-12-12 01:36:36,046 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 125 predicate places. [2022-12-12 01:36:36,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 308 transitions, 4006 flow [2022-12-12 01:36:36,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 266 transitions, 3379 flow [2022-12-12 01:36:36,051 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 266 transitions, 3379 flow [2022-12-12 01:36:36,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:36,052 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:36,052 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:36,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 01:36:36,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:36,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash 861179275, now seen corresponding path program 7 times [2022-12-12 01:36:36,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:36,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108741588] [2022-12-12 01:36:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:36,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108741588] [2022-12-12 01:36:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108741588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:36,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:36,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521602326] [2022-12-12 01:36:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:36,483 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:36,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 266 transitions, 3379 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:36,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:36,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:36,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:37,361 INFO L130 PetriNetUnfolder]: 260/728 cut-off events. [2022-12-12 01:36:37,361 INFO L131 PetriNetUnfolder]: For 1143/1255 co-relation queries the response was YES. [2022-12-12 01:36:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 728 events. 260/728 cut-off events. For 1143/1255 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3648 event pairs, 22 based on Foata normal form. 31/757 useless extension candidates. Maximal degree in co-relation 4390. Up to 555 conditions per place. [2022-12-12 01:36:37,367 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 157 selfloop transitions, 75 changer transitions 38/303 dead transitions. [2022-12-12 01:36:37,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 303 transitions, 4470 flow [2022-12-12 01:36:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:36:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:36:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1391 transitions. [2022-12-12 01:36:37,369 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5329501915708812 [2022-12-12 01:36:37,370 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 143 predicate places. [2022-12-12 01:36:37,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 303 transitions, 4470 flow [2022-12-12 01:36:37,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 265 transitions, 3829 flow [2022-12-12 01:36:37,376 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 265 transitions, 3829 flow [2022-12-12 01:36:37,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:37,376 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:37,376 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:37,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 01:36:37,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1381450487, now seen corresponding path program 8 times [2022-12-12 01:36:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:37,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289611872] [2022-12-12 01:36:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:37,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:37,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289611872] [2022-12-12 01:36:37,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289611872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:37,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:37,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:36:37,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400960370] [2022-12-12 01:36:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:37,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:36:37,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:36:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:36:37,811 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:37,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 265 transitions, 3829 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:37,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:37,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:39,072 INFO L130 PetriNetUnfolder]: 261/725 cut-off events. [2022-12-12 01:36:39,072 INFO L131 PetriNetUnfolder]: For 1323/1435 co-relation queries the response was YES. [2022-12-12 01:36:39,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5604 conditions, 725 events. 261/725 cut-off events. For 1323/1435 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3565 event pairs, 14 based on Foata normal form. 23/747 useless extension candidates. Maximal degree in co-relation 4959. Up to 560 conditions per place. [2022-12-12 01:36:39,078 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 160 selfloop transitions, 96 changer transitions 27/316 dead transitions. [2022-12-12 01:36:39,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 316 transitions, 5232 flow [2022-12-12 01:36:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 01:36:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 01:36:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1909 transitions. [2022-12-12 01:36:39,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5224411603721949 [2022-12-12 01:36:39,081 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 172 predicate places. [2022-12-12 01:36:39,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 316 transitions, 5232 flow [2022-12-12 01:36:39,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 289 transitions, 4731 flow [2022-12-12 01:36:39,087 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 289 transitions, 4731 flow [2022-12-12 01:36:39,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:39,088 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:39,088 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:39,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 01:36:39,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1937125281, now seen corresponding path program 9 times [2022-12-12 01:36:39,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:39,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742534910] [2022-12-12 01:36:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742534910] [2022-12-12 01:36:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742534910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:39,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:39,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:36:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808403628] [2022-12-12 01:36:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:36:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:36:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:36:39,457 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:39,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 289 transitions, 4731 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:39,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:39,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:39,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:40,350 INFO L130 PetriNetUnfolder]: 261/730 cut-off events. [2022-12-12 01:36:40,350 INFO L131 PetriNetUnfolder]: For 1545/1671 co-relation queries the response was YES. [2022-12-12 01:36:40,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6280 conditions, 730 events. 261/730 cut-off events. For 1545/1671 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3707 event pairs, 7 based on Foata normal form. 23/752 useless extension candidates. Maximal degree in co-relation 5421. Up to 567 conditions per place. [2022-12-12 01:36:40,355 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 172 selfloop transitions, 80 changer transitions 35/320 dead transitions. [2022-12-12 01:36:40,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 320 transitions, 5902 flow [2022-12-12 01:36:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:36:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:36:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1512 transitions. [2022-12-12 01:36:40,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2022-12-12 01:36:40,358 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 195 predicate places. [2022-12-12 01:36:40,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 320 transitions, 5902 flow [2022-12-12 01:36:40,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 285 transitions, 5163 flow [2022-12-12 01:36:40,364 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 285 transitions, 5163 flow [2022-12-12 01:36:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:40,364 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:40,364 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:40,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 01:36:40,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1658399855, now seen corresponding path program 10 times [2022-12-12 01:36:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:40,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37567880] [2022-12-12 01:36:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:40,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:40,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:40,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37567880] [2022-12-12 01:36:40,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37567880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:40,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:40,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:36:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299881654] [2022-12-12 01:36:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:36:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:36:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:36:40,737 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:40,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 285 transitions, 5163 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:40,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:40,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:40,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:41,698 INFO L130 PetriNetUnfolder]: 250/669 cut-off events. [2022-12-12 01:36:41,698 INFO L131 PetriNetUnfolder]: For 1524/1666 co-relation queries the response was YES. [2022-12-12 01:36:41,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 669 events. 250/669 cut-off events. For 1524/1666 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3188 event pairs, 10 based on Foata normal form. 31/699 useless extension candidates. Maximal degree in co-relation 5771. Up to 538 conditions per place. [2022-12-12 01:36:41,703 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 162 selfloop transitions, 77 changer transitions 27/299 dead transitions. [2022-12-12 01:36:41,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 299 transitions, 5996 flow [2022-12-12 01:36:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:36:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:36:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1507 transitions. [2022-12-12 01:36:41,706 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.524904214559387 [2022-12-12 01:36:41,706 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 215 predicate places. [2022-12-12 01:36:41,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 299 transitions, 5996 flow [2022-12-12 01:36:41,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 272 transitions, 5375 flow [2022-12-12 01:36:41,711 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 272 transitions, 5375 flow [2022-12-12 01:36:41,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:41,712 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:41,712 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:41,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 01:36:41,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1085643641, now seen corresponding path program 11 times [2022-12-12 01:36:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:41,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761606293] [2022-12-12 01:36:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:41,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761606293] [2022-12-12 01:36:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761606293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:42,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:42,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:36:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099325955] [2022-12-12 01:36:42,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:36:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:36:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:36:42,153 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:42,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 272 transitions, 5375 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:42,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:42,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:42,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:43,074 INFO L130 PetriNetUnfolder]: 238/642 cut-off events. [2022-12-12 01:36:43,074 INFO L131 PetriNetUnfolder]: For 1584/1704 co-relation queries the response was YES. [2022-12-12 01:36:43,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6782 conditions, 642 events. 238/642 cut-off events. For 1584/1704 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2964 event pairs, 4 based on Foata normal form. 21/662 useless extension candidates. Maximal degree in co-relation 6137. Up to 511 conditions per place. [2022-12-12 01:36:43,079 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 154 selfloop transitions, 67 changer transitions 25/279 dead transitions. [2022-12-12 01:36:43,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 279 transitions, 6027 flow [2022-12-12 01:36:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:36:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:36:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1451 transitions. [2022-12-12 01:36:43,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5211925287356322 [2022-12-12 01:36:43,082 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 232 predicate places. [2022-12-12 01:36:43,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 279 transitions, 6027 flow [2022-12-12 01:36:43,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 254 transitions, 5415 flow [2022-12-12 01:36:43,087 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 254 transitions, 5415 flow [2022-12-12 01:36:43,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:43,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:43,088 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:43,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 01:36:43,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash 885998253, now seen corresponding path program 12 times [2022-12-12 01:36:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:43,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802198509] [2022-12-12 01:36:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:43,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802198509] [2022-12-12 01:36:43,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802198509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:43,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:43,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002680743] [2022-12-12 01:36:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:43,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:43,425 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:43,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 254 transitions, 5415 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:43,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:43,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:43,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:44,324 INFO L130 PetriNetUnfolder]: 255/708 cut-off events. [2022-12-12 01:36:44,324 INFO L131 PetriNetUnfolder]: For 2712/2832 co-relation queries the response was YES. [2022-12-12 01:36:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7830 conditions, 708 events. 255/708 cut-off events. For 2712/2832 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3474 event pairs, 23 based on Foata normal form. 23/730 useless extension candidates. Maximal degree in co-relation 7244. Up to 546 conditions per place. [2022-12-12 01:36:44,329 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 149 selfloop transitions, 71 changer transitions 43/296 dead transitions. [2022-12-12 01:36:44,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 296 transitions, 6988 flow [2022-12-12 01:36:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:36:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:36:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1439 transitions. [2022-12-12 01:36:44,332 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5335558027437894 [2022-12-12 01:36:44,332 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 215 predicate places. [2022-12-12 01:36:44,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 296 transitions, 6988 flow [2022-12-12 01:36:44,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 253 transitions, 5831 flow [2022-12-12 01:36:44,337 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 253 transitions, 5831 flow [2022-12-12 01:36:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:44,338 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:44,338 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:44,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 01:36:44,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1894146857, now seen corresponding path program 13 times [2022-12-12 01:36:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:44,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810006124] [2022-12-12 01:36:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:44,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:44,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810006124] [2022-12-12 01:36:44,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810006124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:44,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:44,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542043539] [2022-12-12 01:36:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:44,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:44,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:44,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:44,684 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:44,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 253 transitions, 5831 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:44,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:44,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:44,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:45,523 INFO L130 PetriNetUnfolder]: 251/708 cut-off events. [2022-12-12 01:36:45,523 INFO L131 PetriNetUnfolder]: For 3215/3423 co-relation queries the response was YES. [2022-12-12 01:36:45,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8327 conditions, 708 events. 251/708 cut-off events. For 3215/3423 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3477 event pairs, 32 based on Foata normal form. 31/737 useless extension candidates. Maximal degree in co-relation 7305. Up to 539 conditions per place. [2022-12-12 01:36:45,528 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 147 selfloop transitions, 79 changer transitions 33/292 dead transitions. [2022-12-12 01:36:45,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 292 transitions, 7396 flow [2022-12-12 01:36:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:36:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:36:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1393 transitions. [2022-12-12 01:36:45,541 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5337164750957855 [2022-12-12 01:36:45,541 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 232 predicate places. [2022-12-12 01:36:45,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 292 transitions, 7396 flow [2022-12-12 01:36:45,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 259 transitions, 6442 flow [2022-12-12 01:36:45,547 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 259 transitions, 6442 flow [2022-12-12 01:36:45,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:45,547 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:45,547 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 01:36:45,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1158700689, now seen corresponding path program 14 times [2022-12-12 01:36:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:45,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116731591] [2022-12-12 01:36:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116731591] [2022-12-12 01:36:45,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116731591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:45,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:45,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:45,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288254686] [2022-12-12 01:36:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:45,875 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:45,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 259 transitions, 6442 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:45,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:45,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:45,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:46,762 INFO L130 PetriNetUnfolder]: 267/746 cut-off events. [2022-12-12 01:36:46,763 INFO L131 PetriNetUnfolder]: For 4058/4266 co-relation queries the response was YES. [2022-12-12 01:36:46,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 746 events. 267/746 cut-off events. For 4058/4266 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3661 event pairs, 18 based on Foata normal form. 21/765 useless extension candidates. Maximal degree in co-relation 8739. Up to 572 conditions per place. [2022-12-12 01:36:46,769 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 166 selfloop transitions, 98 changer transitions 22/319 dead transitions. [2022-12-12 01:36:46,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 319 transitions, 8712 flow [2022-12-12 01:36:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:36:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:36:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1579 transitions. [2022-12-12 01:36:46,771 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5338066260987153 [2022-12-12 01:36:46,771 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 256 predicate places. [2022-12-12 01:36:46,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 319 transitions, 8712 flow [2022-12-12 01:36:46,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 297 transitions, 8040 flow [2022-12-12 01:36:46,776 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 297 transitions, 8040 flow [2022-12-12 01:36:46,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:46,777 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:46,777 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:46,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 01:36:46,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:46,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1723702949, now seen corresponding path program 15 times [2022-12-12 01:36:46,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:46,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384810925] [2022-12-12 01:36:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:46,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:47,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:47,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384810925] [2022-12-12 01:36:47,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384810925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:47,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:47,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:36:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532880081] [2022-12-12 01:36:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:47,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:36:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:36:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:36:47,078 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:47,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 297 transitions, 8040 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:36:47,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:47,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:47,876 INFO L130 PetriNetUnfolder]: 275/766 cut-off events. [2022-12-12 01:36:47,877 INFO L131 PetriNetUnfolder]: For 4755/4995 co-relation queries the response was YES. [2022-12-12 01:36:47,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 766 events. 275/766 cut-off events. For 4755/4995 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3828 event pairs, 20 based on Foata normal form. 31/795 useless extension candidates. Maximal degree in co-relation 9636. Up to 592 conditions per place. [2022-12-12 01:36:47,882 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 185 selfloop transitions, 87 changer transitions 28/333 dead transitions. [2022-12-12 01:36:47,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 333 transitions, 9744 flow [2022-12-12 01:36:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 01:36:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 01:36:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1356 transitions. [2022-12-12 01:36:47,889 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5374554102259215 [2022-12-12 01:36:47,889 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 278 predicate places. [2022-12-12 01:36:47,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 333 transitions, 9744 flow [2022-12-12 01:36:47,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 305 transitions, 8827 flow [2022-12-12 01:36:47,895 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 305 transitions, 8827 flow [2022-12-12 01:36:47,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:36:47,896 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:47,896 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:47,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 01:36:47,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1600861161, now seen corresponding path program 16 times [2022-12-12 01:36:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:47,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282370304] [2022-12-12 01:36:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:48,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282370304] [2022-12-12 01:36:48,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282370304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:48,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:48,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:36:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211539167] [2022-12-12 01:36:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:36:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:36:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:36:48,245 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:48,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 305 transitions, 8827 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:48,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:48,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:49,200 INFO L130 PetriNetUnfolder]: 280/783 cut-off events. [2022-12-12 01:36:49,201 INFO L131 PetriNetUnfolder]: For 5531/5787 co-relation queries the response was YES. [2022-12-12 01:36:49,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 783 events. 280/783 cut-off events. For 5531/5787 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3952 event pairs, 21 based on Foata normal form. 31/812 useless extension candidates. Maximal degree in co-relation 10456. Up to 605 conditions per place. [2022-12-12 01:36:49,220 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 192 selfloop transitions, 90 changer transitions 31/346 dead transitions. [2022-12-12 01:36:49,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 346 transitions, 10789 flow [2022-12-12 01:36:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:36:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:36:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1568 transitions. [2022-12-12 01:36:49,224 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5300878972278567 [2022-12-12 01:36:49,225 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 304 predicate places. [2022-12-12 01:36:49,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 346 transitions, 10789 flow [2022-12-12 01:36:49,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 315 transitions, 9714 flow [2022-12-12 01:36:49,233 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 315 transitions, 9714 flow [2022-12-12 01:36:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:49,233 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:49,233 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 01:36:49,234 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -232570851, now seen corresponding path program 17 times [2022-12-12 01:36:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:49,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885812067] [2022-12-12 01:36:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885812067] [2022-12-12 01:36:49,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885812067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:49,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:49,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:49,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260721206] [2022-12-12 01:36:49,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:49,553 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:49,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 315 transitions, 9714 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:49,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:49,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:49,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:50,498 INFO L130 PetriNetUnfolder]: 282/784 cut-off events. [2022-12-12 01:36:50,499 INFO L131 PetriNetUnfolder]: For 5545/5815 co-relation queries the response was YES. [2022-12-12 01:36:50,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12027 conditions, 784 events. 282/784 cut-off events. For 5545/5815 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4005 event pairs, 11 based on Foata normal form. 31/814 useless extension candidates. Maximal degree in co-relation 10585. Up to 615 conditions per place. [2022-12-12 01:36:50,505 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 191 selfloop transitions, 103 changer transitions 29/356 dead transitions. [2022-12-12 01:36:50,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 356 transitions, 11781 flow [2022-12-12 01:36:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:36:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:36:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1577 transitions. [2022-12-12 01:36:50,507 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.533130493576741 [2022-12-12 01:36:50,507 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 329 predicate places. [2022-12-12 01:36:50,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 356 transitions, 11781 flow [2022-12-12 01:36:50,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 327 transitions, 10716 flow [2022-12-12 01:36:50,514 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 327 transitions, 10716 flow [2022-12-12 01:36:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:50,515 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:50,515 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 01:36:50,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1463908645, now seen corresponding path program 18 times [2022-12-12 01:36:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:50,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291693061] [2022-12-12 01:36:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:50,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291693061] [2022-12-12 01:36:50,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291693061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:50,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:50,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:36:50,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683534334] [2022-12-12 01:36:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:50,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:36:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:50,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:36:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:36:50,890 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:50,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 327 transitions, 10716 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:50,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:50,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:50,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:51,822 INFO L130 PetriNetUnfolder]: 273/748 cut-off events. [2022-12-12 01:36:51,823 INFO L131 PetriNetUnfolder]: For 5753/6053 co-relation queries the response was YES. [2022-12-12 01:36:51,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12343 conditions, 748 events. 273/748 cut-off events. For 5753/6053 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3760 event pairs, 10 based on Foata normal form. 41/788 useless extension candidates. Maximal degree in co-relation 11511. Up to 598 conditions per place. [2022-12-12 01:36:51,828 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 204 selfloop transitions, 82 changer transitions 27/346 dead transitions. [2022-12-12 01:36:51,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 346 transitions, 12053 flow [2022-12-12 01:36:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:36:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:36:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1472 transitions. [2022-12-12 01:36:51,829 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 01:36:51,830 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 352 predicate places. [2022-12-12 01:36:51,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 346 transitions, 12053 flow [2022-12-12 01:36:51,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 319 transitions, 10994 flow [2022-12-12 01:36:51,836 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 319 transitions, 10994 flow [2022-12-12 01:36:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:36:51,837 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:51,837 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 01:36:51,837 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1475020157, now seen corresponding path program 19 times [2022-12-12 01:36:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098064379] [2022-12-12 01:36:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098064379] [2022-12-12 01:36:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098064379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:52,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667152127] [2022-12-12 01:36:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:52,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:52,161 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:52,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 319 transitions, 10994 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:52,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:52,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:52,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:52,922 INFO L130 PetriNetUnfolder]: 273/763 cut-off events. [2022-12-12 01:36:52,923 INFO L131 PetriNetUnfolder]: For 6656/6952 co-relation queries the response was YES. [2022-12-12 01:36:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12978 conditions, 763 events. 273/763 cut-off events. For 6656/6952 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3817 event pairs, 10 based on Foata normal form. 33/794 useless extension candidates. Maximal degree in co-relation 11472. Up to 597 conditions per place. [2022-12-12 01:36:52,928 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 191 selfloop transitions, 85 changer transitions 35/344 dead transitions. [2022-12-12 01:36:52,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 344 transitions, 12593 flow [2022-12-12 01:36:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:36:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:36:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1438 transitions. [2022-12-12 01:36:52,930 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5331850203930293 [2022-12-12 01:36:52,930 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 372 predicate places. [2022-12-12 01:36:52,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 344 transitions, 12593 flow [2022-12-12 01:36:52,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 309 transitions, 11163 flow [2022-12-12 01:36:52,937 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 309 transitions, 11163 flow [2022-12-12 01:36:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:52,937 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:52,937 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:52,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 01:36:52,938 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash -881564693, now seen corresponding path program 20 times [2022-12-12 01:36:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:52,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877194156] [2022-12-12 01:36:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877194156] [2022-12-12 01:36:53,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877194156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:53,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:53,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:36:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422915736] [2022-12-12 01:36:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:36:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:36:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:36:53,404 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:53,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 309 transitions, 11163 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:53,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:53,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:53,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:54,448 INFO L130 PetriNetUnfolder]: 269/753 cut-off events. [2022-12-12 01:36:54,449 INFO L131 PetriNetUnfolder]: For 7354/7680 co-relation queries the response was YES. [2022-12-12 01:36:54,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13405 conditions, 753 events. 269/753 cut-off events. For 7354/7680 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3684 event pairs, 6 based on Foata normal form. 33/785 useless extension candidates. Maximal degree in co-relation 11957. Up to 587 conditions per place. [2022-12-12 01:36:54,455 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 196 selfloop transitions, 87 changer transitions 20/336 dead transitions. [2022-12-12 01:36:54,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 336 transitions, 12864 flow [2022-12-12 01:36:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:36:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:36:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1559 transitions. [2022-12-12 01:36:54,457 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5270453008789723 [2022-12-12 01:36:54,458 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 388 predicate places. [2022-12-12 01:36:54,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 336 transitions, 12864 flow [2022-12-12 01:36:54,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 316 transitions, 12012 flow [2022-12-12 01:36:54,466 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 316 transitions, 12012 flow [2022-12-12 01:36:54,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:54,467 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:54,467 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:54,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-12 01:36:54,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -367734231, now seen corresponding path program 21 times [2022-12-12 01:36:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65937639] [2022-12-12 01:36:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65937639] [2022-12-12 01:36:54,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65937639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:54,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:54,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:36:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763703416] [2022-12-12 01:36:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:36:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:36:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:36:54,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:54,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 316 transitions, 12012 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:54,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:54,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:55,771 INFO L130 PetriNetUnfolder]: 262/741 cut-off events. [2022-12-12 01:36:55,772 INFO L131 PetriNetUnfolder]: For 8325/8659 co-relation queries the response was YES. [2022-12-12 01:36:55,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13835 conditions, 741 events. 262/741 cut-off events. For 8325/8659 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3690 event pairs, 11 based on Foata normal form. 33/772 useless extension candidates. Maximal degree in co-relation 12369. Up to 578 conditions per place. [2022-12-12 01:36:55,778 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 198 selfloop transitions, 81 changer transitions 17/329 dead transitions. [2022-12-12 01:36:55,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 329 transitions, 13168 flow [2022-12-12 01:36:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:36:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:36:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1464 transitions. [2022-12-12 01:36:55,779 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2022-12-12 01:36:55,781 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 413 predicate places. [2022-12-12 01:36:55,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 495 places, 329 transitions, 13168 flow [2022-12-12 01:36:55,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 486 places, 312 transitions, 12399 flow [2022-12-12 01:36:55,789 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 312 transitions, 12399 flow [2022-12-12 01:36:55,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:36:55,789 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:55,794 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-12 01:36:55,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:55,794 INFO L85 PathProgramCache]: Analyzing trace with hash -996018363, now seen corresponding path program 22 times [2022-12-12 01:36:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:55,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263751242] [2022-12-12 01:36:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263751242] [2022-12-12 01:36:56,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263751242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:56,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:56,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:36:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529606172] [2022-12-12 01:36:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:36:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:36:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:36:56,176 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:56,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 312 transitions, 12399 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:56,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:56,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:56,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:57,177 INFO L130 PetriNetUnfolder]: 259/737 cut-off events. [2022-12-12 01:36:57,177 INFO L131 PetriNetUnfolder]: For 9101/9453 co-relation queries the response was YES. [2022-12-12 01:36:57,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 737 events. 259/737 cut-off events. For 9101/9453 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3622 event pairs, 16 based on Foata normal form. 31/765 useless extension candidates. Maximal degree in co-relation 12858. Up to 570 conditions per place. [2022-12-12 01:36:57,183 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 194 selfloop transitions, 83 changer transitions 16/326 dead transitions. [2022-12-12 01:36:57,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 326 transitions, 13607 flow [2022-12-12 01:36:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:36:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:36:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1591 transitions. [2022-12-12 01:36:57,185 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5224958949096881 [2022-12-12 01:36:57,185 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 438 predicate places. [2022-12-12 01:36:57,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 520 places, 326 transitions, 13607 flow [2022-12-12 01:36:57,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 513 places, 310 transitions, 12865 flow [2022-12-12 01:36:57,193 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 310 transitions, 12865 flow [2022-12-12 01:36:57,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:36:57,193 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:57,193 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:57,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-12 01:36:57,195 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:57,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:57,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1160067217, now seen corresponding path program 23 times [2022-12-12 01:36:57,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:57,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574240980] [2022-12-12 01:36:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:57,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:57,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574240980] [2022-12-12 01:36:57,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574240980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:57,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:57,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:57,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591895702] [2022-12-12 01:36:57,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:57,543 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:57,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 310 transitions, 12865 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:57,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:57,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:57,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:58,433 INFO L130 PetriNetUnfolder]: 273/782 cut-off events. [2022-12-12 01:36:58,433 INFO L131 PetriNetUnfolder]: For 10850/11202 co-relation queries the response was YES. [2022-12-12 01:36:58,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15647 conditions, 782 events. 273/782 cut-off events. For 10850/11202 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3948 event pairs, 13 based on Foata normal form. 21/801 useless extension candidates. Maximal degree in co-relation 13947. Up to 601 conditions per place. [2022-12-12 01:36:58,440 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 179 selfloop transitions, 117 changer transitions 19/348 dead transitions. [2022-12-12 01:36:58,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 348 transitions, 15261 flow [2022-12-12 01:36:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:36:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:36:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1578 transitions. [2022-12-12 01:36:58,443 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5334685598377282 [2022-12-12 01:36:58,444 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 464 predicate places. [2022-12-12 01:36:58,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 348 transitions, 15261 flow [2022-12-12 01:36:58,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 540 places, 329 transitions, 14337 flow [2022-12-12 01:36:58,454 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 329 transitions, 14337 flow [2022-12-12 01:36:58,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:58,454 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:58,454 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:58,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-12 01:36:58,454 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:58,455 INFO L85 PathProgramCache]: Analyzing trace with hash 622734585, now seen corresponding path program 24 times [2022-12-12 01:36:58,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:58,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984029503] [2022-12-12 01:36:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:58,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984029503] [2022-12-12 01:36:58,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984029503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:58,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:58,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:36:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890998770] [2022-12-12 01:36:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:58,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:36:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:36:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:36:58,791 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:36:58,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 329 transitions, 14337 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:58,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:58,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:36:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:59,713 INFO L130 PetriNetUnfolder]: 276/787 cut-off events. [2022-12-12 01:36:59,713 INFO L131 PetriNetUnfolder]: For 10803/11187 co-relation queries the response was YES. [2022-12-12 01:36:59,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16586 conditions, 787 events. 276/787 cut-off events. For 10803/11187 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4032 event pairs, 8 based on Foata normal form. 31/815 useless extension candidates. Maximal degree in co-relation 14750. Up to 613 conditions per place. [2022-12-12 01:36:59,721 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 204 selfloop transitions, 99 changer transitions 20/356 dead transitions. [2022-12-12 01:36:59,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 356 transitions, 16294 flow [2022-12-12 01:36:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:36:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:36:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1526 transitions. [2022-12-12 01:36:59,722 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5315221177290143 [2022-12-12 01:36:59,722 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 490 predicate places. [2022-12-12 01:36:59,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 572 places, 356 transitions, 16294 flow [2022-12-12 01:36:59,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 566 places, 336 transitions, 15282 flow [2022-12-12 01:36:59,732 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 336 transitions, 15282 flow [2022-12-12 01:36:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:36:59,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:59,733 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:59,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-12 01:36:59,733 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash -868005543, now seen corresponding path program 25 times [2022-12-12 01:36:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:59,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959038695] [2022-12-12 01:36:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:00,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959038695] [2022-12-12 01:37:00,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959038695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:00,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:00,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014597400] [2022-12-12 01:37:00,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:00,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:00,025 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:00,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 336 transitions, 15282 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:00,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:00,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:00,826 INFO L130 PetriNetUnfolder]: 270/772 cut-off events. [2022-12-12 01:37:00,826 INFO L131 PetriNetUnfolder]: For 11087/11478 co-relation queries the response was YES. [2022-12-12 01:37:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17078 conditions, 772 events. 270/772 cut-off events. For 11087/11478 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3924 event pairs, 7 based on Foata normal form. 28/799 useless extension candidates. Maximal degree in co-relation 15356. Up to 607 conditions per place. [2022-12-12 01:37:00,833 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 188 selfloop transitions, 105 changer transitions 26/352 dead transitions. [2022-12-12 01:37:00,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 352 transitions, 16738 flow [2022-12-12 01:37:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:37:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:37:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1440 transitions. [2022-12-12 01:37:00,835 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5339265850945495 [2022-12-12 01:37:00,835 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 514 predicate places. [2022-12-12 01:37:00,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 596 places, 352 transitions, 16738 flow [2022-12-12 01:37:00,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 326 transitions, 15365 flow [2022-12-12 01:37:00,845 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 326 transitions, 15365 flow [2022-12-12 01:37:00,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:00,846 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:00,846 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:00,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-12 01:37:00,846 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:00,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1090953919, now seen corresponding path program 26 times [2022-12-12 01:37:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:00,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415658102] [2022-12-12 01:37:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415658102] [2022-12-12 01:37:01,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415658102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:01,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:01,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073275048] [2022-12-12 01:37:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:01,181 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:01,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 326 transitions, 15365 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:01,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:01,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:01,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:02,087 INFO L130 PetriNetUnfolder]: 263/766 cut-off events. [2022-12-12 01:37:02,088 INFO L131 PetriNetUnfolder]: For 13420/13844 co-relation queries the response was YES. [2022-12-12 01:37:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17331 conditions, 766 events. 263/766 cut-off events. For 13420/13844 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3915 event pairs, 14 based on Foata normal form. 35/799 useless extension candidates. Maximal degree in co-relation 15378. Up to 592 conditions per place. [2022-12-12 01:37:02,095 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 200 selfloop transitions, 89 changer transitions 17/339 dead transitions. [2022-12-12 01:37:02,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 339 transitions, 16671 flow [2022-12-12 01:37:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:37:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:37:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1386 transitions. [2022-12-12 01:37:02,097 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-12-12 01:37:02,097 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 531 predicate places. [2022-12-12 01:37:02,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 613 places, 339 transitions, 16671 flow [2022-12-12 01:37:02,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 604 places, 322 transitions, 15732 flow [2022-12-12 01:37:02,107 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 322 transitions, 15732 flow [2022-12-12 01:37:02,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:02,107 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:02,108 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-12 01:37:02,108 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 557939719, now seen corresponding path program 27 times [2022-12-12 01:37:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:02,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705600194] [2022-12-12 01:37:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:02,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705600194] [2022-12-12 01:37:02,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705600194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:02,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:02,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506366461] [2022-12-12 01:37:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:02,427 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:02,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 322 transitions, 15732 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:02,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:02,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:03,401 INFO L130 PetriNetUnfolder]: 267/770 cut-off events. [2022-12-12 01:37:03,401 INFO L131 PetriNetUnfolder]: For 14092/14542 co-relation queries the response was YES. [2022-12-12 01:37:03,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18213 conditions, 770 events. 267/770 cut-off events. For 14092/14542 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3918 event pairs, 11 based on Foata normal form. 33/801 useless extension candidates. Maximal degree in co-relation 16363. Up to 601 conditions per place. [2022-12-12 01:37:03,408 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 194 selfloop transitions, 97 changer transitions 24/348 dead transitions. [2022-12-12 01:37:03,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 348 transitions, 17787 flow [2022-12-12 01:37:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1566 transitions. [2022-12-12 01:37:03,410 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2022-12-12 01:37:03,410 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 555 predicate places. [2022-12-12 01:37:03,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 637 places, 348 transitions, 17787 flow [2022-12-12 01:37:03,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 628 places, 324 transitions, 16422 flow [2022-12-12 01:37:03,419 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 324 transitions, 16422 flow [2022-12-12 01:37:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:03,420 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:03,420 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-12 01:37:03,420 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash 322252369, now seen corresponding path program 28 times [2022-12-12 01:37:03,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:03,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039989118] [2022-12-12 01:37:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:03,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039989118] [2022-12-12 01:37:03,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039989118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:03,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:03,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500474569] [2022-12-12 01:37:03,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:03,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:03,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:03,724 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:03,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 324 transitions, 16422 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:03,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:03,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:03,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:04,563 INFO L130 PetriNetUnfolder]: 262/765 cut-off events. [2022-12-12 01:37:04,563 INFO L131 PetriNetUnfolder]: For 15023/15417 co-relation queries the response was YES. [2022-12-12 01:37:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18596 conditions, 765 events. 262/765 cut-off events. For 15023/15417 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3866 event pairs, 11 based on Foata normal form. 31/794 useless extension candidates. Maximal degree in co-relation 16743. Up to 592 conditions per place. [2022-12-12 01:37:04,571 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 182 selfloop transitions, 114 changer transitions 19/348 dead transitions. [2022-12-12 01:37:04,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 348 transitions, 18402 flow [2022-12-12 01:37:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 01:37:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 01:37:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1350 transitions. [2022-12-12 01:37:04,572 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.535077288941736 [2022-12-12 01:37:04,572 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 574 predicate places. [2022-12-12 01:37:04,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 348 transitions, 18402 flow [2022-12-12 01:37:04,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 651 places, 329 transitions, 17294 flow [2022-12-12 01:37:04,582 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 329 transitions, 17294 flow [2022-12-12 01:37:04,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:04,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:04,583 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-12 01:37:04,583 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash 992847167, now seen corresponding path program 29 times [2022-12-12 01:37:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:04,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470050363] [2022-12-12 01:37:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:04,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:04,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470050363] [2022-12-12 01:37:04,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470050363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:04,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:04,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852664312] [2022-12-12 01:37:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:04,900 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:04,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 329 transitions, 17294 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:04,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:04,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:04,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:05,919 INFO L130 PetriNetUnfolder]: 263/742 cut-off events. [2022-12-12 01:37:05,920 INFO L131 PetriNetUnfolder]: For 13825/14299 co-relation queries the response was YES. [2022-12-12 01:37:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19063 conditions, 742 events. 263/742 cut-off events. For 13825/14299 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3645 event pairs, 5 based on Foata normal form. 31/772 useless extension candidates. Maximal degree in co-relation 17085. Up to 587 conditions per place. [2022-12-12 01:37:05,927 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 195 selfloop transitions, 99 changer transitions 21/348 dead transitions. [2022-12-12 01:37:05,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 348 transitions, 19041 flow [2022-12-12 01:37:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:37:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:37:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1476 transitions. [2022-12-12 01:37:05,929 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5301724137931034 [2022-12-12 01:37:05,931 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 600 predicate places. [2022-12-12 01:37:05,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 682 places, 348 transitions, 19041 flow [2022-12-12 01:37:05,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 674 places, 327 transitions, 17766 flow [2022-12-12 01:37:05,942 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 327 transitions, 17766 flow [2022-12-12 01:37:05,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:05,942 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:05,942 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-12 01:37:05,942 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 958569191, now seen corresponding path program 30 times [2022-12-12 01:37:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:05,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117788996] [2022-12-12 01:37:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:06,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117788996] [2022-12-12 01:37:06,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117788996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:06,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:06,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:37:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978601885] [2022-12-12 01:37:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:37:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:37:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:37:06,265 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:06,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 327 transitions, 17766 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:37:06,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:06,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:06,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:07,195 INFO L130 PetriNetUnfolder]: 254/714 cut-off events. [2022-12-12 01:37:07,195 INFO L131 PetriNetUnfolder]: For 14289/14781 co-relation queries the response was YES. [2022-12-12 01:37:07,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19062 conditions, 714 events. 254/714 cut-off events. For 14289/14781 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3454 event pairs, 2 based on Foata normal form. 33/745 useless extension candidates. Maximal degree in co-relation 17193. Up to 567 conditions per place. [2022-12-12 01:37:07,203 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 210 selfloop transitions, 65 changer transitions 26/334 dead transitions. [2022-12-12 01:37:07,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 334 transitions, 18797 flow [2022-12-12 01:37:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:37:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:37:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1456 transitions. [2022-12-12 01:37:07,207 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2022-12-12 01:37:07,208 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 623 predicate places. [2022-12-12 01:37:07,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 705 places, 334 transitions, 18797 flow [2022-12-12 01:37:07,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 651 places, 308 transitions, 17173 flow [2022-12-12 01:37:07,219 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 308 transitions, 17173 flow [2022-12-12 01:37:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:37:07,220 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:07,220 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-12 01:37:07,221 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2013267753, now seen corresponding path program 31 times [2022-12-12 01:37:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:07,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172273791] [2022-12-12 01:37:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:07,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172273791] [2022-12-12 01:37:07,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172273791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:07,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:07,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063468472] [2022-12-12 01:37:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:07,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:07,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:07,555 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:07,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 308 transitions, 17173 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:07,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:07,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:07,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:08,389 INFO L130 PetriNetUnfolder]: 254/706 cut-off events. [2022-12-12 01:37:08,389 INFO L131 PetriNetUnfolder]: For 15405/15937 co-relation queries the response was YES. [2022-12-12 01:37:08,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19354 conditions, 706 events. 254/706 cut-off events. For 15405/15937 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3384 event pairs, 2 based on Foata normal form. 35/739 useless extension candidates. Maximal degree in co-relation 17427. Up to 557 conditions per place. [2022-12-12 01:37:08,397 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 173 selfloop transitions, 103 changer transitions 15/324 dead transitions. [2022-12-12 01:37:08,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 324 transitions, 18759 flow [2022-12-12 01:37:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:37:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:37:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1519 transitions. [2022-12-12 01:37:08,399 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290839428770463 [2022-12-12 01:37:08,399 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 601 predicate places. [2022-12-12 01:37:08,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 683 places, 324 transitions, 18759 flow [2022-12-12 01:37:08,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 309 transitions, 17787 flow [2022-12-12 01:37:08,410 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 309 transitions, 17787 flow [2022-12-12 01:37:08,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:08,410 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:08,410 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-12 01:37:08,410 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 5544209, now seen corresponding path program 32 times [2022-12-12 01:37:08,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:08,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154521529] [2022-12-12 01:37:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:08,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:08,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154521529] [2022-12-12 01:37:08,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154521529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:08,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:08,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:08,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748057323] [2022-12-12 01:37:08,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:08,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:08,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:08,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:08,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:08,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 309 transitions, 17787 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:08,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:08,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:08,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:09,631 INFO L130 PetriNetUnfolder]: 254/709 cut-off events. [2022-12-12 01:37:09,631 INFO L131 PetriNetUnfolder]: For 16199/16695 co-relation queries the response was YES. [2022-12-12 01:37:09,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19989 conditions, 709 events. 254/709 cut-off events. For 16199/16695 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3385 event pairs, 5 based on Foata normal form. 21/728 useless extension candidates. Maximal degree in co-relation 18004. Up to 558 conditions per place. [2022-12-12 01:37:09,640 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 174 selfloop transitions, 103 changer transitions 15/325 dead transitions. [2022-12-12 01:37:09,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 325 transitions, 19407 flow [2022-12-12 01:37:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1561 transitions. [2022-12-12 01:37:09,642 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5277214334009466 [2022-12-12 01:37:09,643 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 627 predicate places. [2022-12-12 01:37:09,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 709 places, 325 transitions, 19407 flow [2022-12-12 01:37:09,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 310 transitions, 18405 flow [2022-12-12 01:37:09,656 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 310 transitions, 18405 flow [2022-12-12 01:37:09,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:09,656 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:09,656 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-12 01:37:09,656 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1029465873, now seen corresponding path program 33 times [2022-12-12 01:37:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481043273] [2022-12-12 01:37:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481043273] [2022-12-12 01:37:09,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481043273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:09,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:09,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550314738] [2022-12-12 01:37:09,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:09,999 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:09,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 310 transitions, 18405 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:09,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:09,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:09,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:10,779 INFO L130 PetriNetUnfolder]: 254/713 cut-off events. [2022-12-12 01:37:10,779 INFO L131 PetriNetUnfolder]: For 17774/18238 co-relation queries the response was YES. [2022-12-12 01:37:10,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20627 conditions, 713 events. 254/713 cut-off events. For 17774/18238 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3423 event pairs, 3 based on Foata normal form. 31/743 useless extension candidates. Maximal degree in co-relation 18584. Up to 559 conditions per place. [2022-12-12 01:37:10,789 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 194 selfloop transitions, 84 changer transitions 15/326 dead transitions. [2022-12-12 01:37:10,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 326 transitions, 20059 flow [2022-12-12 01:37:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1553 transitions. [2022-12-12 01:37:10,799 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5250169033130494 [2022-12-12 01:37:10,799 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 653 predicate places. [2022-12-12 01:37:10,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 735 places, 326 transitions, 20059 flow [2022-12-12 01:37:10,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 728 places, 311 transitions, 19027 flow [2022-12-12 01:37:10,813 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 311 transitions, 19027 flow [2022-12-12 01:37:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:10,813 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:10,814 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:10,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-12 01:37:10,814 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash -488361873, now seen corresponding path program 34 times [2022-12-12 01:37:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:10,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681854992] [2022-12-12 01:37:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:11,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681854992] [2022-12-12 01:37:11,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681854992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:11,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:11,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660141613] [2022-12-12 01:37:11,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:11,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:11,120 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:11,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 311 transitions, 19027 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:11,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:11,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:11,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:11,861 INFO L130 PetriNetUnfolder]: 249/698 cut-off events. [2022-12-12 01:37:11,861 INFO L131 PetriNetUnfolder]: For 17594/18006 co-relation queries the response was YES. [2022-12-12 01:37:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20872 conditions, 698 events. 249/698 cut-off events. For 17594/18006 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3333 event pairs, 3 based on Foata normal form. 31/728 useless extension candidates. Maximal degree in co-relation 18917. Up to 549 conditions per place. [2022-12-12 01:37:11,869 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 171 selfloop transitions, 97 changer transitions 17/318 dead transitions. [2022-12-12 01:37:11,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 318 transitions, 20079 flow [2022-12-12 01:37:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:37:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:37:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1384 transitions. [2022-12-12 01:37:11,871 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5302681992337165 [2022-12-12 01:37:11,871 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 675 predicate places. [2022-12-12 01:37:11,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 757 places, 318 transitions, 20079 flow [2022-12-12 01:37:11,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 746 places, 301 transitions, 18880 flow [2022-12-12 01:37:11,935 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 301 transitions, 18880 flow [2022-12-12 01:37:11,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:11,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:11,936 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:11,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-12 01:37:11,936 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1644835563, now seen corresponding path program 35 times [2022-12-12 01:37:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943148069] [2022-12-12 01:37:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:11,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943148069] [2022-12-12 01:37:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943148069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:12,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:12,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117216693] [2022-12-12 01:37:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:12,201 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:12,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 301 transitions, 18880 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:12,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:12,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:12,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:12,912 INFO L130 PetriNetUnfolder]: 244/674 cut-off events. [2022-12-12 01:37:12,912 INFO L131 PetriNetUnfolder]: For 17968/18392 co-relation queries the response was YES. [2022-12-12 01:37:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21019 conditions, 674 events. 244/674 cut-off events. For 17968/18392 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3120 event pairs, 4 based on Foata normal form. 31/704 useless extension candidates. Maximal degree in co-relation 19085. Up to 537 conditions per place. [2022-12-12 01:37:12,920 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 172 selfloop transitions, 81 changer transitions 22/308 dead transitions. [2022-12-12 01:37:12,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 775 places, 308 transitions, 19926 flow [2022-12-12 01:37:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:37:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:37:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1382 transitions. [2022-12-12 01:37:12,921 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5295019157088122 [2022-12-12 01:37:12,921 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 693 predicate places. [2022-12-12 01:37:12,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 775 places, 308 transitions, 19926 flow [2022-12-12 01:37:12,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 760 places, 286 transitions, 18333 flow [2022-12-12 01:37:12,932 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 286 transitions, 18333 flow [2022-12-12 01:37:12,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:12,933 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:12,933 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:12,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-12 01:37:12,933 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:12,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -963822991, now seen corresponding path program 36 times [2022-12-12 01:37:12,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:12,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817411489] [2022-12-12 01:37:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:13,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817411489] [2022-12-12 01:37:13,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817411489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:13,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:13,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332763326] [2022-12-12 01:37:13,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:13,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:13,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:13,256 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:13,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 286 transitions, 18333 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:13,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:13,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:13,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:14,071 INFO L130 PetriNetUnfolder]: 237/655 cut-off events. [2022-12-12 01:37:14,072 INFO L131 PetriNetUnfolder]: For 17633/18053 co-relation queries the response was YES. [2022-12-12 01:37:14,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20931 conditions, 655 events. 237/655 cut-off events. For 17633/18053 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3002 event pairs, 3 based on Foata normal form. 21/675 useless extension candidates. Maximal degree in co-relation 19022. Up to 519 conditions per place. [2022-12-12 01:37:14,079 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 163 selfloop transitions, 77 changer transitions 20/293 dead transitions. [2022-12-12 01:37:14,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 293 transitions, 19363 flow [2022-12-12 01:37:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:37:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:37:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1421 transitions. [2022-12-12 01:37:14,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2022-12-12 01:37:14,081 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 708 predicate places. [2022-12-12 01:37:14,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 790 places, 293 transitions, 19363 flow [2022-12-12 01:37:14,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 768 places, 273 transitions, 17874 flow [2022-12-12 01:37:14,091 INFO L495 AbstractCegarLoop]: Abstraction has has 768 places, 273 transitions, 17874 flow [2022-12-12 01:37:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:14,092 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:14,092 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:14,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-12 01:37:14,092 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 617333523, now seen corresponding path program 37 times [2022-12-12 01:37:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:14,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109786452] [2022-12-12 01:37:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:14,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109786452] [2022-12-12 01:37:14,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109786452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:14,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:14,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154405254] [2022-12-12 01:37:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:14,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:14,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:14,412 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:14,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 273 transitions, 17874 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:14,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:14,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:14,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:15,189 INFO L130 PetriNetUnfolder]: 232/640 cut-off events. [2022-12-12 01:37:15,189 INFO L131 PetriNetUnfolder]: For 17891/18473 co-relation queries the response was YES. [2022-12-12 01:37:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20922 conditions, 640 events. 232/640 cut-off events. For 17891/18473 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2921 event pairs, 5 based on Foata normal form. 21/659 useless extension candidates. Maximal degree in co-relation 19042. Up to 504 conditions per place. [2022-12-12 01:37:15,196 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 156 selfloop transitions, 66 changer transitions 25/280 dead transitions. [2022-12-12 01:37:15,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 280 transitions, 18892 flow [2022-12-12 01:37:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:37:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:37:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1417 transitions. [2022-12-12 01:37:15,198 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5253985910270671 [2022-12-12 01:37:15,198 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 716 predicate places. [2022-12-12 01:37:15,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 798 places, 280 transitions, 18892 flow [2022-12-12 01:37:15,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 762 places, 255 transitions, 16983 flow [2022-12-12 01:37:15,207 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 255 transitions, 16983 flow [2022-12-12 01:37:15,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:15,208 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:15,208 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-12 01:37:15,208 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:15,208 INFO L85 PathProgramCache]: Analyzing trace with hash 168460851, now seen corresponding path program 38 times [2022-12-12 01:37:15,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:15,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19024420] [2022-12-12 01:37:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:15,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:15,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19024420] [2022-12-12 01:37:15,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19024420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:15,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:15,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:37:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617527406] [2022-12-12 01:37:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:15,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:37:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:37:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:37:15,529 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:15,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 255 transitions, 16983 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:15,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:15,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:16,278 INFO L130 PetriNetUnfolder]: 229/618 cut-off events. [2022-12-12 01:37:16,279 INFO L131 PetriNetUnfolder]: For 19597/20131 co-relation queries the response was YES. [2022-12-12 01:37:16,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20992 conditions, 618 events. 229/618 cut-off events. For 19597/20131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2738 event pairs, 3 based on Foata normal form. 31/648 useless extension candidates. Maximal degree in co-relation 19340. Up to 492 conditions per place. [2022-12-12 01:37:16,287 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 145 selfloop transitions, 76 changer transitions 15/269 dead transitions. [2022-12-12 01:37:16,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 269 transitions, 18531 flow [2022-12-12 01:37:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1545 transitions. [2022-12-12 01:37:16,288 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5223123732251521 [2022-12-12 01:37:16,288 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 713 predicate places. [2022-12-12 01:37:16,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 795 places, 269 transitions, 18531 flow [2022-12-12 01:37:16,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 788 places, 254 transitions, 17349 flow [2022-12-12 01:37:16,299 INFO L495 AbstractCegarLoop]: Abstraction has has 788 places, 254 transitions, 17349 flow [2022-12-12 01:37:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:16,299 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:16,299 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:16,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-12 01:37:16,300 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -941283427, now seen corresponding path program 39 times [2022-12-12 01:37:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:16,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514690237] [2022-12-12 01:37:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:16,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514690237] [2022-12-12 01:37:16,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514690237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:16,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:16,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:37:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694415784] [2022-12-12 01:37:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:37:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:37:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:37:16,667 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:16,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 254 transitions, 17349 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:16,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:16,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:16,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:17,556 INFO L130 PetriNetUnfolder]: 224/599 cut-off events. [2022-12-12 01:37:17,556 INFO L131 PetriNetUnfolder]: For 18180/18652 co-relation queries the response was YES. [2022-12-12 01:37:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 599 events. 224/599 cut-off events. For 18180/18652 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2629 event pairs, 5 based on Foata normal form. 31/629 useless extension candidates. Maximal degree in co-relation 19384. Up to 481 conditions per place. [2022-12-12 01:37:17,596 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 138 selfloop transitions, 56 changer transitions 33/260 dead transitions. [2022-12-12 01:37:17,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 260 transitions, 18277 flow [2022-12-12 01:37:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:37:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:37:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1410 transitions. [2022-12-12 01:37:17,612 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5228031145717463 [2022-12-12 01:37:17,612 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 736 predicate places. [2022-12-12 01:37:17,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 818 places, 260 transitions, 18277 flow [2022-12-12 01:37:17,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 625 places, 227 transitions, 15622 flow [2022-12-12 01:37:17,623 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 227 transitions, 15622 flow [2022-12-12 01:37:17,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:17,623 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:17,623 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-12 01:37:17,623 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1808759345, now seen corresponding path program 40 times [2022-12-12 01:37:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:17,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158359991] [2022-12-12 01:37:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158359991] [2022-12-12 01:37:17,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158359991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:17,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656518922] [2022-12-12 01:37:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:17,938 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:17,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 227 transitions, 15622 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:17,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:17,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:18,941 INFO L130 PetriNetUnfolder]: 255/672 cut-off events. [2022-12-12 01:37:18,941 INFO L131 PetriNetUnfolder]: For 20647/21203 co-relation queries the response was YES. [2022-12-12 01:37:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24241 conditions, 672 events. 255/672 cut-off events. For 20647/21203 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3227 event pairs, 14 based on Foata normal form. 23/694 useless extension candidates. Maximal degree in co-relation 21387. Up to 545 conditions per place. [2022-12-12 01:37:18,950 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 141 selfloop transitions, 82 changer transitions 43/299 dead transitions. [2022-12-12 01:37:18,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 299 transitions, 21956 flow [2022-12-12 01:37:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:37:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:37:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1703 transitions. [2022-12-12 01:37:18,954 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290462876669774 [2022-12-12 01:37:18,954 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 579 predicate places. [2022-12-12 01:37:18,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 661 places, 299 transitions, 21956 flow [2022-12-12 01:37:18,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 651 places, 256 transitions, 18391 flow [2022-12-12 01:37:18,966 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 256 transitions, 18391 flow [2022-12-12 01:37:18,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:18,967 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:18,967 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-12 01:37:18,967 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash 978469669, now seen corresponding path program 41 times [2022-12-12 01:37:18,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:18,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844727536] [2022-12-12 01:37:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844727536] [2022-12-12 01:37:19,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844727536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:19,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:19,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305368137] [2022-12-12 01:37:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:19,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:19,294 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:19,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 256 transitions, 18391 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:19,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:19,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:20,206 INFO L130 PetriNetUnfolder]: 262/729 cut-off events. [2022-12-12 01:37:20,206 INFO L131 PetriNetUnfolder]: For 28530/28870 co-relation queries the response was YES. [2022-12-12 01:37:20,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25541 conditions, 729 events. 262/729 cut-off events. For 28530/28870 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3587 event pairs, 39 based on Foata normal form. 21/749 useless extension candidates. Maximal degree in co-relation 22686. Up to 561 conditions per place. [2022-12-12 01:37:20,215 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 156 selfloop transitions, 86 changer transitions 38/313 dead transitions. [2022-12-12 01:37:20,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 313 transitions, 23658 flow [2022-12-12 01:37:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:37:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:37:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1439 transitions. [2022-12-12 01:37:20,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5335558027437894 [2022-12-12 01:37:20,217 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 599 predicate places. [2022-12-12 01:37:20,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 681 places, 313 transitions, 23658 flow [2022-12-12 01:37:20,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 670 places, 275 transitions, 20433 flow [2022-12-12 01:37:20,229 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 275 transitions, 20433 flow [2022-12-12 01:37:20,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:20,229 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:20,229 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:20,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-12 01:37:20,229 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 886148561, now seen corresponding path program 42 times [2022-12-12 01:37:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:20,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699008370] [2022-12-12 01:37:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:20,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699008370] [2022-12-12 01:37:20,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699008370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:20,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:20,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135949751] [2022-12-12 01:37:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:20,505 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:20,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 275 transitions, 20433 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:20,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:20,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:21,336 INFO L130 PetriNetUnfolder]: 261/755 cut-off events. [2022-12-12 01:37:21,336 INFO L131 PetriNetUnfolder]: For 34600/34964 co-relation queries the response was YES. [2022-12-12 01:37:21,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26510 conditions, 755 events. 261/755 cut-off events. For 34600/34964 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3851 event pairs, 35 based on Foata normal form. 31/785 useless extension candidates. Maximal degree in co-relation 23404. Up to 569 conditions per place. [2022-12-12 01:37:21,344 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 158 selfloop transitions, 94 changer transitions 33/318 dead transitions. [2022-12-12 01:37:21,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 318 transitions, 24651 flow [2022-12-12 01:37:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:37:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:37:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1654 transitions. [2022-12-12 01:37:21,346 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5280970625798213 [2022-12-12 01:37:21,346 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 623 predicate places. [2022-12-12 01:37:21,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 705 places, 318 transitions, 24651 flow [2022-12-12 01:37:21,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 696 places, 285 transitions, 21783 flow [2022-12-12 01:37:21,358 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 285 transitions, 21783 flow [2022-12-12 01:37:21,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:21,358 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:21,358 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:21,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-12 01:37:21,359 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -268996699, now seen corresponding path program 43 times [2022-12-12 01:37:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:21,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426291900] [2022-12-12 01:37:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:21,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426291900] [2022-12-12 01:37:21,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426291900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:21,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:21,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676759032] [2022-12-12 01:37:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:21,657 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:21,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 285 transitions, 21783 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:21,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:21,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:21,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:22,649 INFO L130 PetriNetUnfolder]: 277/795 cut-off events. [2022-12-12 01:37:22,649 INFO L131 PetriNetUnfolder]: For 38249/38605 co-relation queries the response was YES. [2022-12-12 01:37:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28579 conditions, 795 events. 277/795 cut-off events. For 38249/38605 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4053 event pairs, 36 based on Foata normal form. 21/815 useless extension candidates. Maximal degree in co-relation 25621. Up to 602 conditions per place. [2022-12-12 01:37:22,659 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 186 selfloop transitions, 105 changer transitions 22/346 dead transitions. [2022-12-12 01:37:22,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 346 transitions, 27673 flow [2022-12-12 01:37:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:37:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:37:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1709 transitions. [2022-12-12 01:37:22,661 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5309102205653929 [2022-12-12 01:37:22,662 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 650 predicate places. [2022-12-12 01:37:22,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 732 places, 346 transitions, 27673 flow [2022-12-12 01:37:22,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 726 places, 324 transitions, 25725 flow [2022-12-12 01:37:22,677 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 324 transitions, 25725 flow [2022-12-12 01:37:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:22,677 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:22,677 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:22,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-12 01:37:22,677 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:22,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash -5154823, now seen corresponding path program 44 times [2022-12-12 01:37:22,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:22,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171867058] [2022-12-12 01:37:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:22,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171867058] [2022-12-12 01:37:22,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171867058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:22,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:22,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007754078] [2022-12-12 01:37:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:22,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:22,962 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:22,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 324 transitions, 25725 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:22,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:22,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:22,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:23,862 INFO L130 PetriNetUnfolder]: 294/831 cut-off events. [2022-12-12 01:37:23,862 INFO L131 PetriNetUnfolder]: For 39983/40363 co-relation queries the response was YES. [2022-12-12 01:37:23,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31023 conditions, 831 events. 294/831 cut-off events. For 39983/40363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4330 event pairs, 31 based on Foata normal form. 31/860 useless extension candidates. Maximal degree in co-relation 28179. Up to 642 conditions per place. [2022-12-12 01:37:23,873 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 210 selfloop transitions, 108 changer transitions 29/380 dead transitions. [2022-12-12 01:37:23,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 380 transitions, 31371 flow [2022-12-12 01:37:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:37:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:37:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1743 transitions. [2022-12-12 01:37:23,888 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5272232304900182 [2022-12-12 01:37:23,888 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 681 predicate places. [2022-12-12 01:37:23,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 763 places, 380 transitions, 31371 flow [2022-12-12 01:37:23,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 755 places, 351 transitions, 28740 flow [2022-12-12 01:37:23,904 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 351 transitions, 28740 flow [2022-12-12 01:37:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:23,905 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:23,905 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-12 01:37:23,905 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash 519026005, now seen corresponding path program 45 times [2022-12-12 01:37:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:23,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862862862] [2022-12-12 01:37:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:24,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:24,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862862862] [2022-12-12 01:37:24,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862862862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:24,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:24,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:37:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542510530] [2022-12-12 01:37:24,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:24,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:37:24,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:37:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:37:24,210 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:24,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 351 transitions, 28740 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:24,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:24,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:24,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:25,565 INFO L130 PetriNetUnfolder]: 310/890 cut-off events. [2022-12-12 01:37:25,565 INFO L131 PetriNetUnfolder]: For 48261/48649 co-relation queries the response was YES. [2022-12-12 01:37:25,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33343 conditions, 890 events. 310/890 cut-off events. For 48261/48649 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4727 event pairs, 41 based on Foata normal form. 31/920 useless extension candidates. Maximal degree in co-relation 30437. Up to 677 conditions per place. [2022-12-12 01:37:25,577 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 249 selfloop transitions, 110 changer transitions 25/417 dead transitions. [2022-12-12 01:37:25,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 805 places, 417 transitions, 35469 flow [2022-12-12 01:37:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 01:37:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 01:37:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2310 transitions. [2022-12-12 01:37:25,579 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5206220419202163 [2022-12-12 01:37:25,579 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 723 predicate places. [2022-12-12 01:37:25,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 805 places, 417 transitions, 35469 flow [2022-12-12 01:37:25,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 797 places, 392 transitions, 33154 flow [2022-12-12 01:37:25,596 INFO L495 AbstractCegarLoop]: Abstraction has has 797 places, 392 transitions, 33154 flow [2022-12-12 01:37:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:25,597 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:25,597 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-12 01:37:25,597 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash 467983217, now seen corresponding path program 46 times [2022-12-12 01:37:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:25,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709490597] [2022-12-12 01:37:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:25,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709490597] [2022-12-12 01:37:25,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709490597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:25,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:25,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:25,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036030260] [2022-12-12 01:37:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:25,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:25,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:25,897 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:25,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 797 places, 392 transitions, 33154 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:25,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:25,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:25,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:27,076 INFO L130 PetriNetUnfolder]: 336/933 cut-off events. [2022-12-12 01:37:27,076 INFO L131 PetriNetUnfolder]: For 45941/46321 co-relation queries the response was YES. [2022-12-12 01:37:27,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36776 conditions, 933 events. 336/933 cut-off events. For 45941/46321 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5005 event pairs, 35 based on Foata normal form. 21/953 useless extension candidates. Maximal degree in co-relation 34894. Up to 735 conditions per place. [2022-12-12 01:37:27,090 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 290 selfloop transitions, 111 changer transitions 20/454 dead transitions. [2022-12-12 01:37:27,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 454 transitions, 39718 flow [2022-12-12 01:37:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:37:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:37:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1796 transitions. [2022-12-12 01:37:27,091 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5293250810492189 [2022-12-12 01:37:27,092 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 753 predicate places. [2022-12-12 01:37:27,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 835 places, 454 transitions, 39718 flow [2022-12-12 01:37:27,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 829 places, 434 transitions, 37826 flow [2022-12-12 01:37:27,111 INFO L495 AbstractCegarLoop]: Abstraction has has 829 places, 434 transitions, 37826 flow [2022-12-12 01:37:27,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:27,111 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:27,111 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:27,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-12 01:37:27,111 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1719730229, now seen corresponding path program 47 times [2022-12-12 01:37:27,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:27,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781596515] [2022-12-12 01:37:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:27,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781596515] [2022-12-12 01:37:27,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781596515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:27,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:27,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:27,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553834052] [2022-12-12 01:37:27,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:27,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:27,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:27,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:27,386 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:27,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 434 transitions, 37826 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:27,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:27,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:27,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:28,401 INFO L130 PetriNetUnfolder]: 333/964 cut-off events. [2022-12-12 01:37:28,401 INFO L131 PetriNetUnfolder]: For 57278/57774 co-relation queries the response was YES. [2022-12-12 01:37:28,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37778 conditions, 964 events. 333/964 cut-off events. For 57278/57774 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5356 event pairs, 46 based on Foata normal form. 31/993 useless extension candidates. Maximal degree in co-relation 34748. Up to 739 conditions per place. [2022-12-12 01:37:28,415 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 298 selfloop transitions, 88 changer transitions 39/458 dead transitions. [2022-12-12 01:37:28,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 458 transitions, 40965 flow [2022-12-12 01:37:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:37:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:37:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1656 transitions. [2022-12-12 01:37:28,417 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 01:37:28,417 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 782 predicate places. [2022-12-12 01:37:28,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 864 places, 458 transitions, 40965 flow [2022-12-12 01:37:28,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 848 places, 419 transitions, 37191 flow [2022-12-12 01:37:28,439 INFO L495 AbstractCegarLoop]: Abstraction has has 848 places, 419 transitions, 37191 flow [2022-12-12 01:37:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:28,439 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:28,439 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-12 01:37:28,439 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1904091225, now seen corresponding path program 48 times [2022-12-12 01:37:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:28,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150224621] [2022-12-12 01:37:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:28,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:28,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150224621] [2022-12-12 01:37:28,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150224621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:28,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:28,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:37:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407044778] [2022-12-12 01:37:28,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:37:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:37:28,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:37:28,786 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:28,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 419 transitions, 37191 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:37:28,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:28,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:28,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:29,822 INFO L130 PetriNetUnfolder]: 335/969 cut-off events. [2022-12-12 01:37:29,823 INFO L131 PetriNetUnfolder]: For 57298/57694 co-relation queries the response was YES. [2022-12-12 01:37:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38805 conditions, 969 events. 335/969 cut-off events. For 57298/57694 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5395 event pairs, 44 based on Foata normal form. 21/989 useless extension candidates. Maximal degree in co-relation 34417. Up to 744 conditions per place. [2022-12-12 01:37:29,837 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 298 selfloop transitions, 96 changer transitions 28/455 dead transitions. [2022-12-12 01:37:29,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 455 transitions, 41515 flow [2022-12-12 01:37:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1574 transitions. [2022-12-12 01:37:29,840 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5321162947937795 [2022-12-12 01:37:29,841 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 799 predicate places. [2022-12-12 01:37:29,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 881 places, 455 transitions, 41515 flow [2022-12-12 01:37:29,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 874 places, 427 transitions, 38750 flow [2022-12-12 01:37:29,861 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 427 transitions, 38750 flow [2022-12-12 01:37:29,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:37:29,861 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:29,861 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:29,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-12 01:37:29,861 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2156069, now seen corresponding path program 49 times [2022-12-12 01:37:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:29,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916372118] [2022-12-12 01:37:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:30,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916372118] [2022-12-12 01:37:30,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916372118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:30,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:30,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:37:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123664352] [2022-12-12 01:37:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:37:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:37:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:37:30,153 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:30,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 427 transitions, 38750 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:37:30,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:30,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:31,218 INFO L130 PetriNetUnfolder]: 338/985 cut-off events. [2022-12-12 01:37:31,218 INFO L131 PetriNetUnfolder]: For 62165/62585 co-relation queries the response was YES. [2022-12-12 01:37:31,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40050 conditions, 985 events. 338/985 cut-off events. For 62165/62585 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5545 event pairs, 45 based on Foata normal form. 31/1015 useless extension candidates. Maximal degree in co-relation 35472. Up to 753 conditions per place. [2022-12-12 01:37:31,233 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 297 selfloop transitions, 105 changer transitions 28/463 dead transitions. [2022-12-12 01:37:31,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 463 transitions, 43162 flow [2022-12-12 01:37:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:37:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:37:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1486 transitions. [2022-12-12 01:37:31,235 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5337643678160919 [2022-12-12 01:37:31,235 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 823 predicate places. [2022-12-12 01:37:31,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 905 places, 463 transitions, 43162 flow [2022-12-12 01:37:31,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 898 places, 435 transitions, 40341 flow [2022-12-12 01:37:31,256 INFO L495 AbstractCegarLoop]: Abstraction has has 898 places, 435 transitions, 40341 flow [2022-12-12 01:37:31,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:37:31,257 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:31,257 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-12 01:37:31,257 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1234513169, now seen corresponding path program 50 times [2022-12-12 01:37:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:31,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801931270] [2022-12-12 01:37:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:31,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:31,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801931270] [2022-12-12 01:37:31,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801931270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:31,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:31,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:31,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21780478] [2022-12-12 01:37:31,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:31,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:31,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:31,571 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:31,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 435 transitions, 40341 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:31,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:31,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:31,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:32,689 INFO L130 PetriNetUnfolder]: 344/991 cut-off events. [2022-12-12 01:37:32,689 INFO L131 PetriNetUnfolder]: For 60716/61144 co-relation queries the response was YES. [2022-12-12 01:37:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41603 conditions, 991 events. 344/991 cut-off events. For 60716/61144 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5637 event pairs, 34 based on Foata normal form. 31/1021 useless extension candidates. Maximal degree in co-relation 36839. Up to 768 conditions per place. [2022-12-12 01:37:32,704 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 294 selfloop transitions, 121 changer transitions 29/477 dead transitions. [2022-12-12 01:37:32,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 477 transitions, 45453 flow [2022-12-12 01:37:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:37:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:37:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1706 transitions. [2022-12-12 01:37:32,705 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5299782541161852 [2022-12-12 01:37:32,706 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 852 predicate places. [2022-12-12 01:37:32,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 934 places, 477 transitions, 45453 flow [2022-12-12 01:37:32,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 926 places, 448 transitions, 42474 flow [2022-12-12 01:37:32,727 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 448 transitions, 42474 flow [2022-12-12 01:37:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:32,727 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:32,727 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-12 01:37:32,728 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 195632641, now seen corresponding path program 51 times [2022-12-12 01:37:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:32,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700350322] [2022-12-12 01:37:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:33,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:33,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700350322] [2022-12-12 01:37:33,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700350322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:33,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:33,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:33,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437407296] [2022-12-12 01:37:33,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:33,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:33,020 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:33,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 448 transitions, 42474 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:33,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:33,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:33,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:34,169 INFO L130 PetriNetUnfolder]: 341/1002 cut-off events. [2022-12-12 01:37:34,169 INFO L131 PetriNetUnfolder]: For 68705/69157 co-relation queries the response was YES. [2022-12-12 01:37:34,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42325 conditions, 1002 events. 341/1002 cut-off events. For 68705/69157 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5758 event pairs, 45 based on Foata normal form. 33/1034 useless extension candidates. Maximal degree in co-relation 37252. Up to 766 conditions per place. [2022-12-12 01:37:34,185 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 309 selfloop transitions, 95 changer transitions 40/477 dead transitions. [2022-12-12 01:37:34,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 477 transitions, 46353 flow [2022-12-12 01:37:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:37:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:37:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1610 transitions. [2022-12-12 01:37:34,186 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 01:37:34,187 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 878 predicate places. [2022-12-12 01:37:34,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 960 places, 477 transitions, 46353 flow [2022-12-12 01:37:34,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 947 places, 437 transitions, 42160 flow [2022-12-12 01:37:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 947 places, 437 transitions, 42160 flow [2022-12-12 01:37:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:34,209 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:34,210 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-12 01:37:34,210 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1930172227, now seen corresponding path program 52 times [2022-12-12 01:37:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:34,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819256421] [2022-12-12 01:37:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:34,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819256421] [2022-12-12 01:37:34,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819256421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:34,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:34,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11302709] [2022-12-12 01:37:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:34,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:34,562 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:34,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 947 places, 437 transitions, 42160 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:34,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:34,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:35,717 INFO L130 PetriNetUnfolder]: 341/976 cut-off events. [2022-12-12 01:37:35,717 INFO L131 PetriNetUnfolder]: For 62783/63313 co-relation queries the response was YES. [2022-12-12 01:37:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43159 conditions, 976 events. 341/976 cut-off events. For 62783/63313 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5538 event pairs, 46 based on Foata normal form. 21/995 useless extension candidates. Maximal degree in co-relation 39819. Up to 767 conditions per place. [2022-12-12 01:37:35,732 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 310 selfloop transitions, 106 changer transitions 29/478 dead transitions. [2022-12-12 01:37:35,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 478 transitions, 47338 flow [2022-12-12 01:37:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:37:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:37:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1793 transitions. [2022-12-12 01:37:35,734 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5284409077512526 [2022-12-12 01:37:35,734 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 903 predicate places. [2022-12-12 01:37:35,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 985 places, 478 transitions, 47338 flow [2022-12-12 01:37:35,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 977 places, 449 transitions, 44243 flow [2022-12-12 01:37:35,759 INFO L495 AbstractCegarLoop]: Abstraction has has 977 places, 449 transitions, 44243 flow [2022-12-12 01:37:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:35,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:35,760 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:35,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-12 01:37:35,760 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1394022355, now seen corresponding path program 53 times [2022-12-12 01:37:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:35,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511730305] [2022-12-12 01:37:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:36,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511730305] [2022-12-12 01:37:36,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511730305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:36,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:36,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025149159] [2022-12-12 01:37:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:36,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:36,057 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:36,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 449 transitions, 44243 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:36,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:36,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:36,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:37,220 INFO L130 PetriNetUnfolder]: 337/1003 cut-off events. [2022-12-12 01:37:37,221 INFO L131 PetriNetUnfolder]: For 76988/77440 co-relation queries the response was YES. [2022-12-12 01:37:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43732 conditions, 1003 events. 337/1003 cut-off events. For 76988/77440 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5808 event pairs, 48 based on Foata normal form. 31/1033 useless extension candidates. Maximal degree in co-relation 38465. Up to 762 conditions per place. [2022-12-12 01:37:37,236 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 317 selfloop transitions, 91 changer transitions 35/476 dead transitions. [2022-12-12 01:37:37,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1012 places, 476 transitions, 48021 flow [2022-12-12 01:37:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:37:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:37:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1657 transitions. [2022-12-12 01:37:37,237 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290549169859514 [2022-12-12 01:37:37,238 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 930 predicate places. [2022-12-12 01:37:37,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 1012 places, 476 transitions, 48021 flow [2022-12-12 01:37:37,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 999 places, 441 transitions, 44211 flow [2022-12-12 01:37:37,260 INFO L495 AbstractCegarLoop]: Abstraction has has 999 places, 441 transitions, 44211 flow [2022-12-12 01:37:37,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:37,261 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:37,261 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:37,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-12 01:37:37,261 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2016073999, now seen corresponding path program 54 times [2022-12-12 01:37:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:37,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351460022] [2022-12-12 01:37:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:37,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351460022] [2022-12-12 01:37:37,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351460022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:37,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:37,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:37:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315402827] [2022-12-12 01:37:37,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:37,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:37:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:37:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:37:37,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:37,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 999 places, 441 transitions, 44211 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:37,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:37,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:37,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:39,210 INFO L130 PetriNetUnfolder]: 378/1112 cut-off events. [2022-12-12 01:37:39,210 INFO L131 PetriNetUnfolder]: For 87558/88124 co-relation queries the response was YES. [2022-12-12 01:37:39,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49561 conditions, 1112 events. 378/1112 cut-off events. For 87558/88124 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6600 event pairs, 37 based on Foata normal form. 31/1141 useless extension candidates. Maximal degree in co-relation 46097. Up to 853 conditions per place. [2022-12-12 01:37:39,228 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 340 selfloop transitions, 161 changer transitions 20/554 dead transitions. [2022-12-12 01:37:39,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1050 places, 554 transitions, 57481 flow [2022-12-12 01:37:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-12 01:37:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-12 01:37:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2362 transitions. [2022-12-12 01:37:39,230 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.52210433244916 [2022-12-12 01:37:39,230 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 968 predicate places. [2022-12-12 01:37:39,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 1050 places, 554 transitions, 57481 flow [2022-12-12 01:37:39,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1044 places, 534 transitions, 55269 flow [2022-12-12 01:37:39,258 INFO L495 AbstractCegarLoop]: Abstraction has has 1044 places, 534 transitions, 55269 flow [2022-12-12 01:37:39,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:39,258 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:39,258 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:39,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-12 01:37:39,259 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash 862453289, now seen corresponding path program 55 times [2022-12-12 01:37:39,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:39,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964426811] [2022-12-12 01:37:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:39,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964426811] [2022-12-12 01:37:39,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964426811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:39,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:39,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:39,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63027826] [2022-12-12 01:37:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:39,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:39,655 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:39,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1044 places, 534 transitions, 55269 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:39,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:39,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:39,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:41,240 INFO L130 PetriNetUnfolder]: 420/1239 cut-off events. [2022-12-12 01:37:41,240 INFO L131 PetriNetUnfolder]: For 100349/100925 co-relation queries the response was YES. [2022-12-12 01:37:41,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56090 conditions, 1239 events. 420/1239 cut-off events. For 100349/100925 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7662 event pairs, 38 based on Foata normal form. 31/1268 useless extension candidates. Maximal degree in co-relation 49988. Up to 953 conditions per place. [2022-12-12 01:37:41,261 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 360 selfloop transitions, 215 changer transitions 21/629 dead transitions. [2022-12-12 01:37:41,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1089 places, 629 transitions, 66935 flow [2022-12-12 01:37:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 01:37:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 01:37:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2103 transitions. [2022-12-12 01:37:41,263 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.525487256371814 [2022-12-12 01:37:41,263 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1007 predicate places. [2022-12-12 01:37:41,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 1089 places, 629 transitions, 66935 flow [2022-12-12 01:37:41,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1083 places, 608 transitions, 64571 flow [2022-12-12 01:37:41,296 INFO L495 AbstractCegarLoop]: Abstraction has has 1083 places, 608 transitions, 64571 flow [2022-12-12 01:37:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:41,296 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:41,297 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-12 01:37:41,297 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 471820285, now seen corresponding path program 56 times [2022-12-12 01:37:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853590117] [2022-12-12 01:37:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853590117] [2022-12-12 01:37:41,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853590117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:41,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:41,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:41,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94917783] [2022-12-12 01:37:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:41,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:41,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:41,597 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:41,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 608 transitions, 64571 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:41,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:41,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:41,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:43,205 INFO L130 PetriNetUnfolder]: 427/1264 cut-off events. [2022-12-12 01:37:43,205 INFO L131 PetriNetUnfolder]: For 104051/104653 co-relation queries the response was YES. [2022-12-12 01:37:43,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58348 conditions, 1264 events. 427/1264 cut-off events. For 104051/104653 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7943 event pairs, 38 based on Foata normal form. 31/1294 useless extension candidates. Maximal degree in co-relation 51565. Up to 975 conditions per place. [2022-12-12 01:37:43,226 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 458 selfloop transitions, 127 changer transitions 30/648 dead transitions. [2022-12-12 01:37:43,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1121 places, 648 transitions, 70308 flow [2022-12-12 01:37:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:37:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:37:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1791 transitions. [2022-12-12 01:37:43,228 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5278514588859416 [2022-12-12 01:37:43,228 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1039 predicate places. [2022-12-12 01:37:43,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 1121 places, 648 transitions, 70308 flow [2022-12-12 01:37:43,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1114 places, 618 transitions, 66867 flow [2022-12-12 01:37:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 1114 places, 618 transitions, 66867 flow [2022-12-12 01:37:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:43,265 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:43,265 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-12 01:37:43,265 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -647699921, now seen corresponding path program 57 times [2022-12-12 01:37:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:43,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535187866] [2022-12-12 01:37:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:43,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:43,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535187866] [2022-12-12 01:37:43,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535187866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:43,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:43,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426939810] [2022-12-12 01:37:43,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:43,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:43,695 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:43,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1114 places, 618 transitions, 66867 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:43,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:43,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:43,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:45,421 INFO L130 PetriNetUnfolder]: 430/1261 cut-off events. [2022-12-12 01:37:45,421 INFO L131 PetriNetUnfolder]: For 99390/99886 co-relation queries the response was YES. [2022-12-12 01:37:45,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60049 conditions, 1261 events. 430/1261 cut-off events. For 99390/99886 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7955 event pairs, 28 based on Foata normal form. 21/1282 useless extension candidates. Maximal degree in co-relation 52922. Up to 987 conditions per place. [2022-12-12 01:37:45,442 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 438 selfloop transitions, 161 changer transitions 29/661 dead transitions. [2022-12-12 01:37:45,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1160 places, 661 transitions, 73052 flow [2022-12-12 01:37:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 01:37:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 01:37:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2141 transitions. [2022-12-12 01:37:45,444 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5235999021765713 [2022-12-12 01:37:45,444 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1078 predicate places. [2022-12-12 01:37:45,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 1160 places, 661 transitions, 73052 flow [2022-12-12 01:37:45,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1152 places, 632 transitions, 69667 flow [2022-12-12 01:37:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 1152 places, 632 transitions, 69667 flow [2022-12-12 01:37:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:45,479 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:45,479 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-12 01:37:45,479 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1259955011, now seen corresponding path program 58 times [2022-12-12 01:37:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:45,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249581870] [2022-12-12 01:37:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:45,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249581870] [2022-12-12 01:37:45,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249581870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:45,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:45,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:37:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879068579] [2022-12-12 01:37:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:45,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:37:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:37:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:37:45,845 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:45,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1152 places, 632 transitions, 69667 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:45,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:45,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:47,238 INFO L130 PetriNetUnfolder]: 426/1254 cut-off events. [2022-12-12 01:37:47,238 INFO L131 PetriNetUnfolder]: For 107876/108482 co-relation queries the response was YES. [2022-12-12 01:37:47,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60783 conditions, 1254 events. 426/1254 cut-off events. For 107876/108482 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7947 event pairs, 33 based on Foata normal form. 31/1283 useless extension candidates. Maximal degree in co-relation 58433. Up to 982 conditions per place. [2022-12-12 01:37:47,258 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 482 selfloop transitions, 104 changer transitions 40/659 dead transitions. [2022-12-12 01:37:47,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1185 places, 659 transitions, 74081 flow [2022-12-12 01:37:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:37:47,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:37:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1570 transitions. [2022-12-12 01:37:47,259 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.530764029749831 [2022-12-12 01:37:47,260 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1103 predicate places. [2022-12-12 01:37:47,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 1185 places, 659 transitions, 74081 flow [2022-12-12 01:37:47,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1170 places, 619 transitions, 69328 flow [2022-12-12 01:37:47,292 INFO L495 AbstractCegarLoop]: Abstraction has has 1170 places, 619 transitions, 69328 flow [2022-12-12 01:37:47,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:37:47,292 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:47,292 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:47,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-12 01:37:47,293 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash 588433811, now seen corresponding path program 59 times [2022-12-12 01:37:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:47,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713518262] [2022-12-12 01:37:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:47,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713518262] [2022-12-12 01:37:47,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713518262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:47,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:47,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333068971] [2022-12-12 01:37:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:47,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:47,657 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:47,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1170 places, 619 transitions, 69328 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:47,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:47,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:47,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:49,305 INFO L130 PetriNetUnfolder]: 417/1247 cut-off events. [2022-12-12 01:37:49,305 INFO L131 PetriNetUnfolder]: For 115517/116167 co-relation queries the response was YES. [2022-12-12 01:37:49,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60737 conditions, 1247 events. 417/1247 cut-off events. For 115517/116167 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7862 event pairs, 34 based on Foata normal form. 33/1278 useless extension candidates. Maximal degree in co-relation 56963. Up to 964 conditions per place. [2022-12-12 01:37:49,333 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 445 selfloop transitions, 131 changer transitions 35/644 dead transitions. [2022-12-12 01:37:49,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1213 places, 644 transitions, 73527 flow [2022-12-12 01:37:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 01:37:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 01:37:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2005 transitions. [2022-12-12 01:37:49,336 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5237722048066875 [2022-12-12 01:37:49,336 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1131 predicate places. [2022-12-12 01:37:49,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 1213 places, 644 transitions, 73527 flow [2022-12-12 01:37:49,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1197 places, 609 transitions, 69297 flow [2022-12-12 01:37:49,379 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 609 transitions, 69297 flow [2022-12-12 01:37:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:49,379 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:49,379 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-12 01:37:49,379 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1105044275, now seen corresponding path program 60 times [2022-12-12 01:37:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:49,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131068180] [2022-12-12 01:37:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:49,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131068180] [2022-12-12 01:37:49,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131068180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:49,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:49,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190055475] [2022-12-12 01:37:49,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:49,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:49,716 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:49,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 609 transitions, 69297 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:49,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:49,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:49,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:51,354 INFO L130 PetriNetUnfolder]: 419/1238 cut-off events. [2022-12-12 01:37:51,354 INFO L131 PetriNetUnfolder]: For 109701/110193 co-relation queries the response was YES. [2022-12-12 01:37:51,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62035 conditions, 1238 events. 419/1238 cut-off events. For 109701/110193 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7743 event pairs, 37 based on Foata normal form. 21/1258 useless extension candidates. Maximal degree in co-relation 58199. Up to 969 conditions per place. [2022-12-12 01:37:51,375 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 478 selfloop transitions, 108 changer transitions 29/648 dead transitions. [2022-12-12 01:37:51,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1234 places, 648 transitions, 75231 flow [2022-12-12 01:37:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:37:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:37:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1741 transitions. [2022-12-12 01:37:51,380 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266182698124622 [2022-12-12 01:37:51,381 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1152 predicate places. [2022-12-12 01:37:51,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 1234 places, 648 transitions, 75231 flow [2022-12-12 01:37:51,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1226 places, 619 transitions, 71672 flow [2022-12-12 01:37:51,415 INFO L495 AbstractCegarLoop]: Abstraction has has 1226 places, 619 transitions, 71672 flow [2022-12-12 01:37:51,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:51,415 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:51,416 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:51,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-12 01:37:51,416 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1091565273, now seen corresponding path program 61 times [2022-12-12 01:37:51,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:51,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580606449] [2022-12-12 01:37:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:51,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:51,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580606449] [2022-12-12 01:37:51,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580606449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:51,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:51,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887898526] [2022-12-12 01:37:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:51,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:51,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:51,667 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:51,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1226 places, 619 transitions, 71672 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:51,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:51,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:51,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:53,168 INFO L130 PetriNetUnfolder]: 414/1249 cut-off events. [2022-12-12 01:37:53,168 INFO L131 PetriNetUnfolder]: For 123077/123577 co-relation queries the response was YES. [2022-12-12 01:37:53,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62570 conditions, 1249 events. 414/1249 cut-off events. For 123077/123577 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7935 event pairs, 31 based on Foata normal form. 21/1269 useless extension candidates. Maximal degree in co-relation 60103. Up to 961 conditions per place. [2022-12-12 01:37:53,189 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 481 selfloop transitions, 95 changer transitions 35/644 dead transitions. [2022-12-12 01:37:53,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1260 places, 644 transitions, 75971 flow [2022-12-12 01:37:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:37:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:37:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1608 transitions. [2022-12-12 01:37:53,191 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5280788177339901 [2022-12-12 01:37:53,191 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1178 predicate places. [2022-12-12 01:37:53,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 1260 places, 644 transitions, 75971 flow [2022-12-12 01:37:53,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1246 places, 609 transitions, 71601 flow [2022-12-12 01:37:53,226 INFO L495 AbstractCegarLoop]: Abstraction has has 1246 places, 609 transitions, 71601 flow [2022-12-12 01:37:53,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:53,226 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:53,226 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-12 01:37:53,231 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1117681065, now seen corresponding path program 62 times [2022-12-12 01:37:53,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:53,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082594931] [2022-12-12 01:37:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:53,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082594931] [2022-12-12 01:37:53,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082594931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:53,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:53,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:37:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834580958] [2022-12-12 01:37:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:37:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:37:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:37:53,542 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:53,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1246 places, 609 transitions, 71601 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:53,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:53,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:53,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:55,075 INFO L130 PetriNetUnfolder]: 410/1241 cut-off events. [2022-12-12 01:37:55,075 INFO L131 PetriNetUnfolder]: For 127163/127706 co-relation queries the response was YES. [2022-12-12 01:37:55,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62943 conditions, 1241 events. 410/1241 cut-off events. For 127163/127706 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7793 event pairs, 46 based on Foata normal form. 35/1275 useless extension candidates. Maximal degree in co-relation 55891. Up to 951 conditions per place. [2022-12-12 01:37:55,097 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 484 selfloop transitions, 96 changer transitions 24/637 dead transitions. [2022-12-12 01:37:55,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1282 places, 637 transitions, 76302 flow [2022-12-12 01:37:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:37:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:37:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1689 transitions. [2022-12-12 01:37:55,099 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5246971109040075 [2022-12-12 01:37:55,099 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1200 predicate places. [2022-12-12 01:37:55,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 1282 places, 637 transitions, 76302 flow [2022-12-12 01:37:55,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1273 places, 613 transitions, 73257 flow [2022-12-12 01:37:55,136 INFO L495 AbstractCegarLoop]: Abstraction has has 1273 places, 613 transitions, 73257 flow [2022-12-12 01:37:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:37:55,136 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:55,136 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-12 01:37:55,137 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1603483691, now seen corresponding path program 63 times [2022-12-12 01:37:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14792561] [2022-12-12 01:37:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:55,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:55,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14792561] [2022-12-12 01:37:55,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14792561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:55,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:55,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:37:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396484317] [2022-12-12 01:37:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:55,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:37:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:37:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:37:55,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:55,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1273 places, 613 transitions, 73257 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:55,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:55,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:57,524 INFO L130 PetriNetUnfolder]: 448/1379 cut-off events. [2022-12-12 01:37:57,524 INFO L131 PetriNetUnfolder]: For 152238/152912 co-relation queries the response was YES. [2022-12-12 01:37:57,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70511 conditions, 1379 events. 448/1379 cut-off events. For 152238/152912 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9105 event pairs, 32 based on Foata normal form. 21/1399 useless extension candidates. Maximal degree in co-relation 67966. Up to 1053 conditions per place. [2022-12-12 01:37:57,549 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 471 selfloop transitions, 200 changer transitions 20/724 dead transitions. [2022-12-12 01:37:57,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1321 places, 724 transitions, 88661 flow [2022-12-12 01:37:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 01:37:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 01:37:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2230 transitions. [2022-12-12 01:37:57,550 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5231057940417546 [2022-12-12 01:37:57,551 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1239 predicate places. [2022-12-12 01:37:57,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 1321 places, 724 transitions, 88661 flow [2022-12-12 01:37:57,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1315 places, 704 transitions, 86089 flow [2022-12-12 01:37:57,592 INFO L495 AbstractCegarLoop]: Abstraction has has 1315 places, 704 transitions, 86089 flow [2022-12-12 01:37:57,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:37:57,592 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:57,592 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:57,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-12-12 01:37:57,592 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -835816579, now seen corresponding path program 64 times [2022-12-12 01:37:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013551064] [2022-12-12 01:37:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:57,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013551064] [2022-12-12 01:37:57,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013551064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:57,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:37:57,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:37:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808651748] [2022-12-12 01:37:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:37:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:37:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:37:57,912 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:37:57,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1315 places, 704 transitions, 86089 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:37:57,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:37:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:00,132 INFO L130 PetriNetUnfolder]: 444/1398 cut-off events. [2022-12-12 01:38:00,132 INFO L131 PetriNetUnfolder]: For 160925/161339 co-relation queries the response was YES. [2022-12-12 01:38:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71624 conditions, 1398 events. 444/1398 cut-off events. For 160925/161339 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9321 event pairs, 46 based on Foata normal form. 31/1428 useless extension candidates. Maximal degree in co-relation 63363. Up to 1053 conditions per place. [2022-12-12 01:38:00,156 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 509 selfloop transitions, 166 changer transitions 22/730 dead transitions. [2022-12-12 01:38:00,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1365 places, 730 transitions, 90817 flow [2022-12-12 01:38:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 01:38:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 01:38:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2307 transitions. [2022-12-12 01:38:00,158 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.519945909398242 [2022-12-12 01:38:00,158 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1283 predicate places. [2022-12-12 01:38:00,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 1365 places, 730 transitions, 90817 flow [2022-12-12 01:38:00,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1358 places, 708 transitions, 87951 flow [2022-12-12 01:38:00,198 INFO L495 AbstractCegarLoop]: Abstraction has has 1358 places, 708 transitions, 87951 flow [2022-12-12 01:38:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:38:00,198 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:00,198 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:00,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-12-12 01:38:00,198 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2064031011, now seen corresponding path program 65 times [2022-12-12 01:38:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:00,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862423531] [2022-12-12 01:38:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862423531] [2022-12-12 01:38:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862423531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:00,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:00,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172879074] [2022-12-12 01:38:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:00,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:00,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:00,555 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:00,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1358 places, 708 transitions, 87951 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:00,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:00,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:00,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:02,355 INFO L130 PetriNetUnfolder]: 449/1416 cut-off events. [2022-12-12 01:38:02,355 INFO L131 PetriNetUnfolder]: For 172547/173095 co-relation queries the response was YES. [2022-12-12 01:38:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73783 conditions, 1416 events. 449/1416 cut-off events. For 172547/173095 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9568 event pairs, 32 based on Foata normal form. 31/1446 useless extension candidates. Maximal degree in co-relation 69637. Up to 1069 conditions per place. [2022-12-12 01:38:02,394 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 564 selfloop transitions, 116 changer transitions 29/742 dead transitions. [2022-12-12 01:38:02,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1395 places, 742 transitions, 93813 flow [2022-12-12 01:38:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:38:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:38:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1744 transitions. [2022-12-12 01:38:02,435 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5275257108287962 [2022-12-12 01:38:02,435 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1313 predicate places. [2022-12-12 01:38:02,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 1395 places, 742 transitions, 93813 flow [2022-12-12 01:38:02,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1387 places, 713 transitions, 89961 flow [2022-12-12 01:38:02,477 INFO L495 AbstractCegarLoop]: Abstraction has has 1387 places, 713 transitions, 89961 flow [2022-12-12 01:38:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:02,477 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:02,477 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:02,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-12-12 01:38:02,478 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash -372764557, now seen corresponding path program 66 times [2022-12-12 01:38:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:02,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703796357] [2022-12-12 01:38:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703796357] [2022-12-12 01:38:02,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703796357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:02,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:02,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325576070] [2022-12-12 01:38:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:02,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:02,813 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:02,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1387 places, 713 transitions, 89961 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:02,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:02,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:04,545 INFO L130 PetriNetUnfolder]: 444/1390 cut-off events. [2022-12-12 01:38:04,546 INFO L131 PetriNetUnfolder]: For 166491/167027 co-relation queries the response was YES. [2022-12-12 01:38:04,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74207 conditions, 1390 events. 444/1390 cut-off events. For 166491/167027 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9256 event pairs, 44 based on Foata normal form. 23/1412 useless extension candidates. Maximal degree in co-relation 65295. Up to 1059 conditions per place. [2022-12-12 01:38:04,571 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 551 selfloop transitions, 125 changer transitions 25/734 dead transitions. [2022-12-12 01:38:04,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1420 places, 734 transitions, 94153 flow [2022-12-12 01:38:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:38:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:38:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1571 transitions. [2022-12-12 01:38:04,572 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5311020960108181 [2022-12-12 01:38:04,572 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1338 predicate places. [2022-12-12 01:38:04,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 1420 places, 734 transitions, 94153 flow [2022-12-12 01:38:04,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1409 places, 709 transitions, 90782 flow [2022-12-12 01:38:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 1409 places, 709 transitions, 90782 flow [2022-12-12 01:38:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:04,614 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:04,614 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:04,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-12-12 01:38:04,614 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1684799495, now seen corresponding path program 67 times [2022-12-12 01:38:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:04,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423934982] [2022-12-12 01:38:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:04,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:04,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423934982] [2022-12-12 01:38:04,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423934982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:04,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:04,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94207229] [2022-12-12 01:38:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:04,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:04,952 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:04,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1409 places, 709 transitions, 90782 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:04,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:04,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:06,615 INFO L130 PetriNetUnfolder]: 437/1376 cut-off events. [2022-12-12 01:38:06,615 INFO L131 PetriNetUnfolder]: For 171479/172027 co-relation queries the response was YES. [2022-12-12 01:38:06,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74420 conditions, 1376 events. 437/1376 cut-off events. For 171479/172027 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9196 event pairs, 46 based on Foata normal form. 21/1395 useless extension candidates. Maximal degree in co-relation 71719. Up to 1046 conditions per place. [2022-12-12 01:38:06,642 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 544 selfloop transitions, 135 changer transitions 18/730 dead transitions. [2022-12-12 01:38:06,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1440 places, 730 transitions, 94996 flow [2022-12-12 01:38:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:38:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:38:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1481 transitions. [2022-12-12 01:38:06,644 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5319683908045977 [2022-12-12 01:38:06,644 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1358 predicate places. [2022-12-12 01:38:06,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 1440 places, 730 transitions, 94996 flow [2022-12-12 01:38:06,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1433 places, 712 transitions, 92542 flow [2022-12-12 01:38:06,688 INFO L495 AbstractCegarLoop]: Abstraction has has 1433 places, 712 transitions, 92542 flow [2022-12-12 01:38:06,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:06,688 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:06,688 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:06,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-12-12 01:38:06,688 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1520480893, now seen corresponding path program 68 times [2022-12-12 01:38:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:06,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410918424] [2022-12-12 01:38:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:06,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:06,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410918424] [2022-12-12 01:38:06,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410918424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:06,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:06,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231070833] [2022-12-12 01:38:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:06,979 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:07,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1433 places, 712 transitions, 92542 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:07,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:07,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:08,873 INFO L130 PetriNetUnfolder]: 450/1419 cut-off events. [2022-12-12 01:38:08,873 INFO L131 PetriNetUnfolder]: For 186143/186715 co-relation queries the response was YES. [2022-12-12 01:38:08,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77459 conditions, 1419 events. 450/1419 cut-off events. For 186143/186715 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9541 event pairs, 34 based on Foata normal form. 31/1449 useless extension candidates. Maximal degree in co-relation 68351. Up to 1074 conditions per place. [2022-12-12 01:38:08,898 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 571 selfloop transitions, 126 changer transitions 22/752 dead transitions. [2022-12-12 01:38:08,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1470 places, 752 transitions, 99435 flow [2022-12-12 01:38:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:38:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:38:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1744 transitions. [2022-12-12 01:38:08,900 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5275257108287962 [2022-12-12 01:38:08,900 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1388 predicate places. [2022-12-12 01:38:08,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 1470 places, 752 transitions, 99435 flow [2022-12-12 01:38:08,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1464 places, 730 transitions, 96387 flow [2022-12-12 01:38:08,944 INFO L495 AbstractCegarLoop]: Abstraction has has 1464 places, 730 transitions, 96387 flow [2022-12-12 01:38:08,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:08,944 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:08,945 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:08,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-12-12 01:38:08,945 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1719478067, now seen corresponding path program 69 times [2022-12-12 01:38:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:08,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605351748] [2022-12-12 01:38:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605351748] [2022-12-12 01:38:09,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605351748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:09,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:09,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027065163] [2022-12-12 01:38:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:09,306 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:09,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1464 places, 730 transitions, 96387 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:09,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:09,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:11,108 INFO L130 PetriNetUnfolder]: 450/1410 cut-off events. [2022-12-12 01:38:11,108 INFO L131 PetriNetUnfolder]: For 177304/177914 co-relation queries the response was YES. [2022-12-12 01:38:11,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79190 conditions, 1410 events. 450/1410 cut-off events. For 177304/177914 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9494 event pairs, 44 based on Foata normal form. 21/1430 useless extension candidates. Maximal degree in co-relation 69749. Up to 1083 conditions per place. [2022-12-12 01:38:11,133 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 568 selfloop transitions, 136 changer transitions 20/757 dead transitions. [2022-12-12 01:38:11,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1502 places, 757 transitions, 101576 flow [2022-12-12 01:38:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:38:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:38:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1787 transitions. [2022-12-12 01:38:11,134 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266725611553198 [2022-12-12 01:38:11,135 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1420 predicate places. [2022-12-12 01:38:11,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 1502 places, 757 transitions, 101576 flow [2022-12-12 01:38:11,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1496 places, 737 transitions, 98764 flow [2022-12-12 01:38:11,177 INFO L495 AbstractCegarLoop]: Abstraction has has 1496 places, 737 transitions, 98764 flow [2022-12-12 01:38:11,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:11,177 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:11,177 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:11,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-12-12 01:38:11,177 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2130631069, now seen corresponding path program 70 times [2022-12-12 01:38:11,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:11,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413900422] [2022-12-12 01:38:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:11,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413900422] [2022-12-12 01:38:11,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413900422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:11,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:11,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:11,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648225373] [2022-12-12 01:38:11,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:11,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:11,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:11,503 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:11,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1496 places, 737 transitions, 98764 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:11,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:11,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:11,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:13,297 INFO L130 PetriNetUnfolder]: 443/1412 cut-off events. [2022-12-12 01:38:13,297 INFO L131 PetriNetUnfolder]: For 189494/190066 co-relation queries the response was YES. [2022-12-12 01:38:13,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79689 conditions, 1412 events. 443/1412 cut-off events. For 189494/190066 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9564 event pairs, 34 based on Foata normal form. 21/1432 useless extension candidates. Maximal degree in co-relation 70040. Up to 1074 conditions per place. [2022-12-12 01:38:13,324 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 607 selfloop transitions, 84 changer transitions 27/751 dead transitions. [2022-12-12 01:38:13,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1531 places, 751 transitions, 102181 flow [2022-12-12 01:38:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:38:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:38:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1644 transitions. [2022-12-12 01:38:13,325 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.524904214559387 [2022-12-12 01:38:13,326 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1449 predicate places. [2022-12-12 01:38:13,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 1531 places, 751 transitions, 102181 flow [2022-12-12 01:38:13,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1517 places, 724 transitions, 98320 flow [2022-12-12 01:38:13,372 INFO L495 AbstractCegarLoop]: Abstraction has has 1517 places, 724 transitions, 98320 flow [2022-12-12 01:38:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:13,372 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:13,379 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:13,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-12-12 01:38:13,380 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -354875769, now seen corresponding path program 71 times [2022-12-12 01:38:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:13,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026535164] [2022-12-12 01:38:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:13,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:13,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026535164] [2022-12-12 01:38:13,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026535164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:13,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:13,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:13,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027691250] [2022-12-12 01:38:13,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:13,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:13,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:13,697 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:13,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1517 places, 724 transitions, 98320 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:13,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:13,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:13,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:15,560 INFO L130 PetriNetUnfolder]: 458/1455 cut-off events. [2022-12-12 01:38:15,560 INFO L131 PetriNetUnfolder]: For 205396/206004 co-relation queries the response was YES. [2022-12-12 01:38:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83336 conditions, 1455 events. 458/1455 cut-off events. For 205396/206004 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10011 event pairs, 43 based on Foata normal form. 37/1492 useless extension candidates. Maximal degree in co-relation 80479. Up to 1109 conditions per place. [2022-12-12 01:38:15,587 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 469 selfloop transitions, 259 changer transitions 22/783 dead transitions. [2022-12-12 01:38:15,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1562 places, 783 transitions, 108225 flow [2022-12-12 01:38:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 01:38:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 01:38:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2101 transitions. [2022-12-12 01:38:15,589 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5249875062468765 [2022-12-12 01:38:15,589 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1480 predicate places. [2022-12-12 01:38:15,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 1562 places, 783 transitions, 108225 flow [2022-12-12 01:38:15,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1556 places, 761 transitions, 105045 flow [2022-12-12 01:38:15,637 INFO L495 AbstractCegarLoop]: Abstraction has has 1556 places, 761 transitions, 105045 flow [2022-12-12 01:38:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:15,637 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:15,637 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:15,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-12-12 01:38:15,638 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:15,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash 81585451, now seen corresponding path program 72 times [2022-12-12 01:38:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:15,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191328868] [2022-12-12 01:38:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:15,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191328868] [2022-12-12 01:38:15,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191328868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:15,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:15,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889052291] [2022-12-12 01:38:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:15,906 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:15,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1556 places, 761 transitions, 105045 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:15,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:15,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:15,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:17,940 INFO L130 PetriNetUnfolder]: 453/1448 cut-off events. [2022-12-12 01:38:17,940 INFO L131 PetriNetUnfolder]: For 203178/203812 co-relation queries the response was YES. [2022-12-12 01:38:17,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84338 conditions, 1448 events. 453/1448 cut-off events. For 203178/203812 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 10009 event pairs, 42 based on Foata normal form. 43/1491 useless extension candidates. Maximal degree in co-relation 76179. Up to 1107 conditions per place. [2022-12-12 01:38:17,977 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 574 selfloop transitions, 144 changer transitions 31/782 dead transitions. [2022-12-12 01:38:17,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1591 places, 782 transitions, 109585 flow [2022-12-12 01:38:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:38:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:38:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1656 transitions. [2022-12-12 01:38:17,979 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 01:38:17,979 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1509 predicate places. [2022-12-12 01:38:17,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 1591 places, 782 transitions, 109585 flow [2022-12-12 01:38:18,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1581 places, 751 transitions, 105035 flow [2022-12-12 01:38:18,058 INFO L495 AbstractCegarLoop]: Abstraction has has 1581 places, 751 transitions, 105035 flow [2022-12-12 01:38:18,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:18,058 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:18,059 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-12-12 01:38:18,059 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1729578073, now seen corresponding path program 73 times [2022-12-12 01:38:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:18,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080861576] [2022-12-12 01:38:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080861576] [2022-12-12 01:38:18,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080861576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:18,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:18,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837495411] [2022-12-12 01:38:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:18,336 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:18,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1581 places, 751 transitions, 105035 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:18,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:18,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:18,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:20,711 INFO L130 PetriNetUnfolder]: 443/1418 cut-off events. [2022-12-12 01:38:20,712 INFO L131 PetriNetUnfolder]: For 203274/203931 co-relation queries the response was YES. [2022-12-12 01:38:20,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83923 conditions, 1418 events. 443/1418 cut-off events. For 203274/203931 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9689 event pairs, 44 based on Foata normal form. 38/1456 useless extension candidates. Maximal degree in co-relation 73802. Up to 1086 conditions per place. [2022-12-12 01:38:20,739 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 602 selfloop transitions, 108 changer transitions 21/764 dead transitions. [2022-12-12 01:38:20,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1615 places, 764 transitions, 108413 flow [2022-12-12 01:38:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:38:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:38:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1603 transitions. [2022-12-12 01:38:20,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5264367816091954 [2022-12-12 01:38:20,741 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1533 predicate places. [2022-12-12 01:38:20,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 1615 places, 764 transitions, 108413 flow [2022-12-12 01:38:20,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1606 places, 743 transitions, 105281 flow [2022-12-12 01:38:20,789 INFO L495 AbstractCegarLoop]: Abstraction has has 1606 places, 743 transitions, 105281 flow [2022-12-12 01:38:20,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:20,789 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:20,790 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:20,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-12-12 01:38:20,790 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1597668127, now seen corresponding path program 74 times [2022-12-12 01:38:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052092368] [2022-12-12 01:38:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052092368] [2022-12-12 01:38:21,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052092368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:21,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:21,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443824795] [2022-12-12 01:38:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:21,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:21,128 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:21,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1606 places, 743 transitions, 105281 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:21,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:21,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:21,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:23,031 INFO L130 PetriNetUnfolder]: 439/1408 cut-off events. [2022-12-12 01:38:23,031 INFO L131 PetriNetUnfolder]: For 211579/212208 co-relation queries the response was YES. [2022-12-12 01:38:23,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84300 conditions, 1408 events. 439/1408 cut-off events. For 211579/212208 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9605 event pairs, 32 based on Foata normal form. 25/1432 useless extension candidates. Maximal degree in co-relation 81326. Up to 1076 conditions per place. [2022-12-12 01:38:23,062 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 594 selfloop transitions, 112 changer transitions 17/756 dead transitions. [2022-12-12 01:38:23,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1641 places, 756 transitions, 108669 flow [2022-12-12 01:38:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:38:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:38:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1645 transitions. [2022-12-12 01:38:23,063 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5252234993614304 [2022-12-12 01:38:23,064 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1559 predicate places. [2022-12-12 01:38:23,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 1641 places, 756 transitions, 108669 flow [2022-12-12 01:38:23,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1632 places, 739 transitions, 106098 flow [2022-12-12 01:38:23,126 INFO L495 AbstractCegarLoop]: Abstraction has has 1632 places, 739 transitions, 106098 flow [2022-12-12 01:38:23,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:23,126 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:23,126 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-12-12 01:38:23,126 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 86381293, now seen corresponding path program 75 times [2022-12-12 01:38:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091828044] [2022-12-12 01:38:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:23,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091828044] [2022-12-12 01:38:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091828044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:23,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:23,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931712456] [2022-12-12 01:38:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:23,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:23,425 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:23,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1632 places, 739 transitions, 106098 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:23,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:23,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:23,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:25,202 INFO L130 PetriNetUnfolder]: 438/1415 cut-off events. [2022-12-12 01:38:25,202 INFO L131 PetriNetUnfolder]: For 219918/220398 co-relation queries the response was YES. [2022-12-12 01:38:25,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85272 conditions, 1415 events. 438/1415 cut-off events. For 219918/220398 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9620 event pairs, 43 based on Foata normal form. 31/1445 useless extension candidates. Maximal degree in co-relation 80506. Up to 1074 conditions per place. [2022-12-12 01:38:25,229 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 552 selfloop transitions, 157 changer transitions 24/766 dead transitions. [2022-12-12 01:38:25,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1665 places, 766 transitions, 111620 flow [2022-12-12 01:38:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:38:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:38:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1564 transitions. [2022-12-12 01:38:25,230 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 01:38:25,231 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1583 predicate places. [2022-12-12 01:38:25,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 1665 places, 766 transitions, 111620 flow [2022-12-12 01:38:25,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1660 places, 742 transitions, 107966 flow [2022-12-12 01:38:25,277 INFO L495 AbstractCegarLoop]: Abstraction has has 1660 places, 742 transitions, 107966 flow [2022-12-12 01:38:25,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:25,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:25,277 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:25,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-12-12 01:38:25,277 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1679061467, now seen corresponding path program 76 times [2022-12-12 01:38:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:25,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958322372] [2022-12-12 01:38:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:25,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:25,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958322372] [2022-12-12 01:38:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958322372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:25,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:25,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501770969] [2022-12-12 01:38:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:25,661 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:25,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1660 places, 742 transitions, 107966 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:25,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:25,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:25,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:27,511 INFO L130 PetriNetUnfolder]: 436/1393 cut-off events. [2022-12-12 01:38:27,516 INFO L131 PetriNetUnfolder]: For 213731/214367 co-relation queries the response was YES. [2022-12-12 01:38:27,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85453 conditions, 1393 events. 436/1393 cut-off events. For 213731/214367 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9350 event pairs, 44 based on Foata normal form. 31/1423 useless extension candidates. Maximal degree in co-relation 75789. Up to 1062 conditions per place. [2022-12-12 01:38:27,544 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 596 selfloop transitions, 111 changer transitions 21/761 dead transitions. [2022-12-12 01:38:27,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1694 places, 761 transitions, 112325 flow [2022-12-12 01:38:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:38:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:38:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1607 transitions. [2022-12-12 01:38:27,546 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5277504105090312 [2022-12-12 01:38:27,546 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1612 predicate places. [2022-12-12 01:38:27,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 1694 places, 761 transitions, 112325 flow [2022-12-12 01:38:27,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1686 places, 740 transitions, 109076 flow [2022-12-12 01:38:27,597 INFO L495 AbstractCegarLoop]: Abstraction has has 1686 places, 740 transitions, 109076 flow [2022-12-12 01:38:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:27,597 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:27,597 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-12-12 01:38:27,598 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1609659483, now seen corresponding path program 77 times [2022-12-12 01:38:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109619735] [2022-12-12 01:38:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:27,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:27,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109619735] [2022-12-12 01:38:27,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109619735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:27,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:27,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:27,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645126797] [2022-12-12 01:38:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:27,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:27,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:27,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:27,992 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:27,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1686 places, 740 transitions, 109076 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:27,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:27,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:29,801 INFO L130 PetriNetUnfolder]: 434/1394 cut-off events. [2022-12-12 01:38:29,802 INFO L131 PetriNetUnfolder]: For 222468/223096 co-relation queries the response was YES. [2022-12-12 01:38:29,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86405 conditions, 1394 events. 434/1394 cut-off events. For 222468/223096 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9375 event pairs, 33 based on Foata normal form. 21/1414 useless extension candidates. Maximal degree in co-relation 76616. Up to 1060 conditions per place. [2022-12-12 01:38:29,829 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 610 selfloop transitions, 95 changer transitions 21/759 dead transitions. [2022-12-12 01:38:29,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1720 places, 759 transitions, 113469 flow [2022-12-12 01:38:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:38:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:38:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1599 transitions. [2022-12-12 01:38:29,831 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5251231527093596 [2022-12-12 01:38:29,831 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1638 predicate places. [2022-12-12 01:38:29,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 1720 places, 759 transitions, 113469 flow [2022-12-12 01:38:29,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1712 places, 738 transitions, 110178 flow [2022-12-12 01:38:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 1712 places, 738 transitions, 110178 flow [2022-12-12 01:38:29,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:29,881 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:29,881 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-12-12 01:38:29,881 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1630868851, now seen corresponding path program 78 times [2022-12-12 01:38:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476079713] [2022-12-12 01:38:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476079713] [2022-12-12 01:38:30,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476079713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:30,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:30,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707795279] [2022-12-12 01:38:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:30,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:30,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:30,213 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:30,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1712 places, 738 transitions, 110178 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:30,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:30,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:32,352 INFO L130 PetriNetUnfolder]: 436/1403 cut-off events. [2022-12-12 01:38:32,352 INFO L131 PetriNetUnfolder]: For 234749/235589 co-relation queries the response was YES. [2022-12-12 01:38:32,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88064 conditions, 1403 events. 436/1403 cut-off events. For 234749/235589 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9441 event pairs, 42 based on Foata normal form. 33/1435 useless extension candidates. Maximal degree in co-relation 77991. Up to 1067 conditions per place. [2022-12-12 01:38:32,381 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 601 selfloop transitions, 110 changer transitions 21/765 dead transitions. [2022-12-12 01:38:32,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1748 places, 765 transitions, 115869 flow [2022-12-12 01:38:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:38:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:38:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1690 transitions. [2022-12-12 01:38:32,383 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5250077663870767 [2022-12-12 01:38:32,383 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1666 predicate places. [2022-12-12 01:38:32,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 1748 places, 765 transitions, 115869 flow [2022-12-12 01:38:32,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1742 places, 744 transitions, 112539 flow [2022-12-12 01:38:32,433 INFO L495 AbstractCegarLoop]: Abstraction has has 1742 places, 744 transitions, 112539 flow [2022-12-12 01:38:32,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:32,433 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:32,434 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:32,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-12-12 01:38:32,434 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1631490807, now seen corresponding path program 79 times [2022-12-12 01:38:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517010510] [2022-12-12 01:38:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517010510] [2022-12-12 01:38:32,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517010510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:32,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:32,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412458270] [2022-12-12 01:38:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:32,734 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:32,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1742 places, 744 transitions, 112539 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:32,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:32,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:32,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:34,908 INFO L130 PetriNetUnfolder]: 430/1380 cut-off events. [2022-12-12 01:38:34,909 INFO L131 PetriNetUnfolder]: For 233930/234590 co-relation queries the response was YES. [2022-12-12 01:38:34,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88280 conditions, 1380 events. 430/1380 cut-off events. For 233930/234590 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9256 event pairs, 35 based on Foata normal form. 31/1410 useless extension candidates. Maximal degree in co-relation 85111. Up to 1056 conditions per place. [2022-12-12 01:38:34,938 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 615 selfloop transitions, 97 changer transitions 15/760 dead transitions. [2022-12-12 01:38:34,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1779 places, 760 transitions, 116533 flow [2022-12-12 01:38:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:38:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:38:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1722 transitions. [2022-12-12 01:38:34,939 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5208711433756806 [2022-12-12 01:38:34,940 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1697 predicate places. [2022-12-12 01:38:34,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 1779 places, 760 transitions, 116533 flow [2022-12-12 01:38:34,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1772 places, 745 transitions, 114121 flow [2022-12-12 01:38:34,989 INFO L495 AbstractCegarLoop]: Abstraction has has 1772 places, 745 transitions, 114121 flow [2022-12-12 01:38:34,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:34,989 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:34,990 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:34,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-12-12 01:38:34,990 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:34,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1182023003, now seen corresponding path program 80 times [2022-12-12 01:38:34,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:34,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905361134] [2022-12-12 01:38:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:35,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:35,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905361134] [2022-12-12 01:38:35,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905361134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:35,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:35,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935267514] [2022-12-12 01:38:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:35,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:35,308 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:35,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1772 places, 745 transitions, 114121 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:35,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:35,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:35,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:37,739 INFO L130 PetriNetUnfolder]: 435/1400 cut-off events. [2022-12-12 01:38:37,739 INFO L131 PetriNetUnfolder]: For 239819/240487 co-relation queries the response was YES. [2022-12-12 01:38:37,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90522 conditions, 1400 events. 435/1400 cut-off events. For 239819/240487 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9447 event pairs, 36 based on Foata normal form. 31/1429 useless extension candidates. Maximal degree in co-relation 80040. Up to 1070 conditions per place. [2022-12-12 01:38:37,769 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 540 selfloop transitions, 178 changer transitions 22/773 dead transitions. [2022-12-12 01:38:37,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1818 places, 773 transitions, 120096 flow [2022-12-12 01:38:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 01:38:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 01:38:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2134 transitions. [2022-12-12 01:38:37,771 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5218879921741257 [2022-12-12 01:38:37,771 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1736 predicate places. [2022-12-12 01:38:37,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 1818 places, 773 transitions, 120096 flow [2022-12-12 01:38:37,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1812 places, 751 transitions, 116520 flow [2022-12-12 01:38:37,823 INFO L495 AbstractCegarLoop]: Abstraction has has 1812 places, 751 transitions, 116520 flow [2022-12-12 01:38:37,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:37,823 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:37,823 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-12-12 01:38:37,831 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash -165990919, now seen corresponding path program 81 times [2022-12-12 01:38:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:37,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003214470] [2022-12-12 01:38:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:38,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:38,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003214470] [2022-12-12 01:38:38,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003214470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:38,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:38,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458914472] [2022-12-12 01:38:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:38,125 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:38,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1812 places, 751 transitions, 116520 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:38,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:38,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:38,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:41,266 INFO L130 PetriNetUnfolder]: 455/1451 cut-off events. [2022-12-12 01:38:41,266 INFO L131 PetriNetUnfolder]: For 245778/246452 co-relation queries the response was YES. [2022-12-12 01:38:41,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96062 conditions, 1451 events. 455/1451 cut-off events. For 245778/246452 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9947 event pairs, 40 based on Foata normal form. 31/1482 useless extension candidates. Maximal degree in co-relation 90924. Up to 1124 conditions per place. [2022-12-12 01:38:41,300 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 560 selfloop transitions, 188 changer transitions 36/817 dead transitions. [2022-12-12 01:38:41,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1854 places, 817 transitions, 128801 flow [2022-12-12 01:38:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 01:38:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 01:38:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1966 transitions. [2022-12-12 01:38:41,301 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5255279337075648 [2022-12-12 01:38:41,301 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1772 predicate places. [2022-12-12 01:38:41,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 1854 places, 817 transitions, 128801 flow [2022-12-12 01:38:41,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1846 places, 781 transitions, 122873 flow [2022-12-12 01:38:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 1846 places, 781 transitions, 122873 flow [2022-12-12 01:38:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:41,363 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:41,363 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-12-12 01:38:41,363 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -536922087, now seen corresponding path program 82 times [2022-12-12 01:38:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:41,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095734219] [2022-12-12 01:38:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:41,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095734219] [2022-12-12 01:38:41,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095734219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:41,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:41,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411502691] [2022-12-12 01:38:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:41,672 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:41,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1846 places, 781 transitions, 122873 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:41,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:41,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:44,236 INFO L130 PetriNetUnfolder]: 437/1409 cut-off events. [2022-12-12 01:38:44,237 INFO L131 PetriNetUnfolder]: For 249647/250569 co-relation queries the response was YES. [2022-12-12 01:38:44,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94065 conditions, 1409 events. 437/1409 cut-off events. For 249647/250569 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9562 event pairs, 32 based on Foata normal form. 31/1439 useless extension candidates. Maximal degree in co-relation 88865. Up to 1086 conditions per place. [2022-12-12 01:38:44,278 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 656 selfloop transitions, 75 changer transitions 24/788 dead transitions. [2022-12-12 01:38:44,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1880 places, 788 transitions, 125537 flow [2022-12-12 01:38:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:38:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:38:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1588 transitions. [2022-12-12 01:38:44,280 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5215106732348112 [2022-12-12 01:38:44,281 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1798 predicate places. [2022-12-12 01:38:44,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 1880 places, 788 transitions, 125537 flow [2022-12-12 01:38:44,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1848 places, 764 transitions, 121544 flow [2022-12-12 01:38:44,337 INFO L495 AbstractCegarLoop]: Abstraction has has 1848 places, 764 transitions, 121544 flow [2022-12-12 01:38:44,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:44,337 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:44,337 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:44,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-12-12 01:38:44,337 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash 428457809, now seen corresponding path program 83 times [2022-12-12 01:38:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:44,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927621089] [2022-12-12 01:38:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:44,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:44,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:44,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927621089] [2022-12-12 01:38:44,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927621089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:44,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:44,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:38:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76684394] [2022-12-12 01:38:44,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:44,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:38:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:38:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:38:44,636 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:44,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1848 places, 764 transitions, 121544 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:44,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:44,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:46,999 INFO L130 PetriNetUnfolder]: 440/1404 cut-off events. [2022-12-12 01:38:46,999 INFO L131 PetriNetUnfolder]: For 250780/251478 co-relation queries the response was YES. [2022-12-12 01:38:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95275 conditions, 1404 events. 440/1404 cut-off events. For 250780/251478 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9479 event pairs, 41 based on Foata normal form. 31/1435 useless extension candidates. Maximal degree in co-relation 85895. Up to 1087 conditions per place. [2022-12-12 01:38:47,030 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 605 selfloop transitions, 130 changer transitions 17/785 dead transitions. [2022-12-12 01:38:47,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1880 places, 785 transitions, 126549 flow [2022-12-12 01:38:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:38:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:38:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1525 transitions. [2022-12-12 01:38:47,032 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.531173807035876 [2022-12-12 01:38:47,032 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1798 predicate places. [2022-12-12 01:38:47,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 1880 places, 785 transitions, 126549 flow [2022-12-12 01:38:47,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1875 places, 768 transitions, 123681 flow [2022-12-12 01:38:47,087 INFO L495 AbstractCegarLoop]: Abstraction has has 1875 places, 768 transitions, 123681 flow [2022-12-12 01:38:47,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:38:47,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:47,087 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-12-12 01:38:47,087 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash -887477729, now seen corresponding path program 84 times [2022-12-12 01:38:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:47,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608433978] [2022-12-12 01:38:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:47,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:47,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608433978] [2022-12-12 01:38:47,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608433978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:47,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:47,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924722771] [2022-12-12 01:38:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:47,403 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:47,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1875 places, 768 transitions, 123681 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:47,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:47,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:47,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:49,888 INFO L130 PetriNetUnfolder]: 433/1383 cut-off events. [2022-12-12 01:38:49,889 INFO L131 PetriNetUnfolder]: For 253901/254837 co-relation queries the response was YES. [2022-12-12 01:38:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94953 conditions, 1383 events. 433/1383 cut-off events. For 253901/254837 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9309 event pairs, 42 based on Foata normal form. 33/1415 useless extension candidates. Maximal degree in co-relation 89629. Up to 1070 conditions per place. [2022-12-12 01:38:49,919 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 638 selfloop transitions, 75 changer transitions 29/775 dead transitions. [2022-12-12 01:38:49,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1909 places, 775 transitions, 126347 flow [2022-12-12 01:38:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:38:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:38:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1587 transitions. [2022-12-12 01:38:49,921 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5211822660098522 [2022-12-12 01:38:49,921 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1827 predicate places. [2022-12-12 01:38:49,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 1909 places, 775 transitions, 126347 flow [2022-12-12 01:38:49,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1864 places, 746 transitions, 121408 flow [2022-12-12 01:38:49,979 INFO L495 AbstractCegarLoop]: Abstraction has has 1864 places, 746 transitions, 121408 flow [2022-12-12 01:38:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:49,980 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:49,980 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-12-12 01:38:49,981 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1896866031, now seen corresponding path program 85 times [2022-12-12 01:38:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417162379] [2022-12-12 01:38:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:50,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417162379] [2022-12-12 01:38:50,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417162379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:50,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:50,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:38:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475356415] [2022-12-12 01:38:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:38:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:38:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:38:50,402 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:50,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1864 places, 746 transitions, 121408 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:50,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:50,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:50,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:52,364 INFO L130 PetriNetUnfolder]: 431/1386 cut-off events. [2022-12-12 01:38:52,364 INFO L131 PetriNetUnfolder]: For 270305/271013 co-relation queries the response was YES. [2022-12-12 01:38:52,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95050 conditions, 1386 events. 431/1386 cut-off events. For 270305/271013 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9321 event pairs, 29 based on Foata normal form. 31/1416 useless extension candidates. Maximal degree in co-relation 85445. Up to 1058 conditions per place. [2022-12-12 01:38:52,396 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 605 selfloop transitions, 108 changer transitions 16/762 dead transitions. [2022-12-12 01:38:52,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1902 places, 762 transitions, 125598 flow [2022-12-12 01:38:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:38:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:38:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1773 transitions. [2022-12-12 01:38:52,397 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5225464190981433 [2022-12-12 01:38:52,397 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1820 predicate places. [2022-12-12 01:38:52,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 1902 places, 762 transitions, 125598 flow [2022-12-12 01:38:52,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1895 places, 746 transitions, 122834 flow [2022-12-12 01:38:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 1895 places, 746 transitions, 122834 flow [2022-12-12 01:38:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:38:52,455 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:52,455 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-12-12 01:38:52,455 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:52,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2014156271, now seen corresponding path program 86 times [2022-12-12 01:38:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:52,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631138962] [2022-12-12 01:38:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:52,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631138962] [2022-12-12 01:38:52,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631138962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:52,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:52,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89879558] [2022-12-12 01:38:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:52,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:52,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1895 places, 746 transitions, 122834 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:52,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:52,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:54,931 INFO L130 PetriNetUnfolder]: 430/1383 cut-off events. [2022-12-12 01:38:54,932 INFO L131 PetriNetUnfolder]: For 276623/277339 co-relation queries the response was YES. [2022-12-12 01:38:54,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96148 conditions, 1383 events. 430/1383 cut-off events. For 276623/277339 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9286 event pairs, 47 based on Foata normal form. 31/1413 useless extension candidates. Maximal degree in co-relation 90700. Up to 1058 conditions per place. [2022-12-12 01:38:54,963 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 596 selfloop transitions, 118 changer transitions 15/762 dead transitions. [2022-12-12 01:38:54,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1934 places, 762 transitions, 127056 flow [2022-12-12 01:38:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:38:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:38:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1816 transitions. [2022-12-12 01:38:54,964 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2022-12-12 01:38:54,964 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1852 predicate places. [2022-12-12 01:38:54,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 1934 places, 762 transitions, 127056 flow [2022-12-12 01:38:55,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1927 places, 747 transitions, 124434 flow [2022-12-12 01:38:55,019 INFO L495 AbstractCegarLoop]: Abstraction has has 1927 places, 747 transitions, 124434 flow [2022-12-12 01:38:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:55,019 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:55,019 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-12-12 01:38:55,019 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 806898665, now seen corresponding path program 87 times [2022-12-12 01:38:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528593854] [2022-12-12 01:38:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:55,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:55,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528593854] [2022-12-12 01:38:55,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528593854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:55,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:55,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:55,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719544896] [2022-12-12 01:38:55,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:55,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:55,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:55,345 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:55,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1927 places, 747 transitions, 124434 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:55,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:55,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:58,194 INFO L130 PetriNetUnfolder]: 443/1428 cut-off events. [2022-12-12 01:38:58,194 INFO L131 PetriNetUnfolder]: For 290930/291840 co-relation queries the response was YES. [2022-12-12 01:38:58,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100432 conditions, 1428 events. 443/1428 cut-off events. For 290930/291840 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9742 event pairs, 43 based on Foata normal form. 31/1458 useless extension candidates. Maximal degree in co-relation 88702. Up to 1094 conditions per place. [2022-12-12 01:38:58,229 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 473 selfloop transitions, 263 changer transitions 19/788 dead transitions. [2022-12-12 01:38:58,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1979 places, 788 transitions, 133099 flow [2022-12-12 01:38:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-12 01:38:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-12 01:38:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2405 transitions. [2022-12-12 01:38:58,230 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.521578833224897 [2022-12-12 01:38:58,231 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1897 predicate places. [2022-12-12 01:38:58,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 1979 places, 788 transitions, 133099 flow [2022-12-12 01:38:58,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1973 places, 769 transitions, 129743 flow [2022-12-12 01:38:58,291 INFO L495 AbstractCegarLoop]: Abstraction has has 1973 places, 769 transitions, 129743 flow [2022-12-12 01:38:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:58,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:58,291 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-12-12 01:38:58,292 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1446407083, now seen corresponding path program 88 times [2022-12-12 01:38:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296545843] [2022-12-12 01:38:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:58,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:58,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296545843] [2022-12-12 01:38:58,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296545843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:58,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:38:58,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:38:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595820001] [2022-12-12 01:38:58,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:58,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:38:58,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:38:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:38:58,627 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:38:58,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1973 places, 769 transitions, 129743 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:38:58,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:58,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:38:58,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:01,724 INFO L130 PetriNetUnfolder]: 438/1441 cut-off events. [2022-12-12 01:39:01,724 INFO L131 PetriNetUnfolder]: For 309503/310235 co-relation queries the response was YES. [2022-12-12 01:39:01,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100965 conditions, 1441 events. 438/1441 cut-off events. For 309503/310235 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9916 event pairs, 41 based on Foata normal form. 31/1471 useless extension candidates. Maximal degree in co-relation 89366. Up to 1087 conditions per place. [2022-12-12 01:39:01,922 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 633 selfloop transitions, 104 changer transitions 15/785 dead transitions. [2022-12-12 01:39:01,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2010 places, 785 transitions, 134075 flow [2022-12-12 01:39:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:39:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:39:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1728 transitions. [2022-12-12 01:39:01,923 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2022-12-12 01:39:01,924 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1928 predicate places. [2022-12-12 01:39:01,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 2010 places, 785 transitions, 134075 flow [2022-12-12 01:39:01,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2003 places, 770 transitions, 131393 flow [2022-12-12 01:39:01,984 INFO L495 AbstractCegarLoop]: Abstraction has has 2003 places, 770 transitions, 131393 flow [2022-12-12 01:39:01,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:01,984 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:01,984 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:01,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-12-12 01:39:01,985 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1669933615, now seen corresponding path program 89 times [2022-12-12 01:39:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:01,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445249232] [2022-12-12 01:39:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:02,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445249232] [2022-12-12 01:39:02,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445249232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:02,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:02,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:39:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581923485] [2022-12-12 01:39:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:39:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:39:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:39:02,357 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:02,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2003 places, 770 transitions, 131393 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:02,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:02,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:04,462 INFO L130 PetriNetUnfolder]: 438/1423 cut-off events. [2022-12-12 01:39:04,462 INFO L131 PetriNetUnfolder]: For 304412/305330 co-relation queries the response was YES. [2022-12-12 01:39:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102166 conditions, 1423 events. 438/1423 cut-off events. For 304412/305330 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9741 event pairs, 43 based on Foata normal form. 21/1443 useless extension candidates. Maximal degree in co-relation 92120. Up to 1088 conditions per place. [2022-12-12 01:39:04,495 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 576 selfloop transitions, 152 changer transitions 25/786 dead transitions. [2022-12-12 01:39:04,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2040 places, 786 transitions, 135759 flow [2022-12-12 01:39:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:39:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:39:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1739 transitions. [2022-12-12 01:39:04,497 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5260133091349062 [2022-12-12 01:39:04,497 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1958 predicate places. [2022-12-12 01:39:04,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 2040 places, 786 transitions, 135759 flow [2022-12-12 01:39:04,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2033 places, 761 transitions, 131241 flow [2022-12-12 01:39:04,557 INFO L495 AbstractCegarLoop]: Abstraction has has 2033 places, 761 transitions, 131241 flow [2022-12-12 01:39:04,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:04,558 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:04,558 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:04,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-12-12 01:39:04,558 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1727606361, now seen corresponding path program 90 times [2022-12-12 01:39:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:04,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759501449] [2022-12-12 01:39:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759501449] [2022-12-12 01:39:04,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759501449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:04,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:04,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566211464] [2022-12-12 01:39:04,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:04,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:04,967 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:04,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2033 places, 761 transitions, 131241 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:04,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:04,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:04,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:07,005 INFO L130 PetriNetUnfolder]: 430/1397 cut-off events. [2022-12-12 01:39:07,005 INFO L131 PetriNetUnfolder]: For 290303/291055 co-relation queries the response was YES. [2022-12-12 01:39:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101918 conditions, 1397 events. 430/1397 cut-off events. For 290303/291055 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9545 event pairs, 30 based on Foata normal form. 21/1417 useless extension candidates. Maximal degree in co-relation 91758. Up to 1073 conditions per place. [2022-12-12 01:39:07,039 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 602 selfloop transitions, 113 changer transitions 25/773 dead transitions. [2022-12-12 01:39:07,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2068 places, 773 transitions, 134887 flow [2022-12-12 01:39:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:39:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:39:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1650 transitions. [2022-12-12 01:39:07,040 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5268199233716475 [2022-12-12 01:39:07,041 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1986 predicate places. [2022-12-12 01:39:07,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 2068 places, 773 transitions, 134887 flow [2022-12-12 01:39:07,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2057 places, 748 transitions, 130328 flow [2022-12-12 01:39:07,233 INFO L495 AbstractCegarLoop]: Abstraction has has 2057 places, 748 transitions, 130328 flow [2022-12-12 01:39:07,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:07,233 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:07,233 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-12-12 01:39:07,234 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:07,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1982602165, now seen corresponding path program 91 times [2022-12-12 01:39:07,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:07,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734186451] [2022-12-12 01:39:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:07,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:07,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734186451] [2022-12-12 01:39:07,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734186451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:07,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:07,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112065136] [2022-12-12 01:39:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:07,546 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:07,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2057 places, 748 transitions, 130328 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:07,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:07,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:09,890 INFO L130 PetriNetUnfolder]: 424/1380 cut-off events. [2022-12-12 01:39:09,891 INFO L131 PetriNetUnfolder]: For 301539/302359 co-relation queries the response was YES. [2022-12-12 01:39:09,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102018 conditions, 1380 events. 424/1380 cut-off events. For 301539/302359 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9395 event pairs, 29 based on Foata normal form. 34/1414 useless extension candidates. Maximal degree in co-relation 90232. Up to 1062 conditions per place. [2022-12-12 01:39:09,924 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 628 selfloop transitions, 83 changer transitions 17/761 dead transitions. [2022-12-12 01:39:09,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2091 places, 761 transitions, 134168 flow [2022-12-12 01:39:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:39:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:39:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1593 transitions. [2022-12-12 01:39:09,926 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5231527093596059 [2022-12-12 01:39:09,926 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2009 predicate places. [2022-12-12 01:39:09,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 2091 places, 761 transitions, 134168 flow [2022-12-12 01:39:09,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2082 places, 744 transitions, 131019 flow [2022-12-12 01:39:09,987 INFO L495 AbstractCegarLoop]: Abstraction has has 2082 places, 744 transitions, 131019 flow [2022-12-12 01:39:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:09,987 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:09,987 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-12-12 01:39:09,987 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash 707722951, now seen corresponding path program 92 times [2022-12-12 01:39:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996628] [2022-12-12 01:39:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996628] [2022-12-12 01:39:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:10,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313513487] [2022-12-12 01:39:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:10,315 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:10,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2082 places, 744 transitions, 131019 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:10,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:10,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:12,912 INFO L130 PetriNetUnfolder]: 418/1363 cut-off events. [2022-12-12 01:39:12,913 INFO L131 PetriNetUnfolder]: For 304493/305555 co-relation queries the response was YES. [2022-12-12 01:39:12,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101721 conditions, 1363 events. 418/1363 cut-off events. For 304493/305555 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9215 event pairs, 35 based on Foata normal form. 33/1395 useless extension candidates. Maximal degree in co-relation 90748. Up to 1047 conditions per place. [2022-12-12 01:39:12,947 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 607 selfloop transitions, 83 changer transitions 28/751 dead transitions. [2022-12-12 01:39:12,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2116 places, 751 transitions, 133749 flow [2022-12-12 01:39:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:39:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:39:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1592 transitions. [2022-12-12 01:39:12,949 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5228243021346469 [2022-12-12 01:39:12,949 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2034 predicate places. [2022-12-12 01:39:12,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 2116 places, 751 transitions, 133749 flow [2022-12-12 01:39:13,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2075 places, 723 transitions, 128532 flow [2022-12-12 01:39:13,011 INFO L495 AbstractCegarLoop]: Abstraction has has 2075 places, 723 transitions, 128532 flow [2022-12-12 01:39:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:13,011 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:13,011 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-12-12 01:39:13,011 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 536709177, now seen corresponding path program 93 times [2022-12-12 01:39:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477746048] [2022-12-12 01:39:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:13,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:13,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477746048] [2022-12-12 01:39:13,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477746048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:13,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:13,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:39:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051101332] [2022-12-12 01:39:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:39:13,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:39:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:39:13,292 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:13,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2075 places, 723 transitions, 128532 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:13,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:13,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:13,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:15,325 INFO L130 PetriNetUnfolder]: 416/1342 cut-off events. [2022-12-12 01:39:15,325 INFO L131 PetriNetUnfolder]: For 315209/316218 co-relation queries the response was YES. [2022-12-12 01:39:15,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101768 conditions, 1342 events. 416/1342 cut-off events. For 315209/316218 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8993 event pairs, 30 based on Foata normal form. 35/1376 useless extension candidates. Maximal degree in co-relation 98053. Up to 1036 conditions per place. [2022-12-12 01:39:15,357 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 586 selfloop transitions, 105 changer transitions 15/739 dead transitions. [2022-12-12 01:39:15,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2110 places, 739 transitions, 132932 flow [2022-12-12 01:39:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:39:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:39:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1645 transitions. [2022-12-12 01:39:15,359 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5252234993614304 [2022-12-12 01:39:15,359 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2028 predicate places. [2022-12-12 01:39:15,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 2110 places, 739 transitions, 132932 flow [2022-12-12 01:39:15,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2102 places, 724 transitions, 130100 flow [2022-12-12 01:39:15,416 INFO L495 AbstractCegarLoop]: Abstraction has has 2102 places, 724 transitions, 130100 flow [2022-12-12 01:39:15,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:15,416 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:15,416 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-12-12 01:39:15,417 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 813599943, now seen corresponding path program 94 times [2022-12-12 01:39:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494682730] [2022-12-12 01:39:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:15,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:15,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494682730] [2022-12-12 01:39:15,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494682730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:15,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:15,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:39:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558496074] [2022-12-12 01:39:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:39:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:39:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:39:15,700 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:15,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2102 places, 724 transitions, 130100 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:15,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:15,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:17,795 INFO L130 PetriNetUnfolder]: 411/1328 cut-off events. [2022-12-12 01:39:17,795 INFO L131 PetriNetUnfolder]: For 308786/309692 co-relation queries the response was YES. [2022-12-12 01:39:17,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101891 conditions, 1328 events. 411/1328 cut-off events. For 308786/309692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8893 event pairs, 30 based on Foata normal form. 33/1361 useless extension candidates. Maximal degree in co-relation 98137. Up to 1026 conditions per place. [2022-12-12 01:39:17,828 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 582 selfloop transitions, 92 changer transitions 24/731 dead transitions. [2022-12-12 01:39:17,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2134 places, 731 transitions, 132818 flow [2022-12-12 01:39:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:39:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:39:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1510 transitions. [2022-12-12 01:39:17,829 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5259491466388018 [2022-12-12 01:39:17,830 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2052 predicate places. [2022-12-12 01:39:17,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 2134 places, 731 transitions, 132818 flow [2022-12-12 01:39:17,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2119 places, 707 transitions, 128249 flow [2022-12-12 01:39:17,887 INFO L495 AbstractCegarLoop]: Abstraction has has 2119 places, 707 transitions, 128249 flow [2022-12-12 01:39:17,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:17,887 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:17,887 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:17,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-12-12 01:39:17,887 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:17,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash -521827365, now seen corresponding path program 95 times [2022-12-12 01:39:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:17,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075915335] [2022-12-12 01:39:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:18,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:18,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075915335] [2022-12-12 01:39:18,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075915335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:18,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:18,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604301933] [2022-12-12 01:39:18,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:18,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:18,205 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:18,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2119 places, 707 transitions, 128249 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:18,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:18,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:18,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:20,317 INFO L130 PetriNetUnfolder]: 405/1328 cut-off events. [2022-12-12 01:39:20,317 INFO L131 PetriNetUnfolder]: For 318266/319044 co-relation queries the response was YES. [2022-12-12 01:39:20,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101345 conditions, 1328 events. 405/1328 cut-off events. For 318266/319044 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8874 event pairs, 42 based on Foata normal form. 23/1350 useless extension candidates. Maximal degree in co-relation 90215. Up to 1009 conditions per place. [2022-12-12 01:39:20,350 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 576 selfloop transitions, 69 changer transitions 36/714 dead transitions. [2022-12-12 01:39:20,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2151 places, 714 transitions, 130950 flow [2022-12-12 01:39:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:39:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:39:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1505 transitions. [2022-12-12 01:39:20,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5242075931731104 [2022-12-12 01:39:20,352 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2069 predicate places. [2022-12-12 01:39:20,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 2151 places, 714 transitions, 130950 flow [2022-12-12 01:39:20,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2004 places, 678 transitions, 124026 flow [2022-12-12 01:39:20,406 INFO L495 AbstractCegarLoop]: Abstraction has has 2004 places, 678 transitions, 124026 flow [2022-12-12 01:39:20,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:20,406 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:20,407 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-12-12 01:39:20,407 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 445299301, now seen corresponding path program 96 times [2022-12-12 01:39:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:20,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466338896] [2022-12-12 01:39:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:20,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466338896] [2022-12-12 01:39:20,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466338896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:20,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:20,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:39:20,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520138269] [2022-12-12 01:39:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:20,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:39:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:39:20,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:39:20,752 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:20,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2004 places, 678 transitions, 124026 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:39:20,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:20,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:22,974 INFO L130 PetriNetUnfolder]: 398/1291 cut-off events. [2022-12-12 01:39:22,974 INFO L131 PetriNetUnfolder]: For 317444/318358 co-relation queries the response was YES. [2022-12-12 01:39:22,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99767 conditions, 1291 events. 398/1291 cut-off events. For 317444/318358 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8512 event pairs, 29 based on Foata normal form. 23/1313 useless extension candidates. Maximal degree in co-relation 88724. Up to 982 conditions per place. [2022-12-12 01:39:23,009 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 568 selfloop transitions, 72 changer transitions 14/687 dead transitions. [2022-12-12 01:39:23,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2038 places, 687 transitions, 127068 flow [2022-12-12 01:39:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:39:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:39:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1582 transitions. [2022-12-12 01:39:23,011 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5195402298850574 [2022-12-12 01:39:23,011 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1956 predicate places. [2022-12-12 01:39:23,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 2038 places, 687 transitions, 127068 flow [2022-12-12 01:39:23,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2028 places, 673 transitions, 124346 flow [2022-12-12 01:39:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 2028 places, 673 transitions, 124346 flow [2022-12-12 01:39:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:39:23,070 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:23,070 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:23,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-12-12 01:39:23,070 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -598731461, now seen corresponding path program 97 times [2022-12-12 01:39:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316393736] [2022-12-12 01:39:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:23,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:23,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316393736] [2022-12-12 01:39:23,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316393736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:23,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:23,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095746422] [2022-12-12 01:39:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:23,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:23,399 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:23,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2028 places, 673 transitions, 124346 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:23,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:23,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:23,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:25,597 INFO L130 PetriNetUnfolder]: 393/1281 cut-off events. [2022-12-12 01:39:25,597 INFO L131 PetriNetUnfolder]: For 321935/322529 co-relation queries the response was YES. [2022-12-12 01:39:25,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99908 conditions, 1281 events. 393/1281 cut-off events. For 321935/322529 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8442 event pairs, 34 based on Foata normal form. 21/1302 useless extension candidates. Maximal degree in co-relation 88971. Up to 973 conditions per place. [2022-12-12 01:39:25,629 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 526 selfloop transitions, 78 changer transitions 43/680 dead transitions. [2022-12-12 01:39:25,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2062 places, 680 transitions, 127004 flow [2022-12-12 01:39:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:39:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:39:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1591 transitions. [2022-12-12 01:39:25,630 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5224958949096881 [2022-12-12 01:39:25,631 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1980 predicate places. [2022-12-12 01:39:25,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 2062 places, 680 transitions, 127004 flow [2022-12-12 01:39:25,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2012 places, 637 transitions, 118564 flow [2022-12-12 01:39:25,686 INFO L495 AbstractCegarLoop]: Abstraction has has 2012 places, 637 transitions, 118564 flow [2022-12-12 01:39:25,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:25,686 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:25,686 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-12-12 01:39:25,686 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 102581395, now seen corresponding path program 98 times [2022-12-12 01:39:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876059230] [2022-12-12 01:39:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876059230] [2022-12-12 01:39:26,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876059230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:26,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:26,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:39:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485283170] [2022-12-12 01:39:26,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:39:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:39:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:39:26,031 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:26,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2012 places, 637 transitions, 118564 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:39:26,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:26,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:26,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:27,989 INFO L130 PetriNetUnfolder]: 383/1235 cut-off events. [2022-12-12 01:39:27,990 INFO L131 PetriNetUnfolder]: For 328438/329250 co-relation queries the response was YES. [2022-12-12 01:39:27,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97251 conditions, 1235 events. 383/1235 cut-off events. For 328438/329250 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8006 event pairs, 44 based on Foata normal form. 33/1267 useless extension candidates. Maximal degree in co-relation 91059. Up to 936 conditions per place. [2022-12-12 01:39:28,019 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 531 selfloop transitions, 57 changer transitions 23/644 dead transitions. [2022-12-12 01:39:28,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2044 places, 644 transitions, 121167 flow [2022-12-12 01:39:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:39:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:39:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1491 transitions. [2022-12-12 01:39:28,021 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5193312434691745 [2022-12-12 01:39:28,021 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1962 predicate places. [2022-12-12 01:39:28,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 2044 places, 644 transitions, 121167 flow [2022-12-12 01:39:28,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1853 places, 621 transitions, 116601 flow [2022-12-12 01:39:28,074 INFO L495 AbstractCegarLoop]: Abstraction has has 1853 places, 621 transitions, 116601 flow [2022-12-12 01:39:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:39:28,074 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:28,074 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:28,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-12-12 01:39:28,074 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1677194069, now seen corresponding path program 99 times [2022-12-12 01:39:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:28,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594375491] [2022-12-12 01:39:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:28,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:28,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594375491] [2022-12-12 01:39:28,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594375491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:28,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:28,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:28,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869360120] [2022-12-12 01:39:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:28,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:28,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:28,475 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:28,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1853 places, 621 transitions, 116601 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:28,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:28,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:28,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:30,319 INFO L130 PetriNetUnfolder]: 386/1242 cut-off events. [2022-12-12 01:39:30,319 INFO L131 PetriNetUnfolder]: For 345200/346020 co-relation queries the response was YES. [2022-12-12 01:39:30,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97941 conditions, 1242 events. 386/1242 cut-off events. For 345200/346020 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8050 event pairs, 48 based on Foata normal form. 31/1271 useless extension candidates. Maximal degree in co-relation 86785. Up to 933 conditions per place. [2022-12-12 01:39:30,351 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 458 selfloop transitions, 99 changer transitions 49/639 dead transitions. [2022-12-12 01:39:30,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1886 places, 639 transitions, 121389 flow [2022-12-12 01:39:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:39:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:39:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1554 transitions. [2022-12-12 01:39:30,353 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5253549695740365 [2022-12-12 01:39:30,353 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1804 predicate places. [2022-12-12 01:39:30,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 1886 places, 639 transitions, 121389 flow [2022-12-12 01:39:30,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1874 places, 590 transitions, 111574 flow [2022-12-12 01:39:30,409 INFO L495 AbstractCegarLoop]: Abstraction has has 1874 places, 590 transitions, 111574 flow [2022-12-12 01:39:30,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:30,409 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:30,409 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:30,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-12-12 01:39:30,410 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2063364251, now seen corresponding path program 100 times [2022-12-12 01:39:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:30,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279067273] [2022-12-12 01:39:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279067273] [2022-12-12 01:39:30,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279067273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:30,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:30,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667036873] [2022-12-12 01:39:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:30,755 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:30,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1874 places, 590 transitions, 111574 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:30,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:30,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:30,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:32,790 INFO L130 PetriNetUnfolder]: 375/1221 cut-off events. [2022-12-12 01:39:32,791 INFO L131 PetriNetUnfolder]: For 337180/338028 co-relation queries the response was YES. [2022-12-12 01:39:32,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97299 conditions, 1221 events. 375/1221 cut-off events. For 337180/338028 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7959 event pairs, 47 based on Foata normal form. 21/1242 useless extension candidates. Maximal degree in co-relation 85503. Up to 917 conditions per place. [2022-12-12 01:39:32,821 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 436 selfloop transitions, 130 changer transitions 20/619 dead transitions. [2022-12-12 01:39:32,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1910 places, 619 transitions, 118564 flow [2022-12-12 01:39:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:39:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:39:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1697 transitions. [2022-12-12 01:39:32,822 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5271823547685617 [2022-12-12 01:39:32,823 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1828 predicate places. [2022-12-12 01:39:32,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 1910 places, 619 transitions, 118564 flow [2022-12-12 01:39:32,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1904 places, 599 transitions, 114512 flow [2022-12-12 01:39:32,879 INFO L495 AbstractCegarLoop]: Abstraction has has 1904 places, 599 transitions, 114512 flow [2022-12-12 01:39:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:32,879 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:32,881 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-12-12 01:39:32,881 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1866781539, now seen corresponding path program 101 times [2022-12-12 01:39:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:32,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357902702] [2022-12-12 01:39:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:33,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357902702] [2022-12-12 01:39:33,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357902702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:33,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:33,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:33,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628471393] [2022-12-12 01:39:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:33,223 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:33,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1904 places, 599 transitions, 114512 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:33,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:33,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:35,458 INFO L130 PetriNetUnfolder]: 372/1221 cut-off events. [2022-12-12 01:39:35,458 INFO L131 PetriNetUnfolder]: For 354764/355867 co-relation queries the response was YES. [2022-12-12 01:39:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98665 conditions, 1221 events. 372/1221 cut-off events. For 354764/355867 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8032 event pairs, 36 based on Foata normal form. 34/1255 useless extension candidates. Maximal degree in co-relation 86446. Up to 921 conditions per place. [2022-12-12 01:39:35,492 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 448 selfloop transitions, 121 changer transitions 21/623 dead transitions. [2022-12-12 01:39:35,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1941 places, 623 transitions, 120561 flow [2022-12-12 01:39:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:39:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:39:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1734 transitions. [2022-12-12 01:39:35,494 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5245009074410163 [2022-12-12 01:39:35,494 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1859 predicate places. [2022-12-12 01:39:35,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 1941 places, 623 transitions, 120561 flow [2022-12-12 01:39:35,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1934 places, 602 transitions, 116253 flow [2022-12-12 01:39:35,551 INFO L495 AbstractCegarLoop]: Abstraction has has 1934 places, 602 transitions, 116253 flow [2022-12-12 01:39:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:35,552 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:35,552 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-12-12 01:39:35,552 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1151514793, now seen corresponding path program 102 times [2022-12-12 01:39:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:35,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108896356] [2022-12-12 01:39:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:35,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108896356] [2022-12-12 01:39:35,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108896356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:39:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324951554] [2022-12-12 01:39:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:35,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:39:35,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:39:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:39:35,883 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:35,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1934 places, 602 transitions, 116253 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:35,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:35,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:38,040 INFO L130 PetriNetUnfolder]: 364/1194 cut-off events. [2022-12-12 01:39:38,041 INFO L131 PetriNetUnfolder]: For 345892/347037 co-relation queries the response was YES. [2022-12-12 01:39:38,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97454 conditions, 1194 events. 364/1194 cut-off events. For 345892/347037 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7719 event pairs, 46 based on Foata normal form. 32/1226 useless extension candidates. Maximal degree in co-relation 86363. Up to 900 conditions per place. [2022-12-12 01:39:38,073 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 462 selfloop transitions, 80 changer transitions 33/608 dead transitions. [2022-12-12 01:39:38,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1964 places, 608 transitions, 118633 flow [2022-12-12 01:39:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:39:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:39:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1420 transitions. [2022-12-12 01:39:38,075 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5265109380793475 [2022-12-12 01:39:38,075 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1882 predicate places. [2022-12-12 01:39:38,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 1964 places, 608 transitions, 118633 flow [2022-12-12 01:39:38,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1948 places, 575 transitions, 111826 flow [2022-12-12 01:39:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 1948 places, 575 transitions, 111826 flow [2022-12-12 01:39:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:39:38,133 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:38,133 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:38,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-12-12 01:39:38,133 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1759089155, now seen corresponding path program 103 times [2022-12-12 01:39:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:38,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31927678] [2022-12-12 01:39:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:38,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31927678] [2022-12-12 01:39:38,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31927678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:38,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:38,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413962944] [2022-12-12 01:39:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:38,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:38,427 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:38,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1948 places, 575 transitions, 111826 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:38,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:38,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:38,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:40,820 INFO L130 PetriNetUnfolder]: 357/1157 cut-off events. [2022-12-12 01:39:40,820 INFO L131 PetriNetUnfolder]: For 346584/347475 co-relation queries the response was YES. [2022-12-12 01:39:40,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95682 conditions, 1157 events. 357/1157 cut-off events. For 346584/347475 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7374 event pairs, 39 based on Foata normal form. 35/1191 useless extension candidates. Maximal degree in co-relation 89180. Up to 874 conditions per place. [2022-12-12 01:39:40,850 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 450 selfloop transitions, 56 changer transitions 43/582 dead transitions. [2022-12-12 01:39:40,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1978 places, 582 transitions, 114375 flow [2022-12-12 01:39:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:39:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:39:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1413 transitions. [2022-12-12 01:39:40,852 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5239154616240267 [2022-12-12 01:39:40,852 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1896 predicate places. [2022-12-12 01:39:40,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 1978 places, 582 transitions, 114375 flow [2022-12-12 01:39:40,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1782 places, 539 transitions, 105416 flow [2022-12-12 01:39:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 1782 places, 539 transitions, 105416 flow [2022-12-12 01:39:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:40,906 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:40,906 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:40,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-12-12 01:39:40,907 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -93999055, now seen corresponding path program 104 times [2022-12-12 01:39:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:40,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622981174] [2022-12-12 01:39:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:41,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622981174] [2022-12-12 01:39:41,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622981174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:41,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:41,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082333293] [2022-12-12 01:39:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:41,194 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:41,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1782 places, 539 transitions, 105416 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:41,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:41,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:41,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:43,204 INFO L130 PetriNetUnfolder]: 352/1130 cut-off events. [2022-12-12 01:39:43,204 INFO L131 PetriNetUnfolder]: For 341648/342512 co-relation queries the response was YES. [2022-12-12 01:39:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93869 conditions, 1130 events. 352/1130 cut-off events. For 341648/342512 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7124 event pairs, 46 based on Foata normal form. 31/1161 useless extension candidates. Maximal degree in co-relation 82361. Up to 848 conditions per place. [2022-12-12 01:39:43,235 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 369 selfloop transitions, 127 changer transitions 26/555 dead transitions. [2022-12-12 01:39:43,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1817 places, 555 transitions, 109806 flow [2022-12-12 01:39:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:39:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:39:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1648 transitions. [2022-12-12 01:39:43,236 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5261813537675607 [2022-12-12 01:39:43,236 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1735 predicate places. [2022-12-12 01:39:43,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 1817 places, 555 transitions, 109806 flow [2022-12-12 01:39:43,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1804 places, 529 transitions, 104325 flow [2022-12-12 01:39:43,290 INFO L495 AbstractCegarLoop]: Abstraction has has 1804 places, 529 transitions, 104325 flow [2022-12-12 01:39:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:43,290 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:43,290 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:43,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-12-12 01:39:43,290 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 881259795, now seen corresponding path program 105 times [2022-12-12 01:39:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:43,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521463675] [2022-12-12 01:39:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:43,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:43,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521463675] [2022-12-12 01:39:43,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521463675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:43,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:43,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055661778] [2022-12-12 01:39:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:43,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:43,617 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:43,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1804 places, 529 transitions, 104325 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:43,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:43,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:45,242 INFO L130 PetriNetUnfolder]: 345/1108 cut-off events. [2022-12-12 01:39:45,242 INFO L131 PetriNetUnfolder]: For 337456/338376 co-relation queries the response was YES. [2022-12-12 01:39:45,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93162 conditions, 1108 events. 345/1108 cut-off events. For 337456/338376 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6918 event pairs, 47 based on Foata normal form. 33/1141 useless extension candidates. Maximal degree in co-relation 81763. Up to 833 conditions per place. [2022-12-12 01:39:45,271 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 391 selfloop transitions, 101 changer transitions 17/542 dead transitions. [2022-12-12 01:39:45,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1836 places, 542 transitions, 108091 flow [2022-12-12 01:39:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:39:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:39:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1512 transitions. [2022-12-12 01:39:45,273 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2022-12-12 01:39:45,273 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1754 predicate places. [2022-12-12 01:39:45,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 1836 places, 542 transitions, 108091 flow [2022-12-12 01:39:45,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1828 places, 525 transitions, 104466 flow [2022-12-12 01:39:45,326 INFO L495 AbstractCegarLoop]: Abstraction has has 1828 places, 525 transitions, 104466 flow [2022-12-12 01:39:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:45,326 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:45,326 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:45,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-12-12 01:39:45,326 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1926171953, now seen corresponding path program 106 times [2022-12-12 01:39:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:45,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051420954] [2022-12-12 01:39:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:45,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051420954] [2022-12-12 01:39:45,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051420954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:45,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:45,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855349037] [2022-12-12 01:39:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:45,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:45,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:45,767 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:45,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1828 places, 525 transitions, 104466 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:45,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:45,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:45,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:47,692 INFO L130 PetriNetUnfolder]: 343/1098 cut-off events. [2022-12-12 01:39:47,692 INFO L131 PetriNetUnfolder]: For 332425/333327 co-relation queries the response was YES. [2022-12-12 01:39:47,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93497 conditions, 1098 events. 343/1098 cut-off events. For 332425/333327 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6830 event pairs, 47 based on Foata normal form. 23/1121 useless extension candidates. Maximal degree in co-relation 82207. Up to 828 conditions per place. [2022-12-12 01:39:47,722 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 387 selfloop transitions, 101 changer transitions 17/538 dead transitions. [2022-12-12 01:39:47,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1864 places, 538 transitions, 108250 flow [2022-12-12 01:39:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:39:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:39:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1680 transitions. [2022-12-12 01:39:47,724 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5219012115563839 [2022-12-12 01:39:47,724 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1782 predicate places. [2022-12-12 01:39:47,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 1864 places, 538 transitions, 108250 flow [2022-12-12 01:39:47,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1855 places, 521 transitions, 104591 flow [2022-12-12 01:39:47,780 INFO L495 AbstractCegarLoop]: Abstraction has has 1855 places, 521 transitions, 104591 flow [2022-12-12 01:39:47,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:47,780 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:47,780 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-12-12 01:39:47,780 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2043702065, now seen corresponding path program 107 times [2022-12-12 01:39:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:47,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393271922] [2022-12-12 01:39:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:48,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393271922] [2022-12-12 01:39:48,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393271922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:48,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:48,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798424979] [2022-12-12 01:39:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:48,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:48,088 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:48,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1855 places, 521 transitions, 104591 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:48,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:48,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:48,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:50,336 INFO L130 PetriNetUnfolder]: 342/1107 cut-off events. [2022-12-12 01:39:50,336 INFO L131 PetriNetUnfolder]: For 367313/368197 co-relation queries the response was YES. [2022-12-12 01:39:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94162 conditions, 1107 events. 342/1107 cut-off events. For 367313/368197 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6949 event pairs, 36 based on Foata normal form. 31/1137 useless extension candidates. Maximal degree in co-relation 82981. Up to 826 conditions per place. [2022-12-12 01:39:50,376 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 316 selfloop transitions, 162 changer transitions 26/537 dead transitions. [2022-12-12 01:39:50,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1895 places, 537 transitions, 109041 flow [2022-12-12 01:39:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 01:39:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 01:39:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1863 transitions. [2022-12-12 01:39:50,378 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5222876366694701 [2022-12-12 01:39:50,378 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1813 predicate places. [2022-12-12 01:39:50,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 1895 places, 537 transitions, 109041 flow [2022-12-12 01:39:50,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1881 places, 511 transitions, 103404 flow [2022-12-12 01:39:50,442 INFO L495 AbstractCegarLoop]: Abstraction has has 1881 places, 511 transitions, 103404 flow [2022-12-12 01:39:50,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:50,442 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:50,443 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:50,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-12-12 01:39:50,443 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1354938391, now seen corresponding path program 108 times [2022-12-12 01:39:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:50,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960552523] [2022-12-12 01:39:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:50,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960552523] [2022-12-12 01:39:50,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960552523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:50,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:50,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:39:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434889953] [2022-12-12 01:39:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:39:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:39:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:39:50,767 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:50,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1881 places, 511 transitions, 103404 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:50,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:50,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:52,584 INFO L130 PetriNetUnfolder]: 338/1094 cut-off events. [2022-12-12 01:39:52,584 INFO L131 PetriNetUnfolder]: For 362258/362920 co-relation queries the response was YES. [2022-12-12 01:39:52,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94150 conditions, 1094 events. 338/1094 cut-off events. For 362258/362920 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6803 event pairs, 52 based on Foata normal form. 21/1114 useless extension candidates. Maximal degree in co-relation 89850. Up to 818 conditions per place. [2022-12-12 01:39:52,615 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 338 selfloop transitions, 147 changer transitions 25/543 dead transitions. [2022-12-12 01:39:52,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1913 places, 543 transitions, 111342 flow [2022-12-12 01:39:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:39:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:39:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1513 transitions. [2022-12-12 01:39:52,616 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5269940787182167 [2022-12-12 01:39:52,617 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1831 predicate places. [2022-12-12 01:39:52,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 1913 places, 543 transitions, 111342 flow [2022-12-12 01:39:52,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1908 places, 518 transitions, 105886 flow [2022-12-12 01:39:52,670 INFO L495 AbstractCegarLoop]: Abstraction has has 1908 places, 518 transitions, 105886 flow [2022-12-12 01:39:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:39:52,670 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:52,670 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-12-12 01:39:52,670 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 136559335, now seen corresponding path program 109 times [2022-12-12 01:39:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:52,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509173001] [2022-12-12 01:39:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:53,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509173001] [2022-12-12 01:39:53,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509173001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:53,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:53,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78186936] [2022-12-12 01:39:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:53,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:53,014 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:53,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1908 places, 518 transitions, 105886 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:53,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:53,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:53,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:55,043 INFO L130 PetriNetUnfolder]: 335/1070 cut-off events. [2022-12-12 01:39:55,043 INFO L131 PetriNetUnfolder]: For 338411/339079 co-relation queries the response was YES. [2022-12-12 01:39:55,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93783 conditions, 1070 events. 335/1070 cut-off events. For 338411/339079 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6543 event pairs, 50 based on Foata normal form. 21/1090 useless extension candidates. Maximal degree in co-relation 83849. Up to 807 conditions per place. [2022-12-12 01:39:55,074 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 348 selfloop transitions, 147 changer transitions 16/544 dead transitions. [2022-12-12 01:39:55,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1944 places, 544 transitions, 112582 flow [2022-12-12 01:39:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:39:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:39:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1685 transitions. [2022-12-12 01:39:55,075 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5234544889717303 [2022-12-12 01:39:55,075 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1862 predicate places. [2022-12-12 01:39:55,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 1944 places, 544 transitions, 112582 flow [2022-12-12 01:39:55,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1939 places, 528 transitions, 109056 flow [2022-12-12 01:39:55,129 INFO L495 AbstractCegarLoop]: Abstraction has has 1939 places, 528 transitions, 109056 flow [2022-12-12 01:39:55,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:55,129 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:55,130 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-12-12 01:39:55,130 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -651087645, now seen corresponding path program 110 times [2022-12-12 01:39:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:55,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715096481] [2022-12-12 01:39:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715096481] [2022-12-12 01:39:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715096481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:55,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:55,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:39:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662505967] [2022-12-12 01:39:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:39:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:39:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:39:55,469 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:55,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1939 places, 528 transitions, 109056 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:55,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:55,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:57,418 INFO L130 PetriNetUnfolder]: 335/1073 cut-off events. [2022-12-12 01:39:57,419 INFO L131 PetriNetUnfolder]: For 338379/339053 co-relation queries the response was YES. [2022-12-12 01:39:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94745 conditions, 1073 events. 335/1073 cut-off events. For 338379/339053 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6578 event pairs, 36 based on Foata normal form. 21/1093 useless extension candidates. Maximal degree in co-relation 84836. Up to 808 conditions per place. [2022-12-12 01:39:57,450 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 309 selfloop transitions, 192 changer transitions 16/550 dead transitions. [2022-12-12 01:39:57,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1976 places, 550 transitions, 114936 flow [2022-12-12 01:39:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:39:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:39:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1731 transitions. [2022-12-12 01:39:57,452 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5235934664246824 [2022-12-12 01:39:57,452 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1894 predicate places. [2022-12-12 01:39:57,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 1976 places, 550 transitions, 114936 flow [2022-12-12 01:39:57,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1971 places, 534 transitions, 111378 flow [2022-12-12 01:39:57,511 INFO L495 AbstractCegarLoop]: Abstraction has has 1971 places, 534 transitions, 111378 flow [2022-12-12 01:39:57,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:39:57,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:57,512 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:57,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-12-12 01:39:57,512 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 455212507, now seen corresponding path program 111 times [2022-12-12 01:39:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:57,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455304503] [2022-12-12 01:39:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:57,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455304503] [2022-12-12 01:39:57,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455304503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:39:57,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:39:57,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:39:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435620004] [2022-12-12 01:39:57,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:39:57,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:39:57,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:57,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:39:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:39:57,849 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:39:57,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1971 places, 534 transitions, 111378 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:39:57,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:57,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:39:57,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:00,004 INFO L130 PetriNetUnfolder]: 335/1065 cut-off events. [2022-12-12 01:40:00,004 INFO L131 PetriNetUnfolder]: For 338066/338762 co-relation queries the response was YES. [2022-12-12 01:40:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95142 conditions, 1065 events. 335/1065 cut-off events. For 338066/338762 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6484 event pairs, 34 based on Foata normal form. 31/1095 useless extension candidates. Maximal degree in co-relation 85375. Up to 804 conditions per place. [2022-12-12 01:40:00,037 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 351 selfloop transitions, 153 changer transitions 15/552 dead transitions. [2022-12-12 01:40:00,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2008 places, 552 transitions, 116418 flow [2022-12-12 01:40:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:40:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:40:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1727 transitions. [2022-12-12 01:40:00,039 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5223835450695705 [2022-12-12 01:40:00,039 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1926 predicate places. [2022-12-12 01:40:00,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 2008 places, 552 transitions, 116418 flow [2022-12-12 01:40:00,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2003 places, 537 transitions, 113052 flow [2022-12-12 01:40:00,094 INFO L495 AbstractCegarLoop]: Abstraction has has 2003 places, 537 transitions, 113052 flow [2022-12-12 01:40:00,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:00,095 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:00,095 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-12-12 01:40:00,095 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1928007913, now seen corresponding path program 112 times [2022-12-12 01:40:00,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:00,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333779571] [2022-12-12 01:40:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:00,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333779571] [2022-12-12 01:40:00,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333779571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:00,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:00,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813303258] [2022-12-12 01:40:00,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:00,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:00,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:00,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:00,480 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:00,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2003 places, 537 transitions, 113052 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:00,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:00,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:00,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:02,509 INFO L130 PetriNetUnfolder]: 345/1099 cut-off events. [2022-12-12 01:40:02,509 INFO L131 PetriNetUnfolder]: For 370502/371474 co-relation queries the response was YES. [2022-12-12 01:40:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98492 conditions, 1099 events. 345/1099 cut-off events. For 370502/371474 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6794 event pairs, 35 based on Foata normal form. 33/1131 useless extension candidates. Maximal degree in co-relation 87383. Up to 826 conditions per place. [2022-12-12 01:40:02,542 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 343 selfloop transitions, 177 changer transitions 20/573 dead transitions. [2022-12-12 01:40:02,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2041 places, 573 transitions, 122223 flow [2022-12-12 01:40:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:40:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:40:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1777 transitions. [2022-12-12 01:40:02,544 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5237253168287651 [2022-12-12 01:40:02,544 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1959 predicate places. [2022-12-12 01:40:02,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 2041 places, 573 transitions, 122223 flow [2022-12-12 01:40:02,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2035 places, 553 transitions, 117688 flow [2022-12-12 01:40:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 2035 places, 553 transitions, 117688 flow [2022-12-12 01:40:02,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:02,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:02,604 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:02,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-12-12 01:40:02,604 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -478813163, now seen corresponding path program 113 times [2022-12-12 01:40:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859391834] [2022-12-12 01:40:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:02,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859391834] [2022-12-12 01:40:02,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859391834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:02,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:02,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062199963] [2022-12-12 01:40:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:02,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:02,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:02,925 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:02,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2035 places, 553 transitions, 117688 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:02,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:02,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:02,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:05,081 INFO L130 PetriNetUnfolder]: 342/1096 cut-off events. [2022-12-12 01:40:05,081 INFO L131 PetriNetUnfolder]: For 370082/371038 co-relation queries the response was YES. [2022-12-12 01:40:05,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98792 conditions, 1096 events. 342/1096 cut-off events. For 370082/371038 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6738 event pairs, 42 based on Foata normal form. 33/1128 useless extension candidates. Maximal degree in co-relation 87817. Up to 821 conditions per place. [2022-12-12 01:40:05,114 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 414 selfloop transitions, 102 changer transitions 20/569 dead transitions. [2022-12-12 01:40:05,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2070 places, 569 transitions, 122388 flow [2022-12-12 01:40:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:40:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:40:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1636 transitions. [2022-12-12 01:40:05,116 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5223499361430396 [2022-12-12 01:40:05,116 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1988 predicate places. [2022-12-12 01:40:05,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 2070 places, 569 transitions, 122388 flow [2022-12-12 01:40:05,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2063 places, 549 transitions, 117813 flow [2022-12-12 01:40:05,175 INFO L495 AbstractCegarLoop]: Abstraction has has 2063 places, 549 transitions, 117813 flow [2022-12-12 01:40:05,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:05,175 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:05,176 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:05,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-12-12 01:40:05,176 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1785447401, now seen corresponding path program 114 times [2022-12-12 01:40:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:05,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068549389] [2022-12-12 01:40:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:05,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068549389] [2022-12-12 01:40:05,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068549389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:05,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:05,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825713817] [2022-12-12 01:40:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:05,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:05,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:05,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2063 places, 549 transitions, 117813 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:05,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:05,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:05,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:07,517 INFO L130 PetriNetUnfolder]: 337/1084 cut-off events. [2022-12-12 01:40:07,517 INFO L131 PetriNetUnfolder]: For 370481/371249 co-relation queries the response was YES. [2022-12-12 01:40:07,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98844 conditions, 1084 events. 337/1084 cut-off events. For 370481/371249 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6678 event pairs, 33 based on Foata normal form. 37/1121 useless extension candidates. Maximal degree in co-relation 88238. Up to 814 conditions per place. [2022-12-12 01:40:07,551 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 352 selfloop transitions, 159 changer transitions 19/563 dead transitions. [2022-12-12 01:40:07,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2098 places, 563 transitions, 122071 flow [2022-12-12 01:40:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:40:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:40:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1644 transitions. [2022-12-12 01:40:07,553 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.524904214559387 [2022-12-12 01:40:07,553 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2016 predicate places. [2022-12-12 01:40:07,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 2098 places, 563 transitions, 122071 flow [2022-12-12 01:40:07,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2093 places, 544 transitions, 117695 flow [2022-12-12 01:40:07,615 INFO L495 AbstractCegarLoop]: Abstraction has has 2093 places, 544 transitions, 117695 flow [2022-12-12 01:40:07,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:07,615 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:07,615 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:07,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-12-12 01:40:07,615 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash 831661333, now seen corresponding path program 115 times [2022-12-12 01:40:07,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:07,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642359885] [2022-12-12 01:40:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:07,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642359885] [2022-12-12 01:40:07,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642359885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:07,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:07,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008065210] [2022-12-12 01:40:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:07,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:07,912 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:07,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2093 places, 544 transitions, 117695 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:07,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:07,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:07,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:09,751 INFO L130 PetriNetUnfolder]: 329/1063 cut-off events. [2022-12-12 01:40:09,751 INFO L131 PetriNetUnfolder]: For 369452/370172 co-relation queries the response was YES. [2022-12-12 01:40:09,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98069 conditions, 1063 events. 329/1063 cut-off events. For 369452/370172 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6496 event pairs, 43 based on Foata normal form. 31/1093 useless extension candidates. Maximal degree in co-relation 87607. Up to 800 conditions per place. [2022-12-12 01:40:09,780 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 344 selfloop transitions, 122 changer transitions 52/551 dead transitions. [2022-12-12 01:40:09,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2127 places, 551 transitions, 120347 flow [2022-12-12 01:40:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:40:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:40:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1597 transitions. [2022-12-12 01:40:09,782 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5244663382594417 [2022-12-12 01:40:09,782 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2045 predicate places. [2022-12-12 01:40:09,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 2127 places, 551 transitions, 120347 flow [2022-12-12 01:40:09,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2119 places, 499 transitions, 108265 flow [2022-12-12 01:40:09,835 INFO L495 AbstractCegarLoop]: Abstraction has has 2119 places, 499 transitions, 108265 flow [2022-12-12 01:40:09,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:09,835 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:09,835 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:09,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-12-12 01:40:09,835 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash 798054127, now seen corresponding path program 116 times [2022-12-12 01:40:09,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:09,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102449507] [2022-12-12 01:40:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:09,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102449507] [2022-12-12 01:40:10,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102449507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:10,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:10,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085172251] [2022-12-12 01:40:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:10,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:10,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:10,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:10,235 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:10,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2119 places, 499 transitions, 108265 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:10,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:10,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:10,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:11,832 INFO L130 PetriNetUnfolder]: 316/1026 cut-off events. [2022-12-12 01:40:11,832 INFO L131 PetriNetUnfolder]: For 355145/355871 co-relation queries the response was YES. [2022-12-12 01:40:11,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95276 conditions, 1026 events. 316/1026 cut-off events. For 355145/355871 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6186 event pairs, 53 based on Foata normal form. 31/1056 useless extension candidates. Maximal degree in co-relation 85436. Up to 769 conditions per place. [2022-12-12 01:40:11,972 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 344 selfloop transitions, 130 changer transitions 18/525 dead transitions. [2022-12-12 01:40:11,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2152 places, 525 transitions, 115287 flow [2022-12-12 01:40:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:40:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:40:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1556 transitions. [2022-12-12 01:40:11,974 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5260311020960108 [2022-12-12 01:40:11,974 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2070 predicate places. [2022-12-12 01:40:11,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 2152 places, 525 transitions, 115287 flow [2022-12-12 01:40:12,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2147 places, 507 transitions, 111069 flow [2022-12-12 01:40:12,029 INFO L495 AbstractCegarLoop]: Abstraction has has 2147 places, 507 transitions, 111069 flow [2022-12-12 01:40:12,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:12,029 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:12,029 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:12,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-12-12 01:40:12,029 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash -23693729, now seen corresponding path program 117 times [2022-12-12 01:40:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:12,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354417763] [2022-12-12 01:40:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:12,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:12,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354417763] [2022-12-12 01:40:12,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354417763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:12,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:12,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131216155] [2022-12-12 01:40:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:12,499 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:12,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2147 places, 507 transitions, 111069 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:12,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:12,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:14,352 INFO L130 PetriNetUnfolder]: 317/1013 cut-off events. [2022-12-12 01:40:14,353 INFO L131 PetriNetUnfolder]: For 354227/354959 co-relation queries the response was YES. [2022-12-12 01:40:14,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95489 conditions, 1013 events. 317/1013 cut-off events. For 354227/354959 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6007 event pairs, 43 based on Foata normal form. 31/1044 useless extension candidates. Maximal degree in co-relation 85451. Up to 764 conditions per place. [2022-12-12 01:40:14,384 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 367 selfloop transitions, 111 changer transitions 16/527 dead transitions. [2022-12-12 01:40:14,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2187 places, 527 transitions, 116752 flow [2022-12-12 01:40:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 01:40:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 01:40:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1851 transitions. [2022-12-12 01:40:14,385 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5189234650967199 [2022-12-12 01:40:14,386 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2105 predicate places. [2022-12-12 01:40:14,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 2187 places, 527 transitions, 116752 flow [2022-12-12 01:40:14,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2180 places, 511 transitions, 112964 flow [2022-12-12 01:40:14,442 INFO L495 AbstractCegarLoop]: Abstraction has has 2180 places, 511 transitions, 112964 flow [2022-12-12 01:40:14,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:14,442 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:14,442 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:14,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-12-12 01:40:14,442 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -194341139, now seen corresponding path program 118 times [2022-12-12 01:40:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:14,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984345398] [2022-12-12 01:40:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:14,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984345398] [2022-12-12 01:40:14,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984345398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:14,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:14,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26565982] [2022-12-12 01:40:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:14,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:14,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:14,758 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:14,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2180 places, 511 transitions, 112964 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:14,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:14,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:14,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:16,639 INFO L130 PetriNetUnfolder]: 314/1013 cut-off events. [2022-12-12 01:40:16,639 INFO L131 PetriNetUnfolder]: For 353123/353627 co-relation queries the response was YES. [2022-12-12 01:40:16,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95941 conditions, 1013 events. 314/1013 cut-off events. For 353123/353627 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6046 event pairs, 43 based on Foata normal form. 31/1044 useless extension candidates. Maximal degree in co-relation 86060. Up to 761 conditions per place. [2022-12-12 01:40:16,671 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 377 selfloop transitions, 79 changer transitions 36/525 dead transitions. [2022-12-12 01:40:16,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2215 places, 525 transitions, 117261 flow [2022-12-12 01:40:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:40:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:40:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1630 transitions. [2022-12-12 01:40:16,673 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.520434227330779 [2022-12-12 01:40:16,673 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2133 predicate places. [2022-12-12 01:40:16,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 2215 places, 525 transitions, 117261 flow [2022-12-12 01:40:16,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2201 places, 489 transitions, 108681 flow [2022-12-12 01:40:16,727 INFO L495 AbstractCegarLoop]: Abstraction has has 2201 places, 489 transitions, 108681 flow [2022-12-12 01:40:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:16,728 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:16,728 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-12-12 01:40:16,728 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1093259755, now seen corresponding path program 119 times [2022-12-12 01:40:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714810882] [2022-12-12 01:40:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:16,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:17,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:17,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714810882] [2022-12-12 01:40:17,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714810882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:17,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:17,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:17,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012753492] [2022-12-12 01:40:17,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:17,106 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:17,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2201 places, 489 transitions, 108681 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:17,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:17,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:18,964 INFO L130 PetriNetUnfolder]: 309/989 cut-off events. [2022-12-12 01:40:18,964 INFO L131 PetriNetUnfolder]: For 359090/359834 co-relation queries the response was YES. [2022-12-12 01:40:18,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94460 conditions, 989 events. 309/989 cut-off events. For 359090/359834 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5816 event pairs, 51 based on Foata normal form. 31/1019 useless extension candidates. Maximal degree in co-relation 86966. Up to 742 conditions per place. [2022-12-12 01:40:18,995 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 327 selfloop transitions, 108 changer transitions 37/505 dead transitions. [2022-12-12 01:40:18,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2238 places, 505 transitions, 113442 flow [2022-12-12 01:40:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:40:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:40:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1727 transitions. [2022-12-12 01:40:18,996 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5223835450695705 [2022-12-12 01:40:18,996 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2156 predicate places. [2022-12-12 01:40:18,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 2238 places, 505 transitions, 113442 flow [2022-12-12 01:40:19,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2227 places, 468 transitions, 104550 flow [2022-12-12 01:40:19,047 INFO L495 AbstractCegarLoop]: Abstraction has has 2227 places, 468 transitions, 104550 flow [2022-12-12 01:40:19,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:19,048 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:19,048 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:19,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-12-12 01:40:19,048 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1558888747, now seen corresponding path program 120 times [2022-12-12 01:40:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:19,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137948406] [2022-12-12 01:40:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137948406] [2022-12-12 01:40:19,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137948406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:19,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:19,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:19,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787192915] [2022-12-12 01:40:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:19,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:19,382 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:19,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2227 places, 468 transitions, 104550 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:19,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:19,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:19,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:21,244 INFO L130 PetriNetUnfolder]: 295/944 cut-off events. [2022-12-12 01:40:21,245 INFO L131 PetriNetUnfolder]: For 342970/343962 co-relation queries the response was YES. [2022-12-12 01:40:21,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91117 conditions, 944 events. 295/944 cut-off events. For 342970/343962 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5386 event pairs, 54 based on Foata normal form. 31/974 useless extension candidates. Maximal degree in co-relation 81807. Up to 708 conditions per place. [2022-12-12 01:40:21,276 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 346 selfloop transitions, 75 changer transitions 21/475 dead transitions. [2022-12-12 01:40:21,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2264 places, 475 transitions, 107120 flow [2022-12-12 01:40:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:40:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:40:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1715 transitions. [2022-12-12 01:40:21,277 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5187537810042347 [2022-12-12 01:40:21,277 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2182 predicate places. [2022-12-12 01:40:21,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 2264 places, 475 transitions, 107120 flow [2022-12-12 01:40:21,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2225 places, 454 transitions, 102029 flow [2022-12-12 01:40:21,326 INFO L495 AbstractCegarLoop]: Abstraction has has 2225 places, 454 transitions, 102029 flow [2022-12-12 01:40:21,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:21,327 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:21,327 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:21,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-12-12 01:40:21,327 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash 360045877, now seen corresponding path program 121 times [2022-12-12 01:40:21,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:21,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633630598] [2022-12-12 01:40:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:21,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633630598] [2022-12-12 01:40:21,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633630598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:21,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:21,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177058822] [2022-12-12 01:40:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:21,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:21,619 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:21,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2225 places, 454 transitions, 102029 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:21,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:21,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:21,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:23,275 INFO L130 PetriNetUnfolder]: 296/942 cut-off events. [2022-12-12 01:40:23,275 INFO L131 PetriNetUnfolder]: For 356168/357164 co-relation queries the response was YES. [2022-12-12 01:40:23,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91504 conditions, 942 events. 296/942 cut-off events. For 356168/357164 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5387 event pairs, 37 based on Foata normal form. 31/972 useless extension candidates. Maximal degree in co-relation 81871. Up to 705 conditions per place. [2022-12-12 01:40:23,305 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 309 selfloop transitions, 80 changer transitions 49/471 dead transitions. [2022-12-12 01:40:23,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2261 places, 471 transitions, 107031 flow [2022-12-12 01:40:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:40:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:40:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1681 transitions. [2022-12-12 01:40:23,306 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5222118670394532 [2022-12-12 01:40:23,307 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2179 predicate places. [2022-12-12 01:40:23,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 2261 places, 471 transitions, 107031 flow [2022-12-12 01:40:23,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2239 places, 422 transitions, 95057 flow [2022-12-12 01:40:23,355 INFO L495 AbstractCegarLoop]: Abstraction has has 2239 places, 422 transitions, 95057 flow [2022-12-12 01:40:23,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:23,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:23,355 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-12-12 01:40:23,356 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 681030591, now seen corresponding path program 122 times [2022-12-12 01:40:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:23,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460009523] [2022-12-12 01:40:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:23,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:23,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460009523] [2022-12-12 01:40:23,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460009523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:23,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:23,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190723471] [2022-12-12 01:40:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:23,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:23,738 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:23,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2239 places, 422 transitions, 95057 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:23,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:23,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:23,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:25,286 INFO L130 PetriNetUnfolder]: 285/889 cut-off events. [2022-12-12 01:40:25,286 INFO L131 PetriNetUnfolder]: For 332942/334014 co-relation queries the response was YES. [2022-12-12 01:40:25,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87927 conditions, 889 events. 285/889 cut-off events. For 332942/334014 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4899 event pairs, 51 based on Foata normal form. 27/916 useless extension candidates. Maximal degree in co-relation 78716. Up to 670 conditions per place. [2022-12-12 01:40:25,313 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 235 selfloop transitions, 124 changer transitions 46/438 dead transitions. [2022-12-12 01:40:25,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2280 places, 438 transitions, 99783 flow [2022-12-12 01:40:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 01:40:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 01:40:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1902 transitions. [2022-12-12 01:40:25,314 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5205254515599343 [2022-12-12 01:40:25,314 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2198 predicate places. [2022-12-12 01:40:25,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 2280 places, 438 transitions, 99783 flow [2022-12-12 01:40:25,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2266 places, 392 transitions, 88446 flow [2022-12-12 01:40:25,458 INFO L495 AbstractCegarLoop]: Abstraction has has 2266 places, 392 transitions, 88446 flow [2022-12-12 01:40:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:25,458 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:25,458 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:25,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-12-12 01:40:25,458 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash -625277395, now seen corresponding path program 123 times [2022-12-12 01:40:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:25,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523818742] [2022-12-12 01:40:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:25,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523818742] [2022-12-12 01:40:25,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523818742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:25,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:25,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:25,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335236306] [2022-12-12 01:40:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:25,770 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:25,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2266 places, 392 transitions, 88446 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:25,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:25,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:25,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:27,223 INFO L130 PetriNetUnfolder]: 268/831 cut-off events. [2022-12-12 01:40:27,223 INFO L131 PetriNetUnfolder]: For 313710/314480 co-relation queries the response was YES. [2022-12-12 01:40:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83042 conditions, 831 events. 268/831 cut-off events. For 313710/314480 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4397 event pairs, 48 based on Foata normal form. 31/862 useless extension candidates. Maximal degree in co-relation 75010. Up to 625 conditions per place. [2022-12-12 01:40:27,249 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 277 selfloop transitions, 70 changer transitions 18/398 dead transitions. [2022-12-12 01:40:27,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2298 places, 398 transitions, 90658 flow [2022-12-12 01:40:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:40:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:40:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1496 transitions. [2022-12-12 01:40:27,250 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5210727969348659 [2022-12-12 01:40:27,250 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2216 predicate places. [2022-12-12 01:40:27,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 2298 places, 398 transitions, 90658 flow [2022-12-12 01:40:27,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2281 places, 380 transitions, 86185 flow [2022-12-12 01:40:27,398 INFO L495 AbstractCegarLoop]: Abstraction has has 2281 places, 380 transitions, 86185 flow [2022-12-12 01:40:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:27,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:27,398 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:27,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-12-12 01:40:27,398 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash -93165343, now seen corresponding path program 124 times [2022-12-12 01:40:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:27,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016447524] [2022-12-12 01:40:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:27,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:27,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016447524] [2022-12-12 01:40:27,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016447524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:27,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:27,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867345465] [2022-12-12 01:40:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:27,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:27,696 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:27,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2281 places, 380 transitions, 86185 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:27,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:27,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:27,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:29,162 INFO L130 PetriNetUnfolder]: 264/812 cut-off events. [2022-12-12 01:40:29,163 INFO L131 PetriNetUnfolder]: For 310925/311453 co-relation queries the response was YES. [2022-12-12 01:40:29,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82202 conditions, 812 events. 264/812 cut-off events. For 310925/311453 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4270 event pairs, 51 based on Foata normal form. 31/843 useless extension candidates. Maximal degree in co-relation 74359. Up to 613 conditions per place. [2022-12-12 01:40:29,287 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 262 selfloop transitions, 71 changer transitions 21/387 dead transitions. [2022-12-12 01:40:29,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2315 places, 387 transitions, 88635 flow [2022-12-12 01:40:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:40:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:40:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1586 transitions. [2022-12-12 01:40:29,289 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5208538587848933 [2022-12-12 01:40:29,289 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2233 predicate places. [2022-12-12 01:40:29,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 2315 places, 387 transitions, 88635 flow [2022-12-12 01:40:29,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2290 places, 366 transitions, 83376 flow [2022-12-12 01:40:29,332 INFO L495 AbstractCegarLoop]: Abstraction has has 2290 places, 366 transitions, 83376 flow [2022-12-12 01:40:29,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:29,332 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:29,332 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-12-12 01:40:29,332 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 718914165, now seen corresponding path program 125 times [2022-12-12 01:40:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:29,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077618259] [2022-12-12 01:40:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:29,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077618259] [2022-12-12 01:40:29,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077618259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:29,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:29,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905960687] [2022-12-12 01:40:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:29,661 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:29,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2290 places, 366 transitions, 83376 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:29,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:29,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:29,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:31,184 INFO L130 PetriNetUnfolder]: 259/791 cut-off events. [2022-12-12 01:40:31,184 INFO L131 PetriNetUnfolder]: For 299963/300751 co-relation queries the response was YES. [2022-12-12 01:40:31,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80836 conditions, 791 events. 259/791 cut-off events. For 299963/300751 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4097 event pairs, 37 based on Foata normal form. 31/822 useless extension candidates. Maximal degree in co-relation 73186. Up to 597 conditions per place. [2022-12-12 01:40:31,209 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 249 selfloop transitions, 63 changer transitions 27/372 dead transitions. [2022-12-12 01:40:31,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2322 places, 372 transitions, 85560 flow [2022-12-12 01:40:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:40:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:40:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1497 transitions. [2022-12-12 01:40:31,210 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5214211076280042 [2022-12-12 01:40:31,210 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2240 predicate places. [2022-12-12 01:40:31,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 2322 places, 372 transitions, 85560 flow [2022-12-12 01:40:31,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2218 places, 345 transitions, 78747 flow [2022-12-12 01:40:31,357 INFO L495 AbstractCegarLoop]: Abstraction has has 2218 places, 345 transitions, 78747 flow [2022-12-12 01:40:31,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:31,357 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:31,357 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-12-12 01:40:31,357 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 14517433, now seen corresponding path program 126 times [2022-12-12 01:40:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:31,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961133529] [2022-12-12 01:40:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:31,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961133529] [2022-12-12 01:40:31,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961133529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:31,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:31,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808323828] [2022-12-12 01:40:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:31,674 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:31,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2218 places, 345 transitions, 78747 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:31,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:31,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:31,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:33,007 INFO L130 PetriNetUnfolder]: 253/772 cut-off events. [2022-12-12 01:40:33,007 INFO L131 PetriNetUnfolder]: For 304768/305814 co-relation queries the response was YES. [2022-12-12 01:40:33,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78937 conditions, 772 events. 253/772 cut-off events. For 304768/305814 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3935 event pairs, 53 based on Foata normal form. 33/804 useless extension candidates. Maximal degree in co-relation 71227. Up to 577 conditions per place. [2022-12-12 01:40:33,032 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 244 selfloop transitions, 55 changer transitions 20/352 dead transitions. [2022-12-12 01:40:33,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2248 places, 352 transitions, 81158 flow [2022-12-12 01:40:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:40:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:40:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1403 transitions. [2022-12-12 01:40:33,034 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5202076381164257 [2022-12-12 01:40:33,034 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2166 predicate places. [2022-12-12 01:40:33,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 2248 places, 352 transitions, 81158 flow [2022-12-12 01:40:33,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2116 places, 332 transitions, 76066 flow [2022-12-12 01:40:33,087 INFO L495 AbstractCegarLoop]: Abstraction has has 2116 places, 332 transitions, 76066 flow [2022-12-12 01:40:33,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:33,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:33,087 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:33,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-12-12 01:40:33,087 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2001112525, now seen corresponding path program 127 times [2022-12-12 01:40:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:33,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623984118] [2022-12-12 01:40:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:33,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:33,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623984118] [2022-12-12 01:40:33,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623984118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:33,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:33,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977113853] [2022-12-12 01:40:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:33,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:33,531 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:33,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2116 places, 332 transitions, 76066 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:33,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:33,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:33,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:35,015 INFO L130 PetriNetUnfolder]: 252/756 cut-off events. [2022-12-12 01:40:35,016 INFO L131 PetriNetUnfolder]: For 309554/310346 co-relation queries the response was YES. [2022-12-12 01:40:35,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78397 conditions, 756 events. 252/756 cut-off events. For 309554/310346 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3784 event pairs, 53 based on Foata normal form. 31/786 useless extension candidates. Maximal degree in co-relation 73356. Up to 568 conditions per place. [2022-12-12 01:40:35,040 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 192 selfloop transitions, 81 changer transitions 37/343 dead transitions. [2022-12-12 01:40:35,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2154 places, 343 transitions, 79486 flow [2022-12-12 01:40:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:40:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:40:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1759 transitions. [2022-12-12 01:40:35,041 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5184202770409667 [2022-12-12 01:40:35,041 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2072 predicate places. [2022-12-12 01:40:35,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 2154 places, 343 transitions, 79486 flow [2022-12-12 01:40:35,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2142 places, 306 transitions, 70002 flow [2022-12-12 01:40:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 2142 places, 306 transitions, 70002 flow [2022-12-12 01:40:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:35,080 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:35,080 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-12-12 01:40:35,081 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -545532425, now seen corresponding path program 128 times [2022-12-12 01:40:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:35,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444928785] [2022-12-12 01:40:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:35,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444928785] [2022-12-12 01:40:35,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444928785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:35,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:35,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464395736] [2022-12-12 01:40:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:35,469 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:35,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2142 places, 306 transitions, 70002 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:35,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:35,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:36,907 INFO L130 PetriNetUnfolder]: 245/742 cut-off events. [2022-12-12 01:40:36,907 INFO L131 PetriNetUnfolder]: For 318586/319766 co-relation queries the response was YES. [2022-12-12 01:40:36,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77075 conditions, 742 events. 245/742 cut-off events. For 318586/319766 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3726 event pairs, 37 based on Foata normal form. 33/774 useless extension candidates. Maximal degree in co-relation 69247. Up to 553 conditions per place. [2022-12-12 01:40:36,931 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 183 selfloop transitions, 97 changer transitions 15/328 dead transitions. [2022-12-12 01:40:36,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2179 places, 328 transitions, 76242 flow [2022-12-12 01:40:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:40:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:40:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1721 transitions. [2022-12-12 01:40:36,933 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5205686630369026 [2022-12-12 01:40:36,933 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2097 predicate places. [2022-12-12 01:40:36,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 2179 places, 328 transitions, 76242 flow [2022-12-12 01:40:36,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2173 places, 313 transitions, 72360 flow [2022-12-12 01:40:36,971 INFO L495 AbstractCegarLoop]: Abstraction has has 2173 places, 313 transitions, 72360 flow [2022-12-12 01:40:36,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:36,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:36,971 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:36,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-12-12 01:40:36,972 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash -167663539, now seen corresponding path program 129 times [2022-12-12 01:40:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:36,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9910464] [2022-12-12 01:40:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:36,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:37,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9910464] [2022-12-12 01:40:37,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9910464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:37,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:37,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24637358] [2022-12-12 01:40:37,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:37,304 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:37,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2173 places, 313 transitions, 72360 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:37,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:37,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:37,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:38,762 INFO L130 PetriNetUnfolder]: 244/741 cut-off events. [2022-12-12 01:40:38,763 INFO L131 PetriNetUnfolder]: For 323625/324815 co-relation queries the response was YES. [2022-12-12 01:40:38,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77541 conditions, 741 events. 244/741 cut-off events. For 323625/324815 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3723 event pairs, 52 based on Foata normal form. 33/774 useless extension candidates. Maximal degree in co-relation 69651. Up to 552 conditions per place. [2022-12-12 01:40:38,787 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 176 selfloop transitions, 103 changer transitions 15/327 dead transitions. [2022-12-12 01:40:38,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2211 places, 327 transitions, 76572 flow [2022-12-12 01:40:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:40:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:40:38,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1762 transitions. [2022-12-12 01:40:38,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5193044503389331 [2022-12-12 01:40:38,789 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2129 predicate places. [2022-12-12 01:40:38,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 2211 places, 327 transitions, 76572 flow [2022-12-12 01:40:38,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2204 places, 312 transitions, 72660 flow [2022-12-12 01:40:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 2204 places, 312 transitions, 72660 flow [2022-12-12 01:40:38,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:38,828 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:38,828 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:38,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-12-12 01:40:38,828 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1246212977, now seen corresponding path program 130 times [2022-12-12 01:40:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:38,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704676103] [2022-12-12 01:40:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:39,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704676103] [2022-12-12 01:40:39,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704676103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:39,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165316645] [2022-12-12 01:40:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:39,158 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:39,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2204 places, 312 transitions, 72660 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:39,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:39,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:40,479 INFO L130 PetriNetUnfolder]: 239/722 cut-off events. [2022-12-12 01:40:40,480 INFO L131 PetriNetUnfolder]: For 315635/316447 co-relation queries the response was YES. [2022-12-12 01:40:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76685 conditions, 722 events. 239/722 cut-off events. For 315635/316447 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3553 event pairs, 51 based on Foata normal form. 31/753 useless extension candidates. Maximal degree in co-relation 69265. Up to 541 conditions per place. [2022-12-12 01:40:40,625 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 183 selfloop transitions, 67 changer transitions 35/318 dead transitions. [2022-12-12 01:40:40,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2238 places, 318 transitions, 74796 flow [2022-12-12 01:40:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:40:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:40:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1582 transitions. [2022-12-12 01:40:40,626 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5195402298850574 [2022-12-12 01:40:40,626 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2156 predicate places. [2022-12-12 01:40:40,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 2238 places, 318 transitions, 74796 flow [2022-12-12 01:40:40,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2215 places, 283 transitions, 65614 flow [2022-12-12 01:40:40,663 INFO L495 AbstractCegarLoop]: Abstraction has has 2215 places, 283 transitions, 65614 flow [2022-12-12 01:40:40,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:40,663 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:40,664 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:40,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-12-12 01:40:40,664 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 715036979, now seen corresponding path program 131 times [2022-12-12 01:40:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845615411] [2022-12-12 01:40:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845615411] [2022-12-12 01:40:41,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845615411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:41,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:41,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606144150] [2022-12-12 01:40:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:41,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:41,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:41,052 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:41,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2215 places, 283 transitions, 65614 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:41,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:41,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:41,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:42,198 INFO L130 PetriNetUnfolder]: 229/681 cut-off events. [2022-12-12 01:40:42,198 INFO L131 PetriNetUnfolder]: For 302936/303756 co-relation queries the response was YES. [2022-12-12 01:40:42,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73296 conditions, 681 events. 229/681 cut-off events. For 302936/303756 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3238 event pairs, 36 based on Foata normal form. 31/712 useless extension candidates. Maximal degree in co-relation 68099. Up to 511 conditions per place. [2022-12-12 01:40:42,222 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 168 selfloop transitions, 71 changer transitions 18/290 dead transitions. [2022-12-12 01:40:42,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2247 places, 290 transitions, 67968 flow [2022-12-12 01:40:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:40:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:40:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1497 transitions. [2022-12-12 01:40:42,223 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5214211076280042 [2022-12-12 01:40:42,223 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2165 predicate places. [2022-12-12 01:40:42,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 2247 places, 290 transitions, 67968 flow [2022-12-12 01:40:42,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2231 places, 272 transitions, 63207 flow [2022-12-12 01:40:42,258 INFO L495 AbstractCegarLoop]: Abstraction has has 2231 places, 272 transitions, 63207 flow [2022-12-12 01:40:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:42,259 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:42,259 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:42,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-12-12 01:40:42,259 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1492489879, now seen corresponding path program 132 times [2022-12-12 01:40:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:42,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971355282] [2022-12-12 01:40:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:42,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:42,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971355282] [2022-12-12 01:40:42,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971355282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:42,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:42,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:40:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843260733] [2022-12-12 01:40:42,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:42,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:40:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:40:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:40:42,534 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:42,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2231 places, 272 transitions, 63207 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:42,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:42,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:43,669 INFO L130 PetriNetUnfolder]: 224/663 cut-off events. [2022-12-12 01:40:43,669 INFO L131 PetriNetUnfolder]: For 298655/299483 co-relation queries the response was YES. [2022-12-12 01:40:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72115 conditions, 663 events. 224/663 cut-off events. For 298655/299483 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3101 event pairs, 45 based on Foata normal form. 31/694 useless extension candidates. Maximal degree in co-relation 65390. Up to 498 conditions per place. [2022-12-12 01:40:43,691 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 159 selfloop transitions, 62 changer transitions 24/278 dead transitions. [2022-12-12 01:40:43,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2264 places, 278 transitions, 65287 flow [2022-12-12 01:40:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:40:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:40:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1539 transitions. [2022-12-12 01:40:43,692 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5202839756592292 [2022-12-12 01:40:43,693 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2182 predicate places. [2022-12-12 01:40:43,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 2264 places, 278 transitions, 65287 flow [2022-12-12 01:40:43,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2220 places, 254 transitions, 58894 flow [2022-12-12 01:40:43,725 INFO L495 AbstractCegarLoop]: Abstraction has has 2220 places, 254 transitions, 58894 flow [2022-12-12 01:40:43,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:40:43,725 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:43,725 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:43,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-12-12 01:40:43,725 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1114281873, now seen corresponding path program 133 times [2022-12-12 01:40:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:43,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144322474] [2022-12-12 01:40:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:44,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144322474] [2022-12-12 01:40:44,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144322474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:44,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:44,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288325686] [2022-12-12 01:40:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:44,022 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:44,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2220 places, 254 transitions, 58894 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:44,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:44,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:44,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:45,070 INFO L130 PetriNetUnfolder]: 217/646 cut-off events. [2022-12-12 01:40:45,070 INFO L131 PetriNetUnfolder]: For 285101/285937 co-relation queries the response was YES. [2022-12-12 01:40:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70111 conditions, 646 events. 217/646 cut-off events. For 285101/285937 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2996 event pairs, 46 based on Foata normal form. 31/677 useless extension candidates. Maximal degree in co-relation 63607. Up to 479 conditions per place. [2022-12-12 01:40:45,092 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 150 selfloop transitions, 57 changer transitions 20/260 dead transitions. [2022-12-12 01:40:45,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2252 places, 260 transitions, 60950 flow [2022-12-12 01:40:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:40:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:40:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1488 transitions. [2022-12-12 01:40:45,093 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5182863113897597 [2022-12-12 01:40:45,094 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2170 predicate places. [2022-12-12 01:40:45,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 2252 places, 260 transitions, 60950 flow [2022-12-12 01:40:45,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2195 places, 240 transitions, 55581 flow [2022-12-12 01:40:45,126 INFO L495 AbstractCegarLoop]: Abstraction has has 2195 places, 240 transitions, 55581 flow [2022-12-12 01:40:45,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:45,126 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:45,126 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:45,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-12-12 01:40:45,126 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2123921007, now seen corresponding path program 134 times [2022-12-12 01:40:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:45,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954655840] [2022-12-12 01:40:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:45,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954655840] [2022-12-12 01:40:45,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954655840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:45,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:45,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-12 01:40:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028113604] [2022-12-12 01:40:45,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 01:40:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 01:40:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-12 01:40:45,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:45,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2195 places, 240 transitions, 55581 flow. Second operand has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:45,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:45,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:45,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:46,458 INFO L130 PetriNetUnfolder]: 214/623 cut-off events. [2022-12-12 01:40:46,459 INFO L131 PetriNetUnfolder]: For 289400/290510 co-relation queries the response was YES. [2022-12-12 01:40:46,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68868 conditions, 623 events. 214/623 cut-off events. For 289400/290510 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2813 event pairs, 40 based on Foata normal form. 33/655 useless extension candidates. Maximal degree in co-relation 62316. Up to 466 conditions per place. [2022-12-12 01:40:46,481 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 142 selfloop transitions, 47 changer transitions 25/247 dead transitions. [2022-12-12 01:40:46,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2225 places, 247 transitions, 57894 flow [2022-12-12 01:40:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:40:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:40:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1398 transitions. [2022-12-12 01:40:46,483 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5183537263626251 [2022-12-12 01:40:46,483 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2143 predicate places. [2022-12-12 01:40:46,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 2225 places, 247 transitions, 57894 flow [2022-12-12 01:40:46,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1768 places, 222 transitions, 51129 flow [2022-12-12 01:40:46,514 INFO L495 AbstractCegarLoop]: Abstraction has has 1768 places, 222 transitions, 51129 flow [2022-12-12 01:40:46,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 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) [2022-12-12 01:40:46,514 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:46,515 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-12-12 01:40:46,515 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash -118331471, now seen corresponding path program 135 times [2022-12-12 01:40:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:46,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033190733] [2022-12-12 01:40:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033190733] [2022-12-12 01:40:46,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033190733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:46,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:46,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:40:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759768128] [2022-12-12 01:40:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:40:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:40:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:40:46,760 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:46,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1768 places, 222 transitions, 51129 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:46,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:46,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:47,910 INFO L130 PetriNetUnfolder]: 232/663 cut-off events. [2022-12-12 01:40:47,911 INFO L131 PetriNetUnfolder]: For 303013/304121 co-relation queries the response was YES. [2022-12-12 01:40:47,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74013 conditions, 663 events. 232/663 cut-off events. For 303013/304121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3138 event pairs, 36 based on Foata normal form. 31/693 useless extension candidates. Maximal degree in co-relation 65665. Up to 500 conditions per place. [2022-12-12 01:40:47,935 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 132 selfloop transitions, 65 changer transitions 33/263 dead transitions. [2022-12-12 01:40:47,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1800 places, 263 transitions, 62692 flow [2022-12-12 01:40:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:40:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:40:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1524 transitions. [2022-12-12 01:40:47,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5308254963427377 [2022-12-12 01:40:47,937 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1718 predicate places. [2022-12-12 01:40:47,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 1800 places, 263 transitions, 62692 flow [2022-12-12 01:40:47,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1791 places, 230 transitions, 53686 flow [2022-12-12 01:40:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 1791 places, 230 transitions, 53686 flow [2022-12-12 01:40:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:47,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:47,971 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-12-12 01:40:47,972 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2014964879, now seen corresponding path program 136 times [2022-12-12 01:40:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:47,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440636425] [2022-12-12 01:40:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440636425] [2022-12-12 01:40:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440636425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:40:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919587623] [2022-12-12 01:40:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:48,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:40:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:40:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:40:48,229 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:48,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1791 places, 230 transitions, 53686 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:48,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:48,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:49,334 INFO L130 PetriNetUnfolder]: 233/682 cut-off events. [2022-12-12 01:40:49,334 INFO L131 PetriNetUnfolder]: For 335857/336973 co-relation queries the response was YES. [2022-12-12 01:40:49,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75529 conditions, 682 events. 233/682 cut-off events. For 335857/336973 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3296 event pairs, 56 based on Foata normal form. 31/712 useless extension candidates. Maximal degree in co-relation 67120. Up to 507 conditions per place. [2022-12-12 01:40:49,357 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 133 selfloop transitions, 70 changer transitions 33/269 dead transitions. [2022-12-12 01:40:49,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1824 places, 269 transitions, 64799 flow [2022-12-12 01:40:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:40:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:40:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1566 transitions. [2022-12-12 01:40:49,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2022-12-12 01:40:49,358 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1742 predicate places. [2022-12-12 01:40:49,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 1824 places, 269 transitions, 64799 flow [2022-12-12 01:40:49,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1815 places, 236 transitions, 55727 flow [2022-12-12 01:40:49,391 INFO L495 AbstractCegarLoop]: Abstraction has has 1815 places, 236 transitions, 55727 flow [2022-12-12 01:40:49,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:40:49,391 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:49,391 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-12-12 01:40:49,391 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -427473729, now seen corresponding path program 137 times [2022-12-12 01:40:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:49,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557727593] [2022-12-12 01:40:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:49,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557727593] [2022-12-12 01:40:49,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557727593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:49,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:49,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:40:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587980750] [2022-12-12 01:40:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:49,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:40:49,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:40:49,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:40:49,621 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:49,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1815 places, 236 transitions, 55727 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:40:49,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:49,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:49,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:50,825 INFO L130 PetriNetUnfolder]: 269/780 cut-off events. [2022-12-12 01:40:50,825 INFO L131 PetriNetUnfolder]: For 388726/389850 co-relation queries the response was YES. [2022-12-12 01:40:50,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86313 conditions, 780 events. 269/780 cut-off events. For 388726/389850 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3897 event pairs, 47 based on Foata normal form. 31/810 useless extension candidates. Maximal degree in co-relation 77661. Up to 581 conditions per place. [2022-12-12 01:40:50,853 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 176 selfloop transitions, 96 changer transitions 21/326 dead transitions. [2022-12-12 01:40:50,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1849 places, 326 transitions, 80991 flow [2022-12-12 01:40:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:40:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:40:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1627 transitions. [2022-12-12 01:40:50,854 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5343185550082101 [2022-12-12 01:40:50,854 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1767 predicate places. [2022-12-12 01:40:50,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 1849 places, 326 transitions, 80991 flow [2022-12-12 01:40:50,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1843 places, 305 transitions, 75183 flow [2022-12-12 01:40:50,896 INFO L495 AbstractCegarLoop]: Abstraction has has 1843 places, 305 transitions, 75183 flow [2022-12-12 01:40:50,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:40:50,897 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:50,897 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:50,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-12-12 01:40:50,897 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:50,897 INFO L85 PathProgramCache]: Analyzing trace with hash 759913291, now seen corresponding path program 138 times [2022-12-12 01:40:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:50,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561357355] [2022-12-12 01:40:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:51,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:51,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561357355] [2022-12-12 01:40:51,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561357355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:51,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:51,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:40:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613857485] [2022-12-12 01:40:51,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:40:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:40:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:40:51,139 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:51,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1843 places, 305 transitions, 75183 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:40:51,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:51,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:51,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:52,395 INFO L130 PetriNetUnfolder]: 279/816 cut-off events. [2022-12-12 01:40:52,395 INFO L131 PetriNetUnfolder]: For 413870/415002 co-relation queries the response was YES. [2022-12-12 01:40:52,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91673 conditions, 816 events. 279/816 cut-off events. For 413870/415002 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4264 event pairs, 55 based on Foata normal form. 31/846 useless extension candidates. Maximal degree in co-relation 80862. Up to 615 conditions per place. [2022-12-12 01:40:52,423 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 204 selfloop transitions, 79 changer transitions 33/349 dead transitions. [2022-12-12 01:40:52,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1871 places, 349 transitions, 87995 flow [2022-12-12 01:40:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 01:40:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 01:40:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1354 transitions. [2022-12-12 01:40:52,425 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.536662703131193 [2022-12-12 01:40:52,425 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1789 predicate places. [2022-12-12 01:40:52,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 1871 places, 349 transitions, 87995 flow [2022-12-12 01:40:52,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1862 places, 316 transitions, 78791 flow [2022-12-12 01:40:52,469 INFO L495 AbstractCegarLoop]: Abstraction has has 1862 places, 316 transitions, 78791 flow [2022-12-12 01:40:52,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:40:52,469 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:52,469 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:52,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-12-12 01:40:52,470 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash 505381139, now seen corresponding path program 139 times [2022-12-12 01:40:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923449780] [2022-12-12 01:40:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:52,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:52,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923449780] [2022-12-12 01:40:52,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923449780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:52,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:52,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:40:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118693358] [2022-12-12 01:40:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:52,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:40:52,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:52,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:40:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:40:52,885 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:52,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1862 places, 316 transitions, 78791 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:52,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:52,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:52,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:54,344 INFO L130 PetriNetUnfolder]: 312/900 cut-off events. [2022-12-12 01:40:54,344 INFO L131 PetriNetUnfolder]: For 459319/460459 co-relation queries the response was YES. [2022-12-12 01:40:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101865 conditions, 900 events. 312/900 cut-off events. For 459319/460459 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4782 event pairs, 42 based on Foata normal form. 31/930 useless extension candidates. Maximal degree in co-relation 93273. Up to 683 conditions per place. [2022-12-12 01:40:54,376 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 197 selfloop transitions, 154 changer transitions 21/405 dead transitions. [2022-12-12 01:40:54,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1901 places, 405 transitions, 104295 flow [2022-12-12 01:40:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:40:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:40:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1844 transitions. [2022-12-12 01:40:54,377 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5298850574712644 [2022-12-12 01:40:54,377 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1819 predicate places. [2022-12-12 01:40:54,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 1901 places, 405 transitions, 104295 flow [2022-12-12 01:40:54,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1895 places, 384 transitions, 98403 flow [2022-12-12 01:40:54,427 INFO L495 AbstractCegarLoop]: Abstraction has has 1895 places, 384 transitions, 98403 flow [2022-12-12 01:40:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:54,428 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:54,428 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:54,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-12-12 01:40:54,428 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 990621077, now seen corresponding path program 140 times [2022-12-12 01:40:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:54,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607661929] [2022-12-12 01:40:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:54,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:54,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607661929] [2022-12-12 01:40:54,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607661929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:54,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:54,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:40:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970810257] [2022-12-12 01:40:54,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:54,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:40:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:40:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:40:54,700 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:54,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1895 places, 384 transitions, 98403 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:54,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:54,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:54,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:56,576 INFO L130 PetriNetUnfolder]: 322/929 cut-off events. [2022-12-12 01:40:56,576 INFO L131 PetriNetUnfolder]: For 464974/467214 co-relation queries the response was YES. [2022-12-12 01:40:56,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107388 conditions, 929 events. 322/929 cut-off events. For 464974/467214 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5135 event pairs, 51 based on Foata normal form. 31/958 useless extension candidates. Maximal degree in co-relation 95003. Up to 717 conditions per place. [2022-12-12 01:40:56,611 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 243 selfloop transitions, 119 changer transitions 33/428 dead transitions. [2022-12-12 01:40:56,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1928 places, 428 transitions, 111549 flow [2022-12-12 01:40:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:40:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:40:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1573 transitions. [2022-12-12 01:40:56,612 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5317782285327924 [2022-12-12 01:40:56,612 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1846 predicate places. [2022-12-12 01:40:56,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 1928 places, 428 transitions, 111549 flow [2022-12-12 01:40:56,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1919 places, 395 transitions, 102213 flow [2022-12-12 01:40:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 1919 places, 395 transitions, 102213 flow [2022-12-12 01:40:56,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:56,666 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:56,666 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:56,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-12-12 01:40:56,666 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1009603477, now seen corresponding path program 141 times [2022-12-12 01:40:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900195483] [2022-12-12 01:40:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:56,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:56,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900195483] [2022-12-12 01:40:56,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900195483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:56,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:56,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:40:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717092095] [2022-12-12 01:40:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:56,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:40:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:40:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:40:56,949 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:56,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1919 places, 395 transitions, 102213 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:56,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:56,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:56,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:59,036 INFO L130 PetriNetUnfolder]: 358/1023 cut-off events. [2022-12-12 01:40:59,036 INFO L131 PetriNetUnfolder]: For 532502/534758 co-relation queries the response was YES. [2022-12-12 01:40:59,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118533 conditions, 1023 events. 358/1023 cut-off events. For 532502/534758 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5752 event pairs, 37 based on Foata normal form. 31/1052 useless extension candidates. Maximal degree in co-relation 106761. Up to 790 conditions per place. [2022-12-12 01:40:59,269 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 323 selfloop transitions, 105 changer transitions 20/481 dead transitions. [2022-12-12 01:40:59,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1958 places, 481 transitions, 127379 flow [2022-12-12 01:40:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:40:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:40:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1847 transitions. [2022-12-12 01:40:59,270 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5307471264367816 [2022-12-12 01:40:59,270 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1876 predicate places. [2022-12-12 01:40:59,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 1958 places, 481 transitions, 127379 flow [2022-12-12 01:40:59,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1952 places, 461 transitions, 121687 flow [2022-12-12 01:40:59,333 INFO L495 AbstractCegarLoop]: Abstraction has has 1952 places, 461 transitions, 121687 flow [2022-12-12 01:40:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:40:59,333 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:59,333 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:59,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-12-12 01:40:59,334 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1766434627, now seen corresponding path program 142 times [2022-12-12 01:40:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:59,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445722500] [2022-12-12 01:40:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:59,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445722500] [2022-12-12 01:40:59,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445722500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:40:59,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:40:59,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-12 01:40:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241206623] [2022-12-12 01:40:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:40:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 01:40:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 01:40:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-12-12 01:40:59,599 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:40:59,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1952 places, 461 transitions, 121687 flow. Second operand has 17 states, 17 states have (on average 44.35294117647059) internal successors, (754), 17 states have internal predecessors, (754), 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) [2022-12-12 01:40:59,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:59,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:40:59,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:01,571 INFO L130 PetriNetUnfolder]: 363/1043 cut-off events. [2022-12-12 01:41:01,571 INFO L131 PetriNetUnfolder]: For 540056/542328 co-relation queries the response was YES. [2022-12-12 01:41:01,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122231 conditions, 1043 events. 363/1043 cut-off events. For 540056/542328 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6031 event pairs, 45 based on Foata normal form. 31/1072 useless extension candidates. Maximal degree in co-relation 109085. Up to 810 conditions per place. [2022-12-12 01:41:01,612 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 354 selfloop transitions, 82 changer transitions 26/495 dead transitions. [2022-12-12 01:41:01,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1979 places, 495 transitions, 132291 flow [2022-12-12 01:41:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 01:41:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 01:41:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1317 transitions. [2022-12-12 01:41:01,614 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5406403940886699 [2022-12-12 01:41:01,614 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1897 predicate places. [2022-12-12 01:41:01,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 1979 places, 495 transitions, 132291 flow [2022-12-12 01:41:01,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1972 places, 469 transitions, 124834 flow [2022-12-12 01:41:01,681 INFO L495 AbstractCegarLoop]: Abstraction has has 1972 places, 469 transitions, 124834 flow [2022-12-12 01:41:01,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 44.35294117647059) internal successors, (754), 17 states have internal predecessors, (754), 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) [2022-12-12 01:41:01,681 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:01,682 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-12-12 01:41:01,682 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 493726867, now seen corresponding path program 143 times [2022-12-12 01:41:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227773316] [2022-12-12 01:41:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:01,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227773316] [2022-12-12 01:41:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227773316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527166596] [2022-12-12 01:41:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:01,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:01,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:01,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1972 places, 469 transitions, 124834 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:01,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:01,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:01,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:04,181 INFO L130 PetriNetUnfolder]: 408/1185 cut-off events. [2022-12-12 01:41:04,181 INFO L131 PetriNetUnfolder]: For 631156/633444 co-relation queries the response was YES. [2022-12-12 01:41:04,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138245 conditions, 1185 events. 408/1185 cut-off events. For 631156/633444 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7122 event pairs, 37 based on Foata normal form. 31/1214 useless extension candidates. Maximal degree in co-relation 124266. Up to 915 conditions per place. [2022-12-12 01:41:04,226 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 387 selfloop transitions, 134 changer transitions 22/576 dead transitions. [2022-12-12 01:41:04,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2008 places, 576 transitions, 156546 flow [2022-12-12 01:41:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:41:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:41:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1714 transitions. [2022-12-12 01:41:04,227 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5324634979807393 [2022-12-12 01:41:04,227 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1926 predicate places. [2022-12-12 01:41:04,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 2008 places, 576 transitions, 156546 flow [2022-12-12 01:41:04,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2002 places, 554 transitions, 150198 flow [2022-12-12 01:41:04,303 INFO L495 AbstractCegarLoop]: Abstraction has has 2002 places, 554 transitions, 150198 flow [2022-12-12 01:41:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:04,303 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:04,303 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-12-12 01:41:04,303 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2011967517, now seen corresponding path program 144 times [2022-12-12 01:41:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686783233] [2022-12-12 01:41:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:04,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686783233] [2022-12-12 01:41:04,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686783233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:04,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:04,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393929189] [2022-12-12 01:41:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:04,724 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:04,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2002 places, 554 transitions, 150198 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:04,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:04,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:04,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:07,225 INFO L130 PetriNetUnfolder]: 418/1216 cut-off events. [2022-12-12 01:41:07,225 INFO L131 PetriNetUnfolder]: For 640119/642407 co-relation queries the response was YES. [2022-12-12 01:41:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143415 conditions, 1216 events. 418/1216 cut-off events. For 640119/642407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7494 event pairs, 32 based on Foata normal form. 21/1235 useless extension candidates. Maximal degree in co-relation 127885. Up to 944 conditions per place. [2022-12-12 01:41:07,272 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 427 selfloop transitions, 110 changer transitions 29/599 dead transitions. [2022-12-12 01:41:07,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2038 places, 599 transitions, 164317 flow [2022-12-12 01:41:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:41:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:41:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1709 transitions. [2022-12-12 01:41:07,274 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5309102205653929 [2022-12-12 01:41:07,274 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1956 predicate places. [2022-12-12 01:41:07,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 2038 places, 599 transitions, 164317 flow [2022-12-12 01:41:07,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2030 places, 570 transitions, 155886 flow [2022-12-12 01:41:07,353 INFO L495 AbstractCegarLoop]: Abstraction has has 2030 places, 570 transitions, 155886 flow [2022-12-12 01:41:07,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:07,353 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:07,353 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:07,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-12-12 01:41:07,354 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1909097227, now seen corresponding path program 145 times [2022-12-12 01:41:07,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:07,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485371328] [2022-12-12 01:41:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485371328] [2022-12-12 01:41:07,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485371328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:07,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:07,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:41:07,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529272748] [2022-12-12 01:41:07,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:07,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:41:07,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:41:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:41:07,701 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:07,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2030 places, 570 transitions, 155886 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:07,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:07,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:07,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:09,965 INFO L130 PetriNetUnfolder]: 424/1211 cut-off events. [2022-12-12 01:41:09,966 INFO L131 PetriNetUnfolder]: For 605933/608253 co-relation queries the response was YES. [2022-12-12 01:41:09,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146573 conditions, 1211 events. 424/1211 cut-off events. For 605933/608253 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7437 event pairs, 37 based on Foata normal form. 31/1240 useless extension candidates. Maximal degree in co-relation 130654. Up to 959 conditions per place. [2022-12-12 01:41:10,109 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 407 selfloop transitions, 142 changer transitions 30/612 dead transitions. [2022-12-12 01:41:10,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2064 places, 612 transitions, 169248 flow [2022-12-12 01:41:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:41:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:41:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1622 transitions. [2022-12-12 01:41:10,110 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5326765188834154 [2022-12-12 01:41:10,110 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 1982 predicate places. [2022-12-12 01:41:10,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 2064 places, 612 transitions, 169248 flow [2022-12-12 01:41:10,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2057 places, 582 transitions, 160467 flow [2022-12-12 01:41:10,190 INFO L495 AbstractCegarLoop]: Abstraction has has 2057 places, 582 transitions, 160467 flow [2022-12-12 01:41:10,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:10,191 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:10,191 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:10,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-12-12 01:41:10,191 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 993205791, now seen corresponding path program 146 times [2022-12-12 01:41:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:10,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163837628] [2022-12-12 01:41:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:10,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163837628] [2022-12-12 01:41:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163837628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:10,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:10,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599423534] [2022-12-12 01:41:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:10,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:10,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:10,457 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:10,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2057 places, 582 transitions, 160467 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:10,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:10,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:12,962 INFO L130 PetriNetUnfolder]: 418/1230 cut-off events. [2022-12-12 01:41:12,962 INFO L131 PetriNetUnfolder]: For 679525/681861 co-relation queries the response was YES. [2022-12-12 01:41:12,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146573 conditions, 1230 events. 418/1230 cut-off events. For 679525/681861 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7680 event pairs, 34 based on Foata normal form. 31/1259 useless extension candidates. Maximal degree in co-relation 130346. Up to 952 conditions per place. [2022-12-12 01:41:13,009 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 448 selfloop transitions, 93 changer transitions 35/609 dead transitions. [2022-12-12 01:41:13,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2090 places, 609 transitions, 169533 flow [2022-12-12 01:41:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:41:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:41:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1574 transitions. [2022-12-12 01:41:13,011 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5321162947937795 [2022-12-12 01:41:13,011 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2008 predicate places. [2022-12-12 01:41:13,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 2090 places, 609 transitions, 169533 flow [2022-12-12 01:41:13,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2077 places, 574 transitions, 159213 flow [2022-12-12 01:41:13,158 INFO L495 AbstractCegarLoop]: Abstraction has has 2077 places, 574 transitions, 159213 flow [2022-12-12 01:41:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:13,158 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:13,158 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-12-12 01:41:13,158 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1305550261, now seen corresponding path program 147 times [2022-12-12 01:41:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:13,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769767359] [2022-12-12 01:41:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:13,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769767359] [2022-12-12 01:41:13,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769767359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:13,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:13,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:41:13,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857447482] [2022-12-12 01:41:13,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:13,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:41:13,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:41:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:41:13,416 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:13,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2077 places, 574 transitions, 159213 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:13,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:13,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:15,988 INFO L130 PetriNetUnfolder]: 429/1270 cut-off events. [2022-12-12 01:41:15,989 INFO L131 PetriNetUnfolder]: For 732904/735256 co-relation queries the response was YES. [2022-12-12 01:41:15,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151137 conditions, 1270 events. 429/1270 cut-off events. For 732904/735256 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8023 event pairs, 25 based on Foata normal form. 31/1299 useless extension candidates. Maximal degree in co-relation 134800. Up to 976 conditions per place. [2022-12-12 01:41:16,037 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 448 selfloop transitions, 118 changer transitions 29/628 dead transitions. [2022-12-12 01:41:16,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2111 places, 628 transitions, 176306 flow [2022-12-12 01:41:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:41:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:41:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1625 transitions. [2022-12-12 01:41:16,038 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5336617405582923 [2022-12-12 01:41:16,039 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2029 predicate places. [2022-12-12 01:41:16,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 2111 places, 628 transitions, 176306 flow [2022-12-12 01:41:16,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2103 places, 599 transitions, 167701 flow [2022-12-12 01:41:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 2103 places, 599 transitions, 167701 flow [2022-12-12 01:41:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:16,154 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:16,154 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:16,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-12-12 01:41:16,155 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash 92957681, now seen corresponding path program 148 times [2022-12-12 01:41:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931906302] [2022-12-12 01:41:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:16,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931906302] [2022-12-12 01:41:16,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931906302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:16,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:16,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:41:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728340032] [2022-12-12 01:41:16,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:16,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:41:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:41:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:41:16,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:16,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2103 places, 599 transitions, 167701 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:41:16,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:16,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:16,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:19,636 INFO L130 PetriNetUnfolder]: 459/1318 cut-off events. [2022-12-12 01:41:19,636 INFO L131 PetriNetUnfolder]: For 709610/712022 co-relation queries the response was YES. [2022-12-12 01:41:19,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161529 conditions, 1318 events. 459/1318 cut-off events. For 709610/712022 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8341 event pairs, 28 based on Foata normal form. 32/1349 useless extension candidates. Maximal degree in co-relation 152388. Up to 1039 conditions per place. [2022-12-12 01:41:19,689 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 462 selfloop transitions, 167 changer transitions 31/693 dead transitions. [2022-12-12 01:41:19,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2153 places, 693 transitions, 196866 flow [2022-12-12 01:41:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 01:41:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 01:41:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2311 transitions. [2022-12-12 01:41:19,690 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5208474194275411 [2022-12-12 01:41:19,690 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2071 predicate places. [2022-12-12 01:41:19,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 2153 places, 693 transitions, 196866 flow [2022-12-12 01:41:19,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2145 places, 662 transitions, 187613 flow [2022-12-12 01:41:19,828 INFO L495 AbstractCegarLoop]: Abstraction has has 2145 places, 662 transitions, 187613 flow [2022-12-12 01:41:19,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:41:19,828 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:19,828 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-12-12 01:41:19,828 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash -479470385, now seen corresponding path program 149 times [2022-12-12 01:41:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:19,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652397696] [2022-12-12 01:41:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652397696] [2022-12-12 01:41:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652397696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:20,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919501870] [2022-12-12 01:41:20,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:20,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:20,095 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:20,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2145 places, 662 transitions, 187613 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:20,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:20,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:23,723 INFO L130 PetriNetUnfolder]: 451/1345 cut-off events. [2022-12-12 01:41:23,724 INFO L131 PetriNetUnfolder]: For 820810/823490 co-relation queries the response was YES. [2022-12-12 01:41:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162644 conditions, 1345 events. 451/1345 cut-off events. For 820810/823490 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8781 event pairs, 45 based on Foata normal form. 31/1373 useless extension candidates. Maximal degree in co-relation 156897. Up to 1039 conditions per place. [2022-12-12 01:41:23,777 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 483 selfloop transitions, 125 changer transitions 49/690 dead transitions. [2022-12-12 01:41:23,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2180 places, 690 transitions, 197310 flow [2022-12-12 01:41:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:41:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:41:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1657 transitions. [2022-12-12 01:41:23,778 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290549169859514 [2022-12-12 01:41:23,778 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2098 predicate places. [2022-12-12 01:41:23,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 2180 places, 690 transitions, 197310 flow [2022-12-12 01:41:23,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2164 places, 641 transitions, 182574 flow [2022-12-12 01:41:23,981 INFO L495 AbstractCegarLoop]: Abstraction has has 2164 places, 641 transitions, 182574 flow [2022-12-12 01:41:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:23,982 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:23,982 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:23,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-12-12 01:41:23,982 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2122254971, now seen corresponding path program 150 times [2022-12-12 01:41:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66788135] [2022-12-12 01:41:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:24,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66788135] [2022-12-12 01:41:24,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66788135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:24,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:24,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350292689] [2022-12-12 01:41:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:24,288 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:24,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2164 places, 641 transitions, 182574 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:24,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:24,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:24,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:27,632 INFO L130 PetriNetUnfolder]: 469/1379 cut-off events. [2022-12-12 01:41:27,632 INFO L131 PetriNetUnfolder]: For 808835/811235 co-relation queries the response was YES. [2022-12-12 01:41:27,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169006 conditions, 1379 events. 469/1379 cut-off events. For 808835/811235 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8910 event pairs, 38 based on Foata normal form. 31/1408 useless extension candidates. Maximal degree in co-relation 159743. Up to 1074 conditions per place. [2022-12-12 01:41:27,687 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 491 selfloop transitions, 167 changer transitions 21/712 dead transitions. [2022-12-12 01:41:27,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2203 places, 712 transitions, 205250 flow [2022-12-12 01:41:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:41:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:41:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1850 transitions. [2022-12-12 01:41:27,688 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5316091954022989 [2022-12-12 01:41:27,688 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2121 predicate places. [2022-12-12 01:41:27,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 2203 places, 712 transitions, 205250 flow [2022-12-12 01:41:27,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2197 places, 691 transitions, 198896 flow [2022-12-12 01:41:27,781 INFO L495 AbstractCegarLoop]: Abstraction has has 2197 places, 691 transitions, 198896 flow [2022-12-12 01:41:27,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:27,781 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:27,781 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-12-12 01:41:27,782 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:27,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1913852723, now seen corresponding path program 151 times [2022-12-12 01:41:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:27,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391048694] [2022-12-12 01:41:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:28,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391048694] [2022-12-12 01:41:28,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391048694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:28,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:28,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:41:28,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782317] [2022-12-12 01:41:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:28,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:41:28,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:41:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:41:28,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:28,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2197 places, 691 transitions, 198896 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:28,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:28,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:28,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:31,213 INFO L130 PetriNetUnfolder]: 478/1402 cut-off events. [2022-12-12 01:41:31,213 INFO L131 PetriNetUnfolder]: For 819850/822609 co-relation queries the response was YES. [2022-12-12 01:41:31,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174229 conditions, 1402 events. 478/1402 cut-off events. For 819850/822609 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9168 event pairs, 32 based on Foata normal form. 35/1435 useless extension candidates. Maximal degree in co-relation 164905. Up to 1101 conditions per place. [2022-12-12 01:41:31,288 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 556 selfloop transitions, 112 changer transitions 33/734 dead transitions. [2022-12-12 01:41:31,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2228 places, 734 transitions, 213320 flow [2022-12-12 01:41:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:41:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:41:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1487 transitions. [2022-12-12 01:41:31,290 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5341235632183908 [2022-12-12 01:41:31,290 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2146 predicate places. [2022-12-12 01:41:31,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 2228 places, 734 transitions, 213320 flow [2022-12-12 01:41:31,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2219 places, 701 transitions, 203258 flow [2022-12-12 01:41:31,408 INFO L495 AbstractCegarLoop]: Abstraction has has 2219 places, 701 transitions, 203258 flow [2022-12-12 01:41:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:31,408 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:31,408 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:31,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-12-12 01:41:31,408 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:31,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2074205135, now seen corresponding path program 152 times [2022-12-12 01:41:31,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:31,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710902409] [2022-12-12 01:41:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:31,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:31,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710902409] [2022-12-12 01:41:31,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710902409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:31,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:31,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130704074] [2022-12-12 01:41:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:31,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:31,723 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:31,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2219 places, 701 transitions, 203258 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:31,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:31,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:31,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:35,131 INFO L130 PetriNetUnfolder]: 480/1423 cut-off events. [2022-12-12 01:41:35,131 INFO L131 PetriNetUnfolder]: For 854119/856573 co-relation queries the response was YES. [2022-12-12 01:41:35,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176307 conditions, 1423 events. 480/1423 cut-off events. For 854119/856573 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9436 event pairs, 33 based on Foata normal form. 33/1454 useless extension candidates. Maximal degree in co-relation 155916. Up to 1107 conditions per place. [2022-12-12 01:41:35,187 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 495 selfloop transitions, 157 changer transitions 55/740 dead transitions. [2022-12-12 01:41:35,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2255 places, 740 transitions, 216561 flow [2022-12-12 01:41:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:41:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:41:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1707 transitions. [2022-12-12 01:41:35,189 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5302889095992545 [2022-12-12 01:41:35,189 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2173 predicate places. [2022-12-12 01:41:35,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 2255 places, 740 transitions, 216561 flow [2022-12-12 01:41:35,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2242 places, 685 transitions, 199692 flow [2022-12-12 01:41:35,284 INFO L495 AbstractCegarLoop]: Abstraction has has 2242 places, 685 transitions, 199692 flow [2022-12-12 01:41:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:35,284 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:35,284 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-12-12 01:41:35,284 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1550397529, now seen corresponding path program 153 times [2022-12-12 01:41:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:35,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69139175] [2022-12-12 01:41:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:35,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:35,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69139175] [2022-12-12 01:41:35,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69139175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:35,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:35,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734316780] [2022-12-12 01:41:35,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:35,572 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:35,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2242 places, 685 transitions, 199692 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:35,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:35,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:35,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:39,109 INFO L130 PetriNetUnfolder]: 532/1575 cut-off events. [2022-12-12 01:41:39,109 INFO L131 PetriNetUnfolder]: For 936936/939368 co-relation queries the response was YES. [2022-12-12 01:41:39,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197041 conditions, 1575 events. 532/1575 cut-off events. For 936936/939368 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10690 event pairs, 36 based on Foata normal form. 21/1594 useless extension candidates. Maximal degree in co-relation 187595. Up to 1234 conditions per place. [2022-12-12 01:41:39,173 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 565 selfloop transitions, 207 changer transitions 22/827 dead transitions. [2022-12-12 01:41:39,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2278 places, 827 transitions, 244762 flow [2022-12-12 01:41:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:41:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:41:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1710 transitions. [2022-12-12 01:41:39,283 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5312208760484622 [2022-12-12 01:41:39,284 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2196 predicate places. [2022-12-12 01:41:39,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 2278 places, 827 transitions, 244762 flow [2022-12-12 01:41:39,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2272 places, 805 transitions, 237974 flow [2022-12-12 01:41:39,394 INFO L495 AbstractCegarLoop]: Abstraction has has 2272 places, 805 transitions, 237974 flow [2022-12-12 01:41:39,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:39,394 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:39,395 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:39,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-12-12 01:41:39,395 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2140843809, now seen corresponding path program 154 times [2022-12-12 01:41:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:39,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792373968] [2022-12-12 01:41:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792373968] [2022-12-12 01:41:39,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792373968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:39,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:39,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:41:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780560033] [2022-12-12 01:41:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:41:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:41:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:41:39,681 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:39,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2272 places, 805 transitions, 237974 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:39,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:39,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:44,249 INFO L130 PetriNetUnfolder]: 559/1632 cut-off events. [2022-12-12 01:41:44,249 INFO L131 PetriNetUnfolder]: For 937087/939849 co-relation queries the response was YES. [2022-12-12 01:41:44,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208081 conditions, 1632 events. 559/1632 cut-off events. For 937087/939849 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11176 event pairs, 32 based on Foata normal form. 21/1651 useless extension candidates. Maximal degree in co-relation 198574. Up to 1297 conditions per place. [2022-12-12 01:41:44,318 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 691 selfloop transitions, 134 changer transitions 29/887 dead transitions. [2022-12-12 01:41:44,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2303 places, 887 transitions, 264965 flow [2022-12-12 01:41:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:41:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:41:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1492 transitions. [2022-12-12 01:41:44,320 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5359195402298851 [2022-12-12 01:41:44,320 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2221 predicate places. [2022-12-12 01:41:44,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 2303 places, 887 transitions, 264965 flow [2022-12-12 01:41:44,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2296 places, 858 transitions, 255954 flow [2022-12-12 01:41:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 2296 places, 858 transitions, 255954 flow [2022-12-12 01:41:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:41:44,445 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:44,445 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-12-12 01:41:44,446 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1770929119, now seen corresponding path program 155 times [2022-12-12 01:41:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:44,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786706292] [2022-12-12 01:41:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:44,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786706292] [2022-12-12 01:41:44,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786706292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:44,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:44,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597507303] [2022-12-12 01:41:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:44,799 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:44,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2296 places, 858 transitions, 255954 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:44,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:44,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:44,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:49,113 INFO L130 PetriNetUnfolder]: 556/1637 cut-off events. [2022-12-12 01:41:49,114 INFO L131 PetriNetUnfolder]: For 949902/952438 co-relation queries the response was YES. [2022-12-12 01:41:49,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209582 conditions, 1637 events. 556/1637 cut-off events. For 949902/952438 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11276 event pairs, 36 based on Foata normal form. 25/1660 useless extension candidates. Maximal degree in co-relation 200014. Up to 1298 conditions per place. [2022-12-12 01:41:49,184 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 673 selfloop transitions, 148 changer transitions 34/888 dead transitions. [2022-12-12 01:41:49,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2329 places, 888 transitions, 266991 flow [2022-12-12 01:41:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:41:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:41:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1572 transitions. [2022-12-12 01:41:49,186 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5314401622718052 [2022-12-12 01:41:49,186 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2247 predicate places. [2022-12-12 01:41:49,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 2329 places, 888 transitions, 266991 flow [2022-12-12 01:41:49,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2315 places, 854 transitions, 256353 flow [2022-12-12 01:41:49,388 INFO L495 AbstractCegarLoop]: Abstraction has has 2315 places, 854 transitions, 256353 flow [2022-12-12 01:41:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:49,388 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:49,388 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:49,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-12-12 01:41:49,388 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1002080395, now seen corresponding path program 156 times [2022-12-12 01:41:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:49,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275016656] [2022-12-12 01:41:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:49,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:49,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:49,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275016656] [2022-12-12 01:41:49,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275016656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:49,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:49,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98482662] [2022-12-12 01:41:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:49,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:49,699 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:49,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2315 places, 854 transitions, 256353 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:49,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:49,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:49,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:54,290 INFO L130 PetriNetUnfolder]: 559/1628 cut-off events. [2022-12-12 01:41:54,290 INFO L131 PetriNetUnfolder]: For 936454/939260 co-relation queries the response was YES. [2022-12-12 01:41:54,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212319 conditions, 1628 events. 559/1628 cut-off events. For 936454/939260 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11203 event pairs, 36 based on Foata normal form. 31/1656 useless extension candidates. Maximal degree in co-relation 194995. Up to 1307 conditions per place. [2022-12-12 01:41:54,433 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 643 selfloop transitions, 192 changer transitions 29/897 dead transitions. [2022-12-12 01:41:54,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2355 places, 897 transitions, 271524 flow [2022-12-12 01:41:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 01:41:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 01:41:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1888 transitions. [2022-12-12 01:41:54,435 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.529296327446033 [2022-12-12 01:41:54,435 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2273 predicate places. [2022-12-12 01:41:54,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 2355 places, 897 transitions, 271524 flow [2022-12-12 01:41:54,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2347 places, 868 transitions, 262397 flow [2022-12-12 01:41:54,561 INFO L495 AbstractCegarLoop]: Abstraction has has 2347 places, 868 transitions, 262397 flow [2022-12-12 01:41:54,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:54,561 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:54,561 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:54,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-12-12 01:41:54,561 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash 259291541, now seen corresponding path program 157 times [2022-12-12 01:41:54,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:54,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340560859] [2022-12-12 01:41:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:54,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:54,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340560859] [2022-12-12 01:41:54,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340560859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:54,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:54,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773140779] [2022-12-12 01:41:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:54,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:54,885 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:54,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2347 places, 868 transitions, 262397 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:54,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:54,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:54,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:59,362 INFO L130 PetriNetUnfolder]: 554/1643 cut-off events. [2022-12-12 01:41:59,362 INFO L131 PetriNetUnfolder]: For 999233/1001810 co-relation queries the response was YES. [2022-12-12 01:41:59,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212428 conditions, 1643 events. 554/1643 cut-off events. For 999233/1001810 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11394 event pairs, 33 based on Foata normal form. 35/1676 useless extension candidates. Maximal degree in co-relation 189460. Up to 1299 conditions per place. [2022-12-12 01:41:59,429 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 667 selfloop transitions, 158 changer transitions 35/893 dead transitions. [2022-12-12 01:41:59,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2384 places, 893 transitions, 271994 flow [2022-12-12 01:41:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:41:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:41:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1752 transitions. [2022-12-12 01:41:59,433 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.52994555353902 [2022-12-12 01:41:59,433 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2302 predicate places. [2022-12-12 01:41:59,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 2384 places, 893 transitions, 271994 flow [2022-12-12 01:41:59,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2368 places, 858 transitions, 260904 flow [2022-12-12 01:41:59,621 INFO L495 AbstractCegarLoop]: Abstraction has has 2368 places, 858 transitions, 260904 flow [2022-12-12 01:41:59,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:59,621 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:59,621 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:59,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-12-12 01:41:59,621 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2072907189, now seen corresponding path program 158 times [2022-12-12 01:41:59,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:59,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545396670] [2022-12-12 01:41:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:59,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:59,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545396670] [2022-12-12 01:41:59,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545396670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:41:59,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:41:59,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:41:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304443062] [2022-12-12 01:41:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:41:59,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:41:59,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:41:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:41:59,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:41:59,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2368 places, 858 transitions, 260904 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:41:59,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:59,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:41:59,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:04,731 INFO L130 PetriNetUnfolder]: 565/1694 cut-off events. [2022-12-12 01:42:04,731 INFO L131 PetriNetUnfolder]: For 1087954/1090830 co-relation queries the response was YES. [2022-12-12 01:42:04,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218407 conditions, 1694 events. 565/1694 cut-off events. For 1087954/1090830 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11960 event pairs, 38 based on Foata normal form. 31/1723 useless extension candidates. Maximal degree in co-relation 196883. Up to 1328 conditions per place. [2022-12-12 01:42:04,801 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 681 selfloop transitions, 147 changer transitions 53/914 dead transitions. [2022-12-12 01:42:04,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2406 places, 914 transitions, 280395 flow [2022-12-12 01:42:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:42:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:42:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1791 transitions. [2022-12-12 01:42:04,802 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5278514588859416 [2022-12-12 01:42:04,802 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2324 predicate places. [2022-12-12 01:42:04,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 2406 places, 914 transitions, 280395 flow [2022-12-12 01:42:04,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2396 places, 861 transitions, 263508 flow [2022-12-12 01:42:04,981 INFO L495 AbstractCegarLoop]: Abstraction has has 2396 places, 861 transitions, 263508 flow [2022-12-12 01:42:04,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:04,981 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:04,981 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:04,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-12-12 01:42:04,981 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2135565165, now seen corresponding path program 159 times [2022-12-12 01:42:04,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:04,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973596168] [2022-12-12 01:42:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:05,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973596168] [2022-12-12 01:42:05,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973596168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:05,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:05,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353806496] [2022-12-12 01:42:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:05,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:05,280 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:05,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2396 places, 861 transitions, 263508 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:05,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:05,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:05,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:09,879 INFO L130 PetriNetUnfolder]: 569/1691 cut-off events. [2022-12-12 01:42:09,880 INFO L131 PetriNetUnfolder]: For 1050342/1053222 co-relation queries the response was YES. [2022-12-12 01:42:09,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221359 conditions, 1691 events. 569/1691 cut-off events. For 1050342/1053222 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11803 event pairs, 36 based on Foata normal form. 21/1710 useless extension candidates. Maximal degree in co-relation 211547. Up to 1338 conditions per place. [2022-12-12 01:42:10,033 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 763 selfloop transitions, 108 changer transitions 19/923 dead transitions. [2022-12-12 01:42:10,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2429 places, 923 transitions, 285022 flow [2022-12-12 01:42:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:42:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:42:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1582 transitions. [2022-12-12 01:42:10,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5348208248816768 [2022-12-12 01:42:10,035 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2347 predicate places. [2022-12-12 01:42:10,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 2429 places, 923 transitions, 285022 flow [2022-12-12 01:42:10,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2423 places, 904 transitions, 278930 flow [2022-12-12 01:42:10,169 INFO L495 AbstractCegarLoop]: Abstraction has has 2423 places, 904 transitions, 278930 flow [2022-12-12 01:42:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:10,170 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:10,170 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-12-12 01:42:10,170 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1347351657, now seen corresponding path program 160 times [2022-12-12 01:42:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142217824] [2022-12-12 01:42:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:10,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142217824] [2022-12-12 01:42:10,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142217824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:10,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:10,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879233317] [2022-12-12 01:42:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:10,519 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:10,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2423 places, 904 transitions, 278930 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:10,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:10,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:10,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:15,702 INFO L130 PetriNetUnfolder]: 567/1706 cut-off events. [2022-12-12 01:42:15,702 INFO L131 PetriNetUnfolder]: For 1089077/1091637 co-relation queries the response was YES. [2022-12-12 01:42:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224194 conditions, 1706 events. 567/1706 cut-off events. For 1089077/1091637 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12033 event pairs, 40 based on Foata normal form. 31/1734 useless extension candidates. Maximal degree in co-relation 214321. Up to 1347 conditions per place. [2022-12-12 01:42:15,776 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 782 selfloop transitions, 96 changer transitions 21/932 dead transitions. [2022-12-12 01:42:15,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2451 places, 932 transitions, 289694 flow [2022-12-12 01:42:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 01:42:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 01:42:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1351 transitions. [2022-12-12 01:42:15,777 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5354736424891002 [2022-12-12 01:42:15,778 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2369 predicate places. [2022-12-12 01:42:15,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 2451 places, 932 transitions, 289694 flow [2022-12-12 01:42:15,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2444 places, 911 transitions, 282926 flow [2022-12-12 01:42:15,927 INFO L495 AbstractCegarLoop]: Abstraction has has 2444 places, 911 transitions, 282926 flow [2022-12-12 01:42:15,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:15,927 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:15,927 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-12-12 01:42:15,927 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1446333199, now seen corresponding path program 161 times [2022-12-12 01:42:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918021733] [2022-12-12 01:42:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:16,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:16,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918021733] [2022-12-12 01:42:16,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918021733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:16,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:16,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:16,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930178907] [2022-12-12 01:42:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:16,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:16,287 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:16,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2444 places, 911 transitions, 282926 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:16,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:16,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:16,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:22,026 INFO L130 PetriNetUnfolder]: 634/1903 cut-off events. [2022-12-12 01:42:22,026 INFO L131 PetriNetUnfolder]: For 1208570/1211472 co-relation queries the response was YES. [2022-12-12 01:42:22,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251069 conditions, 1903 events. 634/1903 cut-off events. For 1208570/1211472 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13943 event pairs, 34 based on Foata normal form. 21/1922 useless extension candidates. Maximal degree in co-relation 229143. Up to 1504 conditions per place. [2022-12-12 01:42:22,199 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 771 selfloop transitions, 220 changer transitions 20/1044 dead transitions. [2022-12-12 01:42:22,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2483 places, 1044 transitions, 327804 flow [2022-12-12 01:42:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:42:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:42:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1849 transitions. [2022-12-12 01:42:22,201 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5313218390804598 [2022-12-12 01:42:22,201 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2401 predicate places. [2022-12-12 01:42:22,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 2483 places, 1044 transitions, 327804 flow [2022-12-12 01:42:22,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2477 places, 1024 transitions, 321312 flow [2022-12-12 01:42:22,353 INFO L495 AbstractCegarLoop]: Abstraction has has 2477 places, 1024 transitions, 321312 flow [2022-12-12 01:42:22,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:22,354 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:22,354 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:22,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-12-12 01:42:22,354 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1627665967, now seen corresponding path program 162 times [2022-12-12 01:42:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:22,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942536254] [2022-12-12 01:42:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942536254] [2022-12-12 01:42:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942536254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:42:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234207699] [2022-12-12 01:42:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:42:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:42:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:42:22,656 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:22,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2477 places, 1024 transitions, 321312 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:42:22,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:22,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:22,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:28,984 INFO L130 PetriNetUnfolder]: 639/1933 cut-off events. [2022-12-12 01:42:28,984 INFO L131 PetriNetUnfolder]: For 1250136/1252712 co-relation queries the response was YES. [2022-12-12 01:42:28,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255891 conditions, 1933 events. 639/1933 cut-off events. For 1250136/1252712 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14330 event pairs, 44 based on Foata normal form. 21/1952 useless extension candidates. Maximal degree in co-relation 245896. Up to 1524 conditions per place. [2022-12-12 01:42:29,066 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 846 selfloop transitions, 156 changer transitions 24/1059 dead transitions. [2022-12-12 01:42:29,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2509 places, 1059 transitions, 334731 flow [2022-12-12 01:42:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:42:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:42:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1537 transitions. [2022-12-12 01:42:29,068 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2022-12-12 01:42:29,068 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2427 predicate places. [2022-12-12 01:42:29,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 2509 places, 1059 transitions, 334731 flow [2022-12-12 01:42:29,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2502 places, 1035 transitions, 326886 flow [2022-12-12 01:42:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 2502 places, 1035 transitions, 326886 flow [2022-12-12 01:42:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:42:29,273 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:29,274 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:29,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-12-12 01:42:29,274 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1084721581, now seen corresponding path program 163 times [2022-12-12 01:42:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:29,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644505775] [2022-12-12 01:42:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:29,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:29,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644505775] [2022-12-12 01:42:29,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644505775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:29,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:29,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:42:29,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892840379] [2022-12-12 01:42:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:29,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:42:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:42:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:42:29,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:29,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2502 places, 1035 transitions, 326886 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:42:29,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:29,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:29,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:37,114 INFO L130 PetriNetUnfolder]: 735/2222 cut-off events. [2022-12-12 01:42:37,114 INFO L131 PetriNetUnfolder]: For 1454777/1457385 co-relation queries the response was YES. [2022-12-12 01:42:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296883 conditions, 2222 events. 735/2222 cut-off events. For 1454777/1457385 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 17259 event pairs, 31 based on Foata normal form. 31/2251 useless extension candidates. Maximal degree in co-relation 290604. Up to 1764 conditions per place. [2022-12-12 01:42:37,270 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 865 selfloop transitions, 325 changer transitions 20/1243 dead transitions. [2022-12-12 01:42:37,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2548 places, 1243 transitions, 397162 flow [2022-12-12 01:42:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 01:42:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 01:42:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2151 transitions. [2022-12-12 01:42:37,272 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5260454878943507 [2022-12-12 01:42:37,272 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2466 predicate places. [2022-12-12 01:42:37,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 2548 places, 1243 transitions, 397162 flow [2022-12-12 01:42:37,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2542 places, 1223 transitions, 390590 flow [2022-12-12 01:42:37,486 INFO L495 AbstractCegarLoop]: Abstraction has has 2542 places, 1223 transitions, 390590 flow [2022-12-12 01:42:37,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:42:37,487 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:37,487 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-12-12 01:42:37,487 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1931283155, now seen corresponding path program 164 times [2022-12-12 01:42:37,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:37,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752684007] [2022-12-12 01:42:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:37,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752684007] [2022-12-12 01:42:37,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752684007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:37,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:37,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764473986] [2022-12-12 01:42:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:37,785 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:37,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2542 places, 1223 transitions, 390590 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:37,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:37,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:37,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:46,523 INFO L130 PetriNetUnfolder]: 736/2270 cut-off events. [2022-12-12 01:42:46,524 INFO L131 PetriNetUnfolder]: For 1568416/1571040 co-relation queries the response was YES. [2022-12-12 01:42:46,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300711 conditions, 2270 events. 736/2270 cut-off events. For 1568416/1571040 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17875 event pairs, 36 based on Foata normal form. 31/2299 useless extension candidates. Maximal degree in co-relation 267389. Up to 1776 conditions per place. [2022-12-12 01:42:46,622 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1046 selfloop transitions, 136 changer transitions 35/1250 dead transitions. [2022-12-12 01:42:46,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2577 places, 1250 transitions, 401910 flow [2022-12-12 01:42:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:42:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:42:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1658 transitions. [2022-12-12 01:42:46,623 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5293742017879949 [2022-12-12 01:42:46,624 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2495 predicate places. [2022-12-12 01:42:46,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 2577 places, 1250 transitions, 401910 flow [2022-12-12 01:42:46,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2564 places, 1215 transitions, 390330 flow [2022-12-12 01:42:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 2564 places, 1215 transitions, 390330 flow [2022-12-12 01:42:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:46,885 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:46,885 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-12-12 01:42:46,885 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1813705549, now seen corresponding path program 165 times [2022-12-12 01:42:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:46,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921908714] [2022-12-12 01:42:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:47,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921908714] [2022-12-12 01:42:47,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921908714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:47,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:47,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458801441] [2022-12-12 01:42:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:47,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:47,188 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:47,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2564 places, 1215 transitions, 390330 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:47,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:47,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:47,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:42:56,223 INFO L130 PetriNetUnfolder]: 748/2296 cut-off events. [2022-12-12 01:42:56,223 INFO L131 PetriNetUnfolder]: For 1601482/1604106 co-relation queries the response was YES. [2022-12-12 01:42:56,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306349 conditions, 2296 events. 748/2296 cut-off events. For 1601482/1604106 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 18093 event pairs, 23 based on Foata normal form. 21/2315 useless extension candidates. Maximal degree in co-relation 296171. Up to 1799 conditions per place. [2022-12-12 01:42:56,411 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1092 selfloop transitions, 128 changer transitions 20/1273 dead transitions. [2022-12-12 01:42:56,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2602 places, 1273 transitions, 411968 flow [2022-12-12 01:42:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 01:42:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 01:42:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1801 transitions. [2022-12-12 01:42:56,412 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5307987032124963 [2022-12-12 01:42:56,412 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2520 predicate places. [2022-12-12 01:42:56,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 2602 places, 1273 transitions, 411968 flow [2022-12-12 01:42:56,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2596 places, 1253 transitions, 405316 flow [2022-12-12 01:42:56,596 INFO L495 AbstractCegarLoop]: Abstraction has has 2596 places, 1253 transitions, 405316 flow [2022-12-12 01:42:56,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:56,596 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:42:56,596 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:42:56,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-12-12 01:42:56,596 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:42:56,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:42:56,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1602687397, now seen corresponding path program 166 times [2022-12-12 01:42:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:42:56,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659996251] [2022-12-12 01:42:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:42:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:42:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:42:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:42:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:42:56,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659996251] [2022-12-12 01:42:56,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659996251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:42:56,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:42:56,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:42:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594602604] [2022-12-12 01:42:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:42:56,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:42:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:42:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:42:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:42:56,894 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:42:56,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2596 places, 1253 transitions, 405316 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:42:56,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:42:56,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:42:56,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:06,088 INFO L130 PetriNetUnfolder]: 751/2306 cut-off events. [2022-12-12 01:43:06,088 INFO L131 PetriNetUnfolder]: For 1634669/1637325 co-relation queries the response was YES. [2022-12-12 01:43:06,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310357 conditions, 2306 events. 751/2306 cut-off events. For 1634669/1637325 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 18180 event pairs, 27 based on Foata normal form. 31/2334 useless extension candidates. Maximal degree in co-relation 303964. Up to 1812 conditions per place. [2022-12-12 01:43:06,368 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1113 selfloop transitions, 123 changer transitions 18/1287 dead transitions. [2022-12-12 01:43:06,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2629 places, 1287 transitions, 419118 flow [2022-12-12 01:43:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:43:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:43:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1572 transitions. [2022-12-12 01:43:06,369 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5314401622718052 [2022-12-12 01:43:06,369 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2547 predicate places. [2022-12-12 01:43:06,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 2629 places, 1287 transitions, 419118 flow [2022-12-12 01:43:06,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2623 places, 1269 transitions, 413100 flow [2022-12-12 01:43:06,558 INFO L495 AbstractCegarLoop]: Abstraction has has 2623 places, 1269 transitions, 413100 flow [2022-12-12 01:43:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:06,558 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:06,558 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-12-12 01:43:06,559 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash 85956961, now seen corresponding path program 167 times [2022-12-12 01:43:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126881772] [2022-12-12 01:43:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:06,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126881772] [2022-12-12 01:43:06,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126881772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:06,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:06,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:43:06,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959352209] [2022-12-12 01:43:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:43:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:43:06,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:43:06,934 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:06,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2623 places, 1269 transitions, 413100 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:43:06,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:06,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:06,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:16,004 INFO L130 PetriNetUnfolder]: 753/2318 cut-off events. [2022-12-12 01:43:16,004 INFO L131 PetriNetUnfolder]: For 1654285/1656957 co-relation queries the response was YES. [2022-12-12 01:43:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313393 conditions, 2318 events. 753/2318 cut-off events. For 1654285/1656957 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 18272 event pairs, 33 based on Foata normal form. 31/2346 useless extension candidates. Maximal degree in co-relation 303093. Up to 1819 conditions per place. [2022-12-12 01:43:16,115 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1113 selfloop transitions, 130 changer transitions 17/1293 dead transitions. [2022-12-12 01:43:16,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2652 places, 1293 transitions, 423642 flow [2022-12-12 01:43:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:43:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:43:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1403 transitions. [2022-12-12 01:43:16,132 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5375478927203066 [2022-12-12 01:43:16,132 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2570 predicate places. [2022-12-12 01:43:16,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 2652 places, 1293 transitions, 423642 flow [2022-12-12 01:43:16,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2647 places, 1276 transitions, 417924 flow [2022-12-12 01:43:16,414 INFO L495 AbstractCegarLoop]: Abstraction has has 2647 places, 1276 transitions, 417924 flow [2022-12-12 01:43:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:43:16,415 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:16,415 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-12-12 01:43:16,415 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1877727487, now seen corresponding path program 168 times [2022-12-12 01:43:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:16,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654275569] [2022-12-12 01:43:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:16,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654275569] [2022-12-12 01:43:16,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654275569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:16,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:16,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:43:16,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306106733] [2022-12-12 01:43:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:16,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:43:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:43:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:43:16,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:16,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2647 places, 1276 transitions, 417924 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:16,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:16,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:27,814 INFO L130 PetriNetUnfolder]: 764/2357 cut-off events. [2022-12-12 01:43:27,814 INFO L131 PetriNetUnfolder]: For 1702933/1705939 co-relation queries the response was YES. [2022-12-12 01:43:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320174 conditions, 2357 events. 764/2357 cut-off events. For 1702933/1705939 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18787 event pairs, 29 based on Foata normal form. 21/2375 useless extension candidates. Maximal degree in co-relation 297303. Up to 1848 conditions per place. [2022-12-12 01:43:27,917 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1028 selfloop transitions, 227 changer transitions 26/1314 dead transitions. [2022-12-12 01:43:27,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2686 places, 1314 transitions, 433281 flow [2022-12-12 01:43:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:43:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:43:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1841 transitions. [2022-12-12 01:43:27,919 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290229885057471 [2022-12-12 01:43:27,919 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2604 predicate places. [2022-12-12 01:43:27,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 2686 places, 1314 transitions, 433281 flow [2022-12-12 01:43:28,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2679 places, 1288 transitions, 424472 flow [2022-12-12 01:43:28,182 INFO L495 AbstractCegarLoop]: Abstraction has has 2679 places, 1288 transitions, 424472 flow [2022-12-12 01:43:28,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:28,182 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:28,182 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-12-12 01:43:28,183 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash -255624613, now seen corresponding path program 169 times [2022-12-12 01:43:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:28,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362759712] [2022-12-12 01:43:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:28,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362759712] [2022-12-12 01:43:28,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362759712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:28,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:28,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:43:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80698517] [2022-12-12 01:43:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:28,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:43:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:43:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:43:28,516 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:28,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2679 places, 1288 transitions, 424472 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:28,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:28,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:28,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:39,248 INFO L130 PetriNetUnfolder]: 754/2347 cut-off events. [2022-12-12 01:43:39,249 INFO L131 PetriNetUnfolder]: For 1752008/1754712 co-relation queries the response was YES. [2022-12-12 01:43:39,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319685 conditions, 2347 events. 754/2347 cut-off events. For 1752008/1754712 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18702 event pairs, 31 based on Foata normal form. 31/2375 useless extension candidates. Maximal degree in co-relation 300931. Up to 1834 conditions per place. [2022-12-12 01:43:39,352 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1132 selfloop transitions, 122 changer transitions 20/1307 dead transitions. [2022-12-12 01:43:39,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2710 places, 1307 transitions, 433448 flow [2022-12-12 01:43:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:43:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:43:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1485 transitions. [2022-12-12 01:43:39,353 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5334051724137931 [2022-12-12 01:43:39,354 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2628 predicate places. [2022-12-12 01:43:39,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 2710 places, 1307 transitions, 433448 flow [2022-12-12 01:43:39,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2702 places, 1287 transitions, 426642 flow [2022-12-12 01:43:39,594 INFO L495 AbstractCegarLoop]: Abstraction has has 2702 places, 1287 transitions, 426642 flow [2022-12-12 01:43:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:39,594 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:39,594 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:39,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-12-12 01:43:39,595 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash 546645929, now seen corresponding path program 170 times [2022-12-12 01:43:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:39,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124125970] [2022-12-12 01:43:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:40,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124125970] [2022-12-12 01:43:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124125970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:40,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:43:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705055480] [2022-12-12 01:43:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:43:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:43:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:43:40,047 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:40,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2702 places, 1287 transitions, 426642 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:43:40,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:40,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:40,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:48,441 INFO L130 PetriNetUnfolder]: 768/2380 cut-off events. [2022-12-12 01:43:48,441 INFO L131 PetriNetUnfolder]: For 1787555/1790597 co-relation queries the response was YES. [2022-12-12 01:43:48,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327553 conditions, 2380 events. 768/2380 cut-off events. For 1787555/1790597 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19109 event pairs, 23 based on Foata normal form. 21/2399 useless extension candidates. Maximal degree in co-relation 317070. Up to 1869 conditions per place. [2022-12-12 01:43:48,541 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1131 selfloop transitions, 126 changer transitions 41/1331 dead transitions. [2022-12-12 01:43:48,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2739 places, 1331 transitions, 444225 flow [2022-12-12 01:43:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:43:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:43:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1741 transitions. [2022-12-12 01:43:48,543 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266182698124622 [2022-12-12 01:43:48,543 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2657 predicate places. [2022-12-12 01:43:48,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 2739 places, 1331 transitions, 444225 flow [2022-12-12 01:43:48,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2727 places, 1290 transitions, 430176 flow [2022-12-12 01:43:48,726 INFO L495 AbstractCegarLoop]: Abstraction has has 2727 places, 1290 transitions, 430176 flow [2022-12-12 01:43:48,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:43:48,726 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:48,726 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:48,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-12-12 01:43:48,726 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash -954250309, now seen corresponding path program 171 times [2022-12-12 01:43:48,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:48,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507724479] [2022-12-12 01:43:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:49,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:49,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507724479] [2022-12-12 01:43:49,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507724479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:49,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:49,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:43:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272611003] [2022-12-12 01:43:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:43:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:43:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:43:49,084 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:49,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2727 places, 1290 transitions, 430176 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:49,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:49,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:49,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:57,500 INFO L130 PetriNetUnfolder]: 747/2329 cut-off events. [2022-12-12 01:43:57,500 INFO L131 PetriNetUnfolder]: For 1748973/1751693 co-relation queries the response was YES. [2022-12-12 01:43:57,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321881 conditions, 2329 events. 747/2329 cut-off events. For 1748973/1751693 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18605 event pairs, 26 based on Foata normal form. 21/2347 useless extension candidates. Maximal degree in co-relation 315298. Up to 1825 conditions per place. [2022-12-12 01:43:57,601 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1137 selfloop transitions, 112 changer transitions 21/1303 dead transitions. [2022-12-12 01:43:57,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2757 places, 1303 transitions, 437168 flow [2022-12-12 01:43:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:43:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:43:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1437 transitions. [2022-12-12 01:43:57,603 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5328142380422692 [2022-12-12 01:43:57,603 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2675 predicate places. [2022-12-12 01:43:57,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 2757 places, 1303 transitions, 437168 flow [2022-12-12 01:43:57,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2746 places, 1282 transitions, 429938 flow [2022-12-12 01:43:57,871 INFO L495 AbstractCegarLoop]: Abstraction has has 2746 places, 1282 transitions, 429938 flow [2022-12-12 01:43:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:57,871 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:57,871 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-12-12 01:43:57,871 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1095692349, now seen corresponding path program 172 times [2022-12-12 01:43:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:57,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820392516] [2022-12-12 01:43:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:58,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820392516] [2022-12-12 01:43:58,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820392516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:43:58,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:43:58,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:43:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638341375] [2022-12-12 01:43:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:43:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:43:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:43:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:43:58,234 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:43:58,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2746 places, 1282 transitions, 429938 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:43:58,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:58,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:43:58,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:08,152 INFO L130 PetriNetUnfolder]: 765/2366 cut-off events. [2022-12-12 01:44:08,153 INFO L131 PetriNetUnfolder]: For 1695197/1697677 co-relation queries the response was YES. [2022-12-12 01:44:08,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331182 conditions, 2366 events. 765/2366 cut-off events. For 1695197/1697677 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18887 event pairs, 30 based on Foata normal form. 31/2396 useless extension candidates. Maximal degree in co-relation 312095. Up to 1868 conditions per place. [2022-12-12 01:44:08,257 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1141 selfloop transitions, 150 changer transitions 22/1346 dead transitions. [2022-12-12 01:44:08,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2777 places, 1346 transitions, 454586 flow [2022-12-12 01:44:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:44:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:44:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1490 transitions. [2022-12-12 01:44:08,258 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5352011494252874 [2022-12-12 01:44:08,258 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2695 predicate places. [2022-12-12 01:44:08,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 2777 places, 1346 transitions, 454586 flow [2022-12-12 01:44:08,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2772 places, 1324 transitions, 446968 flow [2022-12-12 01:44:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 2772 places, 1324 transitions, 446968 flow [2022-12-12 01:44:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:44:08,519 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:08,519 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-12-12 01:44:08,519 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1429808101, now seen corresponding path program 173 times [2022-12-12 01:44:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:08,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692206491] [2022-12-12 01:44:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:08,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692206491] [2022-12-12 01:44:08,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692206491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:44:08,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:44:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:44:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080190393] [2022-12-12 01:44:08,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:44:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:44:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:44:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:44:08,853 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:44:08,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2772 places, 1324 transitions, 446968 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:08,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:08,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:44:08,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:17,694 INFO L130 PetriNetUnfolder]: 765/2388 cut-off events. [2022-12-12 01:44:17,695 INFO L131 PetriNetUnfolder]: For 1760741/1763565 co-relation queries the response was YES. [2022-12-12 01:44:17,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333984 conditions, 2388 events. 765/2388 cut-off events. For 1760741/1763565 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19198 event pairs, 39 based on Foata normal form. 23/2409 useless extension candidates. Maximal degree in co-relation 310432. Up to 1873 conditions per place. [2022-12-12 01:44:17,854 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1169 selfloop transitions, 112 changer transitions 35/1349 dead transitions. [2022-12-12 01:44:17,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2806 places, 1349 transitions, 458277 flow [2022-12-12 01:44:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:44:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:44:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1608 transitions. [2022-12-12 01:44:17,855 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5280788177339901 [2022-12-12 01:44:17,855 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2724 predicate places. [2022-12-12 01:44:17,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 2806 places, 1349 transitions, 458277 flow [2022-12-12 01:44:18,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2791 places, 1314 transitions, 446067 flow [2022-12-12 01:44:18,071 INFO L495 AbstractCegarLoop]: Abstraction has has 2791 places, 1314 transitions, 446067 flow [2022-12-12 01:44:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:18,071 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:18,071 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:18,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-12-12 01:44:18,072 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1556264187, now seen corresponding path program 174 times [2022-12-12 01:44:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:18,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629835131] [2022-12-12 01:44:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:18,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629835131] [2022-12-12 01:44:18,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629835131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:44:18,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:44:18,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:44:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358959822] [2022-12-12 01:44:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:44:18,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:44:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:44:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:44:18,490 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:44:18,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2791 places, 1314 transitions, 446067 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:18,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:18,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:44:18,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:28,960 INFO L130 PetriNetUnfolder]: 801/2485 cut-off events. [2022-12-12 01:44:28,961 INFO L131 PetriNetUnfolder]: For 1887279/1890063 co-relation queries the response was YES. [2022-12-12 01:44:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349744 conditions, 2485 events. 801/2485 cut-off events. For 1887279/1890063 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 20073 event pairs, 24 based on Foata normal form. 31/2514 useless extension candidates. Maximal degree in co-relation 313354. Up to 1952 conditions per place. [2022-12-12 01:44:29,073 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 844 selfloop transitions, 510 changer transitions 24/1411 dead transitions. [2022-12-12 01:44:29,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2837 places, 1411 transitions, 482603 flow [2022-12-12 01:44:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 01:44:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 01:44:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2154 transitions. [2022-12-12 01:44:29,075 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5267791636096845 [2022-12-12 01:44:29,075 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2755 predicate places. [2022-12-12 01:44:29,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 2837 places, 1411 transitions, 482603 flow [2022-12-12 01:44:29,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2831 places, 1387 transitions, 474191 flow [2022-12-12 01:44:29,277 INFO L495 AbstractCegarLoop]: Abstraction has has 2831 places, 1387 transitions, 474191 flow [2022-12-12 01:44:29,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:29,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:29,278 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:29,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-12-12 01:44:29,278 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1908203193, now seen corresponding path program 175 times [2022-12-12 01:44:29,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:29,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88887839] [2022-12-12 01:44:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:29,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88887839] [2022-12-12 01:44:29,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88887839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:44:29,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:44:29,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:44:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632409039] [2022-12-12 01:44:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:44:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:44:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:44:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:44:29,699 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:44:29,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2831 places, 1387 transitions, 474191 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:29,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:29,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:44:29,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:39,948 INFO L130 PetriNetUnfolder]: 794/2466 cut-off events. [2022-12-12 01:44:39,948 INFO L131 PetriNetUnfolder]: For 1877729/1880181 co-relation queries the response was YES. [2022-12-12 01:44:39,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349791 conditions, 2466 events. 794/2466 cut-off events. For 1877729/1880181 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19899 event pairs, 29 based on Foata normal form. 31/2495 useless extension candidates. Maximal degree in co-relation 325975. Up to 1941 conditions per place. [2022-12-12 01:44:40,072 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1199 selfloop transitions, 154 changer transitions 20/1406 dead transitions. [2022-12-12 01:44:40,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2868 places, 1406 transitions, 483593 flow [2022-12-12 01:44:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:44:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:44:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1749 transitions. [2022-12-12 01:44:40,074 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290381125226861 [2022-12-12 01:44:40,074 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2786 predicate places. [2022-12-12 01:44:40,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 2868 places, 1406 transitions, 483593 flow [2022-12-12 01:44:40,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2860 places, 1386 transitions, 476547 flow [2022-12-12 01:44:40,283 INFO L495 AbstractCegarLoop]: Abstraction has has 2860 places, 1386 transitions, 476547 flow [2022-12-12 01:44:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:40,284 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:40,284 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-12-12 01:44:40,284 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1988725229, now seen corresponding path program 176 times [2022-12-12 01:44:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325830226] [2022-12-12 01:44:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325830226] [2022-12-12 01:44:40,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325830226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:44:40,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:44:40,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:44:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009841220] [2022-12-12 01:44:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:44:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:44:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:44:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:44:40,699 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:44:40,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2860 places, 1386 transitions, 476547 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:44:40,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:40,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:44:40,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:44:51,161 INFO L130 PetriNetUnfolder]: 835/2627 cut-off events. [2022-12-12 01:44:51,161 INFO L131 PetriNetUnfolder]: For 2088323/2091123 co-relation queries the response was YES. [2022-12-12 01:44:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371134 conditions, 2627 events. 835/2627 cut-off events. For 2088323/2091123 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21714 event pairs, 27 based on Foata normal form. 21/2646 useless extension candidates. Maximal degree in co-relation 360285. Up to 2050 conditions per place. [2022-12-12 01:44:51,280 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1252 selfloop transitions, 191 changer transitions 20/1496 dead transitions. [2022-12-12 01:44:51,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2896 places, 1496 transitions, 518229 flow [2022-12-12 01:44:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:44:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:44:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1714 transitions. [2022-12-12 01:44:51,282 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5324634979807393 [2022-12-12 01:44:51,282 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2814 predicate places. [2022-12-12 01:44:51,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 2896 places, 1496 transitions, 518229 flow [2022-12-12 01:44:51,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2890 places, 1476 transitions, 511137 flow [2022-12-12 01:44:51,597 INFO L495 AbstractCegarLoop]: Abstraction has has 2890 places, 1476 transitions, 511137 flow [2022-12-12 01:44:51,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:44:51,597 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:44:51,597 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:44:51,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-12-12 01:44:51,597 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:44:51,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:44:51,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1500321823, now seen corresponding path program 177 times [2022-12-12 01:44:51,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:44:51,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309338766] [2022-12-12 01:44:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:44:51,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:44:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:44:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:44:51,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:44:51,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309338766] [2022-12-12 01:44:51,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309338766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:44:51,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:44:51,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:44:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391633448] [2022-12-12 01:44:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:44:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:44:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:44:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:44:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:44:51,905 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:44:51,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2890 places, 1476 transitions, 511137 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:44:51,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:44:51,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:44:51,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:04,944 INFO L130 PetriNetUnfolder]: 838/2634 cut-off events. [2022-12-12 01:45:04,944 INFO L131 PetriNetUnfolder]: For 2080114/2082930 co-relation queries the response was YES. [2022-12-12 01:45:04,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375893 conditions, 2634 events. 838/2634 cut-off events. For 2080114/2082930 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21817 event pairs, 27 based on Foata normal form. 21/2653 useless extension candidates. Maximal degree in co-relation 351807. Up to 2065 conditions per place. [2022-12-12 01:45:05,062 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1176 selfloop transitions, 262 changer transitions 34/1505 dead transitions. [2022-12-12 01:45:05,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2934 places, 1505 transitions, 524374 flow [2022-12-12 01:45:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 01:45:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 01:45:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2056 transitions. [2022-12-12 01:45:05,064 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5251596424010218 [2022-12-12 01:45:05,064 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2852 predicate places. [2022-12-12 01:45:05,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 2934 places, 1505 transitions, 524374 flow [2022-12-12 01:45:05,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2921 places, 1471 transitions, 512240 flow [2022-12-12 01:45:05,280 INFO L495 AbstractCegarLoop]: Abstraction has has 2921 places, 1471 transitions, 512240 flow [2022-12-12 01:45:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:45:05,280 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:05,281 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-12-12 01:45:05,281 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:05,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 86350913, now seen corresponding path program 178 times [2022-12-12 01:45:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:05,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991454743] [2022-12-12 01:45:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:05,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:05,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991454743] [2022-12-12 01:45:05,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991454743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:45:05,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:45:05,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:45:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238036789] [2022-12-12 01:45:05,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:45:05,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:45:05,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:45:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:45:05,699 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:45:05,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2921 places, 1471 transitions, 512240 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:45:05,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:05,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:45:05,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:17,703 INFO L130 PetriNetUnfolder]: 844/2675 cut-off events. [2022-12-12 01:45:17,703 INFO L131 PetriNetUnfolder]: For 2200001/2202849 co-relation queries the response was YES. [2022-12-12 01:45:17,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381250 conditions, 2675 events. 844/2675 cut-off events. For 2200001/2202849 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22422 event pairs, 23 based on Foata normal form. 31/2704 useless extension candidates. Maximal degree in co-relation 343599. Up to 2083 conditions per place. [2022-12-12 01:45:17,826 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1283 selfloop transitions, 181 changer transitions 26/1523 dead transitions. [2022-12-12 01:45:17,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2953 places, 1523 transitions, 533771 flow [2022-12-12 01:45:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 01:45:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 01:45:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1525 transitions. [2022-12-12 01:45:17,827 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.531173807035876 [2022-12-12 01:45:17,827 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2871 predicate places. [2022-12-12 01:45:17,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 2953 places, 1523 transitions, 533771 flow [2022-12-12 01:45:18,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2946 places, 1497 transitions, 524442 flow [2022-12-12 01:45:18,157 INFO L495 AbstractCegarLoop]: Abstraction has has 2946 places, 1497 transitions, 524442 flow [2022-12-12 01:45:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:45:18,157 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:18,157 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:18,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-12-12 01:45:18,157 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -264422579, now seen corresponding path program 179 times [2022-12-12 01:45:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714800879] [2022-12-12 01:45:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:18,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714800879] [2022-12-12 01:45:18,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714800879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:45:18,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:45:18,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:45:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024090229] [2022-12-12 01:45:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:45:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:45:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:45:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:45:18,448 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:45:18,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2946 places, 1497 transitions, 524442 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:45:18,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:18,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:45:18,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:34,046 INFO L130 PetriNetUnfolder]: 868/2721 cut-off events. [2022-12-12 01:45:34,047 INFO L131 PetriNetUnfolder]: For 2192620/2195537 co-relation queries the response was YES. [2022-12-12 01:45:34,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392730 conditions, 2721 events. 868/2721 cut-off events. For 2192620/2195537 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22790 event pairs, 22 based on Foata normal form. 32/2751 useless extension candidates. Maximal degree in co-relation 372873. Up to 2135 conditions per place. [2022-12-12 01:45:34,167 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1295 selfloop transitions, 216 changer transitions 28/1572 dead transitions. [2022-12-12 01:45:34,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2981 places, 1572 transitions, 554388 flow [2022-12-12 01:45:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:45:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:45:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1657 transitions. [2022-12-12 01:45:34,168 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5290549169859514 [2022-12-12 01:45:34,169 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2899 predicate places. [2022-12-12 01:45:34,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 2981 places, 1572 transitions, 554388 flow [2022-12-12 01:45:34,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2975 places, 1544 transitions, 544296 flow [2022-12-12 01:45:34,396 INFO L495 AbstractCegarLoop]: Abstraction has has 2975 places, 1544 transitions, 544296 flow [2022-12-12 01:45:34,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:45:34,396 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:34,396 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:34,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-12-12 01:45:34,396 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:34,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1194302529, now seen corresponding path program 180 times [2022-12-12 01:45:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728340507] [2022-12-12 01:45:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:34,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:34,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728340507] [2022-12-12 01:45:34,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728340507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:45:34,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:45:34,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:45:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654150811] [2022-12-12 01:45:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:45:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:45:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:45:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:45:34,705 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:45:34,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2975 places, 1544 transitions, 544296 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:45:34,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:34,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:45:34,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:48,419 INFO L130 PetriNetUnfolder]: 853/2718 cut-off events. [2022-12-12 01:45:48,419 INFO L131 PetriNetUnfolder]: For 2283235/2286222 co-relation queries the response was YES. [2022-12-12 01:45:48,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391846 conditions, 2718 events. 853/2718 cut-off events. For 2283235/2286222 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22973 event pairs, 24 based on Foata normal form. 39/2755 useless extension candidates. Maximal degree in co-relation 371879. Up to 2118 conditions per place. [2022-12-12 01:45:48,542 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1389 selfloop transitions, 113 changer transitions 22/1557 dead transitions. [2022-12-12 01:45:48,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3008 places, 1557 transitions, 552042 flow [2022-12-12 01:45:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:45:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:45:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1551 transitions. [2022-12-12 01:45:48,544 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5243407707910751 [2022-12-12 01:45:48,544 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2926 predicate places. [2022-12-12 01:45:48,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 3008 places, 1557 transitions, 552042 flow [2022-12-12 01:45:48,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3000 places, 1535 transitions, 544054 flow [2022-12-12 01:45:48,893 INFO L495 AbstractCegarLoop]: Abstraction has has 3000 places, 1535 transitions, 544054 flow [2022-12-12 01:45:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:45:48,894 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:48,894 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:48,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-12-12 01:45:48,894 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash -782836351, now seen corresponding path program 181 times [2022-12-12 01:45:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:48,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023830064] [2022-12-12 01:45:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:49,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023830064] [2022-12-12 01:45:49,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023830064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:45:49,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:45:49,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:45:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119522834] [2022-12-12 01:45:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:45:49,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:45:49,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:45:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:45:49,197 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:45:49,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3000 places, 1535 transitions, 544054 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:45:49,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:49,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:45:49,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:46:02,498 INFO L130 PetriNetUnfolder]: 850/2713 cut-off events. [2022-12-12 01:46:02,498 INFO L131 PetriNetUnfolder]: For 2290910/2293446 co-relation queries the response was YES. [2022-12-12 01:46:02,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393092 conditions, 2713 events. 850/2713 cut-off events. For 2290910/2293446 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22858 event pairs, 25 based on Foata normal form. 31/2742 useless extension candidates. Maximal degree in co-relation 350848. Up to 2113 conditions per place. [2022-12-12 01:46:02,696 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1350 selfloop transitions, 151 changer transitions 23/1557 dead transitions. [2022-12-12 01:46:02,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3035 places, 1557 transitions, 555072 flow [2022-12-12 01:46:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:46:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:46:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1659 transitions. [2022-12-12 01:46:02,697 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5296934865900383 [2022-12-12 01:46:02,697 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2953 predicate places. [2022-12-12 01:46:02,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 3035 places, 1557 transitions, 555072 flow [2022-12-12 01:46:02,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3026 places, 1534 transitions, 546694 flow [2022-12-12 01:46:02,929 INFO L495 AbstractCegarLoop]: Abstraction has has 3026 places, 1534 transitions, 546694 flow [2022-12-12 01:46:02,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:46:02,929 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:46:02,929 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:46:02,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-12-12 01:46:02,929 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:46:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:46:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -194799517, now seen corresponding path program 182 times [2022-12-12 01:46:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:46:02,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90551298] [2022-12-12 01:46:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:46:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:46:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:46:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:46:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:46:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90551298] [2022-12-12 01:46:03,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90551298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:46:03,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:46:03,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:46:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561577895] [2022-12-12 01:46:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:46:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:46:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:46:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:46:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:46:03,301 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:46:03,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3026 places, 1534 transitions, 546694 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:46:03,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:46:03,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:46:03,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:46:17,101 INFO L130 PetriNetUnfolder]: 858/2732 cut-off events. [2022-12-12 01:46:17,101 INFO L131 PetriNetUnfolder]: For 2349802/2352714 co-relation queries the response was YES. [2022-12-12 01:46:17,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399093 conditions, 2732 events. 858/2732 cut-off events. For 2349802/2352714 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 23090 event pairs, 23 based on Foata normal form. 31/2761 useless extension candidates. Maximal degree in co-relation 392092. Up to 2134 conditions per place. [2022-12-12 01:46:17,244 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1280 selfloop transitions, 235 changer transitions 23/1571 dead transitions. [2022-12-12 01:46:17,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3062 places, 1571 transitions, 563253 flow [2022-12-12 01:46:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:46:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:46:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1700 transitions. [2022-12-12 01:46:17,245 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5281143212177695 [2022-12-12 01:46:17,246 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 2980 predicate places. [2022-12-12 01:46:17,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 3062 places, 1571 transitions, 563253 flow [2022-12-12 01:46:17,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3056 places, 1548 transitions, 554823 flow [2022-12-12 01:46:17,544 INFO L495 AbstractCegarLoop]: Abstraction has has 3056 places, 1548 transitions, 554823 flow [2022-12-12 01:46:17,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:46:17,545 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:46:17,545 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:46:17,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-12-12 01:46:17,545 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:46:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:46:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1633269373, now seen corresponding path program 183 times [2022-12-12 01:46:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:46:17,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716102134] [2022-12-12 01:46:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:46:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:46:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:46:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:46:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:46:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716102134] [2022-12-12 01:46:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716102134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:46:17,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:46:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:46:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361362118] [2022-12-12 01:46:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:46:17,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:46:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:46:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:46:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:46:17,921 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:46:17,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3056 places, 1548 transitions, 554823 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:46:17,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:46:17,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:46:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:46:32,075 INFO L130 PetriNetUnfolder]: 857/2762 cut-off events. [2022-12-12 01:46:32,076 INFO L131 PetriNetUnfolder]: For 2443596/2446524 co-relation queries the response was YES. [2022-12-12 01:46:32,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402766 conditions, 2762 events. 857/2762 cut-off events. For 2443596/2446524 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 23522 event pairs, 22 based on Foata normal form. 31/2791 useless extension candidates. Maximal degree in co-relation 364065. Up to 2142 conditions per place. [2022-12-12 01:46:32,293 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1395 selfloop transitions, 127 changer transitions 20/1575 dead transitions. [2022-12-12 01:46:32,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3092 places, 1575 transitions, 567804 flow [2022-12-12 01:46:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:46:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:46:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1690 transitions. [2022-12-12 01:46:32,295 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5250077663870767 [2022-12-12 01:46:32,295 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3010 predicate places. [2022-12-12 01:46:32,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 3092 places, 1575 transitions, 567804 flow [2022-12-12 01:46:32,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3086 places, 1555 transitions, 560432 flow [2022-12-12 01:46:32,534 INFO L495 AbstractCegarLoop]: Abstraction has has 3086 places, 1555 transitions, 560432 flow [2022-12-12 01:46:32,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:46:32,534 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:46:32,534 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:46:32,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-12-12 01:46:32,534 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:46:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:46:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1696430623, now seen corresponding path program 184 times [2022-12-12 01:46:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:46:32,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899757242] [2022-12-12 01:46:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:46:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:46:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:46:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:46:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:46:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899757242] [2022-12-12 01:46:32,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899757242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:46:32,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:46:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:46:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765727005] [2022-12-12 01:46:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:46:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:46:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:46:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:46:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:46:32,821 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:46:32,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3086 places, 1555 transitions, 560432 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:46:32,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:46:32,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:46:32,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:46:47,570 INFO L130 PetriNetUnfolder]: 859/2770 cut-off events. [2022-12-12 01:46:47,570 INFO L131 PetriNetUnfolder]: For 2453183/2456111 co-relation queries the response was YES. [2022-12-12 01:46:47,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406985 conditions, 2770 events. 859/2770 cut-off events. For 2453183/2456111 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 23665 event pairs, 26 based on Foata normal form. 21/2789 useless extension candidates. Maximal degree in co-relation 386581. Up to 2153 conditions per place. [2022-12-12 01:46:47,810 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1405 selfloop transitions, 125 changer transitions 19/1582 dead transitions. [2022-12-12 01:46:47,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3119 places, 1582 transitions, 573481 flow [2022-12-12 01:46:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:46:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:46:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1578 transitions. [2022-12-12 01:46:47,811 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5334685598377282 [2022-12-12 01:46:47,812 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3037 predicate places. [2022-12-12 01:46:47,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 3119 places, 1582 transitions, 573481 flow [2022-12-12 01:46:48,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3114 places, 1563 transitions, 566439 flow [2022-12-12 01:46:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 3114 places, 1563 transitions, 566439 flow [2022-12-12 01:46:48,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:46:48,050 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:46:48,050 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:46:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-12-12 01:46:48,051 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:46:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:46:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1809490153, now seen corresponding path program 185 times [2022-12-12 01:46:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:46:48,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127225931] [2022-12-12 01:46:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:46:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:46:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:46:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:46:48,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:46:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127225931] [2022-12-12 01:46:48,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127225931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:46:48,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:46:48,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:46:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441961891] [2022-12-12 01:46:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:46:48,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:46:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:46:48,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:46:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:46:48,358 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:46:48,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3114 places, 1563 transitions, 566439 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:46:48,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:46:48,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:46:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:47:02,800 INFO L130 PetriNetUnfolder]: 866/2799 cut-off events. [2022-12-12 01:47:02,801 INFO L131 PetriNetUnfolder]: For 2514349/2517309 co-relation queries the response was YES. [2022-12-12 01:47:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413285 conditions, 2799 events. 866/2799 cut-off events. For 2514349/2517309 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 24098 event pairs, 30 based on Foata normal form. 31/2828 useless extension candidates. Maximal degree in co-relation 388116. Up to 2175 conditions per place. [2022-12-12 01:47:02,928 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1204 selfloop transitions, 339 changer transitions 26/1602 dead transitions. [2022-12-12 01:47:02,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3157 places, 1602 transitions, 584037 flow [2022-12-12 01:47:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 01:47:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 01:47:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2011 transitions. [2022-12-12 01:47:02,938 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5253396029258098 [2022-12-12 01:47:02,938 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3075 predicate places. [2022-12-12 01:47:02,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 3157 places, 1602 transitions, 584037 flow [2022-12-12 01:47:03,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3150 places, 1576 transitions, 574344 flow [2022-12-12 01:47:03,281 INFO L495 AbstractCegarLoop]: Abstraction has has 3150 places, 1576 transitions, 574344 flow [2022-12-12 01:47:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:47:03,281 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:47:03,281 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:47:03,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-12-12 01:47:03,282 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:47:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:47:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2101966075, now seen corresponding path program 186 times [2022-12-12 01:47:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:47:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854173902] [2022-12-12 01:47:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:47:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:47:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:47:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:47:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:47:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854173902] [2022-12-12 01:47:03,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854173902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:47:03,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:47:03,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:47:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029876140] [2022-12-12 01:47:03,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:47:03,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:47:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:47:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:47:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:47:03,601 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:47:03,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3150 places, 1576 transitions, 574344 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:47:03,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:47:03,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:47:03,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:47:21,390 INFO L130 PetriNetUnfolder]: 941/3093 cut-off events. [2022-12-12 01:47:21,390 INFO L131 PetriNetUnfolder]: For 2928322/2931282 co-relation queries the response was YES. [2022-12-12 01:47:21,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454506 conditions, 3093 events. 941/3093 cut-off events. For 2928322/2931282 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 27734 event pairs, 23 based on Foata normal form. 21/3112 useless extension candidates. Maximal degree in co-relation 447353. Up to 2383 conditions per place. [2022-12-12 01:47:21,658 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1363 selfloop transitions, 376 changer transitions 19/1791 dead transitions. [2022-12-12 01:47:21,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3199 places, 1791 transitions, 657900 flow [2022-12-12 01:47:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 01:47:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 01:47:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2280 transitions. [2022-12-12 01:47:21,659 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5241379310344828 [2022-12-12 01:47:21,660 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3117 predicate places. [2022-12-12 01:47:21,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 3199 places, 1791 transitions, 657900 flow [2022-12-12 01:47:21,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3193 places, 1772 transitions, 650782 flow [2022-12-12 01:47:21,970 INFO L495 AbstractCegarLoop]: Abstraction has has 3193 places, 1772 transitions, 650782 flow [2022-12-12 01:47:21,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:47:21,970 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:47:21,970 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:47:21,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-12-12 01:47:21,970 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:47:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:47:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1668414629, now seen corresponding path program 187 times [2022-12-12 01:47:21,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:47:21,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357836007] [2022-12-12 01:47:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:47:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:47:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:47:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:47:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:47:22,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357836007] [2022-12-12 01:47:22,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357836007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:47:22,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:47:22,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:47:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629988369] [2022-12-12 01:47:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:47:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:47:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:47:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:47:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:47:22,266 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:47:22,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3193 places, 1772 transitions, 650782 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:47:22,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:47:22,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:47:22,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:47:40,512 INFO L130 PetriNetUnfolder]: 940/3096 cut-off events. [2022-12-12 01:47:40,512 INFO L131 PetriNetUnfolder]: For 2925886/2928999 co-relation queries the response was YES. [2022-12-12 01:47:40,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458434 conditions, 3096 events. 940/3096 cut-off events. For 2925886/2928999 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 27807 event pairs, 17 based on Foata normal form. 35/3130 useless extension candidates. Maximal degree in co-relation 446914. Up to 2391 conditions per place. [2022-12-12 01:47:40,653 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1614 selfloop transitions, 124 changer transitions 25/1796 dead transitions. [2022-12-12 01:47:40,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3229 places, 1796 transitions, 663305 flow [2022-12-12 01:47:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 01:47:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 01:47:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1704 transitions. [2022-12-12 01:47:40,655 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5293569431500466 [2022-12-12 01:47:40,655 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3147 predicate places. [2022-12-12 01:47:40,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 3229 places, 1796 transitions, 663305 flow [2022-12-12 01:47:40,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3221 places, 1771 transitions, 653884 flow [2022-12-12 01:47:40,994 INFO L495 AbstractCegarLoop]: Abstraction has has 3221 places, 1771 transitions, 653884 flow [2022-12-12 01:47:40,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:47:40,994 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:47:40,995 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:47:40,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-12-12 01:47:40,995 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:47:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:47:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1006378813, now seen corresponding path program 188 times [2022-12-12 01:47:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:47:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139326758] [2022-12-12 01:47:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:47:40,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:47:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:47:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:47:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:47:41,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139326758] [2022-12-12 01:47:41,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139326758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:47:41,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:47:41,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 01:47:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815985429] [2022-12-12 01:47:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:47:41,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 01:47:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:47:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 01:47:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-12 01:47:41,306 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:47:41,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3221 places, 1771 transitions, 653884 flow. Second operand has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:47:41,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:47:41,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:47:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:48:01,851 INFO L130 PetriNetUnfolder]: 937/3126 cut-off events. [2022-12-12 01:48:01,851 INFO L131 PetriNetUnfolder]: For 3099326/3102394 co-relation queries the response was YES. [2022-12-12 01:48:01,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460714 conditions, 3126 events. 937/3126 cut-off events. For 3099326/3102394 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28265 event pairs, 23 based on Foata normal form. 43/3167 useless extension candidates. Maximal degree in co-relation 435140. Up to 2390 conditions per place. [2022-12-12 01:48:02,057 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1504 selfloop transitions, 212 changer transitions 45/1794 dead transitions. [2022-12-12 01:48:02,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3255 places, 1794 transitions, 666087 flow [2022-12-12 01:48:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:48:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:48:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1607 transitions. [2022-12-12 01:48:02,058 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5277504105090312 [2022-12-12 01:48:02,058 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3173 predicate places. [2022-12-12 01:48:02,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 3255 places, 1794 transitions, 666087 flow [2022-12-12 01:48:02,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3246 places, 1749 transitions, 649035 flow [2022-12-12 01:48:02,428 INFO L495 AbstractCegarLoop]: Abstraction has has 3246 places, 1749 transitions, 649035 flow [2022-12-12 01:48:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.0) internal successors, (880), 20 states have internal predecessors, (880), 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) [2022-12-12 01:48:02,429 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:48:02,429 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:48:02,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-12-12 01:48:02,429 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:48:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:48:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1571293223, now seen corresponding path program 189 times [2022-12-12 01:48:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:48:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918960452] [2022-12-12 01:48:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:48:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:48:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:48:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:48:02,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918960452] [2022-12-12 01:48:02,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918960452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:48:02,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:48:02,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:48:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385892640] [2022-12-12 01:48:02,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:48:02,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:48:02,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:48:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:48:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:48:02,742 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:48:02,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3246 places, 1749 transitions, 649035 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:48:02,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:48:02,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:48:02,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:48:20,996 INFO L130 PetriNetUnfolder]: 933/3083 cut-off events. [2022-12-12 01:48:20,996 INFO L131 PetriNetUnfolder]: For 3006889/3010020 co-relation queries the response was YES. [2022-12-12 01:48:21,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460641 conditions, 3083 events. 933/3083 cut-off events. For 3006889/3010020 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 27670 event pairs, 19 based on Foata normal form. 25/3106 useless extension candidates. Maximal degree in co-relation 453374. Up to 2377 conditions per place. [2022-12-12 01:48:21,169 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1539 selfloop transitions, 180 changer transitions 33/1785 dead transitions. [2022-12-12 01:48:21,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3283 places, 1785 transitions, 666171 flow [2022-12-12 01:48:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 01:48:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 01:48:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1754 transitions. [2022-12-12 01:48:21,210 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.530550514216576 [2022-12-12 01:48:21,210 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3201 predicate places. [2022-12-12 01:48:21,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 3283 places, 1785 transitions, 666171 flow [2022-12-12 01:48:21,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3275 places, 1752 transitions, 653607 flow [2022-12-12 01:48:21,575 INFO L495 AbstractCegarLoop]: Abstraction has has 3275 places, 1752 transitions, 653607 flow [2022-12-12 01:48:21,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:48:21,575 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:48:21,575 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:48:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-12-12 01:48:21,576 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:48:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:48:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1343325165, now seen corresponding path program 190 times [2022-12-12 01:48:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:48:21,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12086694] [2022-12-12 01:48:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:48:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:48:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:48:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:48:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12086694] [2022-12-12 01:48:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12086694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:48:21,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:48:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:48:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189440609] [2022-12-12 01:48:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:48:21,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:48:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:48:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:48:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:48:21,866 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:48:21,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3275 places, 1752 transitions, 653607 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:48:21,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:48:21,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:48:21,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:48:40,491 INFO L130 PetriNetUnfolder]: 923/3072 cut-off events. [2022-12-12 01:48:40,491 INFO L131 PetriNetUnfolder]: For 3054560/3057600 co-relation queries the response was YES. [2022-12-12 01:48:40,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460008 conditions, 3072 events. 923/3072 cut-off events. For 3054560/3057600 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 27529 event pairs, 19 based on Foata normal form. 31/3101 useless extension candidates. Maximal degree in co-relation 438944. Up to 2361 conditions per place. [2022-12-12 01:48:40,628 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1429 selfloop transitions, 265 changer transitions 49/1776 dead transitions. [2022-12-12 01:48:40,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3308 places, 1776 transitions, 666231 flow [2022-12-12 01:48:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 01:48:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 01:48:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1571 transitions. [2022-12-12 01:48:40,629 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5311020960108181 [2022-12-12 01:48:40,629 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3226 predicate places. [2022-12-12 01:48:40,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 3308 places, 1776 transitions, 666231 flow [2022-12-12 01:48:41,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3296 places, 1727 transitions, 647480 flow [2022-12-12 01:48:41,021 INFO L495 AbstractCegarLoop]: Abstraction has has 3296 places, 1727 transitions, 647480 flow [2022-12-12 01:48:41,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:48:41,021 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:48:41,021 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:48:41,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-12-12 01:48:41,021 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:48:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:48:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash 302416837, now seen corresponding path program 191 times [2022-12-12 01:48:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:48:41,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080053965] [2022-12-12 01:48:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:48:41,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:48:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:48:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:48:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080053965] [2022-12-12 01:48:41,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080053965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:48:41,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:48:41,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:48:41,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208147169] [2022-12-12 01:48:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:48:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:48:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:48:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:48:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:48:41,321 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:48:41,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3296 places, 1727 transitions, 647480 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:48:41,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:48:41,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:48:41,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:49:00,121 INFO L130 PetriNetUnfolder]: 902/3016 cut-off events. [2022-12-12 01:49:00,122 INFO L131 PetriNetUnfolder]: For 2975466/2978154 co-relation queries the response was YES. [2022-12-12 01:49:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455472 conditions, 3016 events. 902/3016 cut-off events. For 2975466/2978154 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 26889 event pairs, 14 based on Foata normal form. 31/3046 useless extension candidates. Maximal degree in co-relation 403369. Up to 2325 conditions per place. [2022-12-12 01:49:00,261 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1319 selfloop transitions, 396 changer transitions 41/1789 dead transitions. [2022-12-12 01:49:00,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3330 places, 1789 transitions, 674682 flow [2022-12-12 01:49:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:49:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:49:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1616 transitions. [2022-12-12 01:49:00,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5307060755336618 [2022-12-12 01:49:00,262 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3248 predicate places. [2022-12-12 01:49:00,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 3330 places, 1789 transitions, 674682 flow [2022-12-12 01:49:00,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3325 places, 1748 transitions, 658932 flow [2022-12-12 01:49:00,662 INFO L495 AbstractCegarLoop]: Abstraction has has 3325 places, 1748 transitions, 658932 flow [2022-12-12 01:49:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:49:00,662 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:49:00,662 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:49:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-12-12 01:49:00,662 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:49:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:49:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1544279849, now seen corresponding path program 192 times [2022-12-12 01:49:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:49:00,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841140083] [2022-12-12 01:49:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:49:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:49:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:49:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:49:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:49:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841140083] [2022-12-12 01:49:01,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841140083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:49:01,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:49:01,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-12 01:49:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329789420] [2022-12-12 01:49:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:49:01,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 01:49:01,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:49:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 01:49:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-12 01:49:01,012 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:49:01,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3325 places, 1748 transitions, 658932 flow. Second operand has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:49:01,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:49:01,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:49:01,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:49:24,644 INFO L130 PetriNetUnfolder]: 882/2900 cut-off events. [2022-12-12 01:49:24,644 INFO L131 PetriNetUnfolder]: For 2765034/2768588 co-relation queries the response was YES. [2022-12-12 01:49:24,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445999 conditions, 2900 events. 882/2900 cut-off events. For 2765034/2768588 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25403 event pairs, 18 based on Foata normal form. 31/2929 useless extension candidates. Maximal degree in co-relation 438618. Up to 2264 conditions per place. [2022-12-12 01:49:24,911 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1591 selfloop transitions, 83 changer transitions 49/1756 dead transitions. [2022-12-12 01:49:24,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3359 places, 1756 transitions, 665456 flow [2022-12-12 01:49:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 01:49:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 01:49:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1588 transitions. [2022-12-12 01:49:24,913 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5215106732348112 [2022-12-12 01:49:24,913 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3277 predicate places. [2022-12-12 01:49:24,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 3359 places, 1756 transitions, 665456 flow [2022-12-12 01:49:25,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3324 places, 1707 transitions, 646533 flow [2022-12-12 01:49:25,212 INFO L495 AbstractCegarLoop]: Abstraction has has 3324 places, 1707 transitions, 646533 flow [2022-12-12 01:49:25,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 43.904761904761905) internal successors, (922), 21 states have internal predecessors, (922), 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) [2022-12-12 01:49:25,212 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:49:25,212 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:49:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-12-12 01:49:25,213 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:49:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:49:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash 608363401, now seen corresponding path program 193 times [2022-12-12 01:49:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:49:25,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783411123] [2022-12-12 01:49:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:49:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:49:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:49:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:49:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:49:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783411123] [2022-12-12 01:49:25,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783411123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:49:25,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:49:25,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 01:49:25,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501980883] [2022-12-12 01:49:25,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:49:25,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 01:49:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:49:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 01:49:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-12 01:49:25,486 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:49:25,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3324 places, 1707 transitions, 646533 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:49:25,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:49:25,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:49:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:49:43,713 INFO L130 PetriNetUnfolder]: 878/2889 cut-off events. [2022-12-12 01:49:43,714 INFO L131 PetriNetUnfolder]: For 2791742/2794446 co-relation queries the response was YES. [2022-12-12 01:49:43,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443856 conditions, 2889 events. 878/2889 cut-off events. For 2791742/2794446 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25266 event pairs, 24 based on Foata normal form. 31/2918 useless extension candidates. Maximal degree in co-relation 422459. Up to 2241 conditions per place. [2022-12-12 01:49:43,848 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1407 selfloop transitions, 275 changer transitions 20/1735 dead transitions. [2022-12-12 01:49:43,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3355 places, 1735 transitions, 660751 flow [2022-12-12 01:49:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:49:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:49:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1479 transitions. [2022-12-12 01:49:43,849 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-12-12 01:49:43,850 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3273 predicate places. [2022-12-12 01:49:43,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 3355 places, 1735 transitions, 660751 flow [2022-12-12 01:49:44,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3350 places, 1715 transitions, 652985 flow [2022-12-12 01:49:44,204 INFO L495 AbstractCegarLoop]: Abstraction has has 3350 places, 1715 transitions, 652985 flow [2022-12-12 01:49:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 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) [2022-12-12 01:49:44,204 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:49:44,204 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:49:44,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-12-12 01:49:44,204 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:49:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:49:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash -883930757, now seen corresponding path program 194 times [2022-12-12 01:49:44,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:49:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322710694] [2022-12-12 01:49:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:49:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:49:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:49:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:49:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:49:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322710694] [2022-12-12 01:49:44,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322710694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:49:44,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:49:44,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:49:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550844608] [2022-12-12 01:49:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:49:44,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:49:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:49:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:49:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:49:44,478 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:49:44,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3350 places, 1715 transitions, 652985 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:49:44,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:49:44,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:49:44,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:50:04,456 INFO L130 PetriNetUnfolder]: 885/2878 cut-off events. [2022-12-12 01:50:04,456 INFO L131 PetriNetUnfolder]: For 2727841/2731088 co-relation queries the response was YES. [2022-12-12 01:50:04,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447487 conditions, 2878 events. 885/2878 cut-off events. For 2727841/2731088 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 25015 event pairs, 21 based on Foata normal form. 35/2912 useless extension candidates. Maximal degree in co-relation 406476. Up to 2248 conditions per place. [2022-12-12 01:50:04,593 INFO L137 encePairwiseOnDemand]: 57/87 looper letters, 1561 selfloop transitions, 129 changer transitions 22/1745 dead transitions. [2022-12-12 01:50:04,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3380 places, 1745 transitions, 668064 flow [2022-12-12 01:50:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 01:50:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 01:50:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1445 transitions. [2022-12-12 01:50:04,598 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.53578049684835 [2022-12-12 01:50:04,598 INFO L295 CegarLoopForPetriNet]: 82 programPoint places, 3298 predicate places. [2022-12-12 01:50:04,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 3380 places, 1745 transitions, 668064 flow [2022-12-12 01:50:04,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3374 places, 1723 transitions, 659472 flow [2022-12-12 01:50:04,973 INFO L495 AbstractCegarLoop]: Abstraction has has 3374 places, 1723 transitions, 659472 flow [2022-12-12 01:50:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:50:04,988 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:50:04,988 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:50:04,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-12-12 01:50:04,988 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:50:04,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:50:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1349824927, now seen corresponding path program 195 times [2022-12-12 01:50:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:50:04,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033655002] [2022-12-12 01:50:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:50:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:50:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:50:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:50:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:50:05,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033655002] [2022-12-12 01:50:05,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033655002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:50:05,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:50:05,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-12 01:50:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772228909] [2022-12-12 01:50:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:50:05,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 01:50:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:50:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 01:50:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-12-12 01:50:05,265 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 87 [2022-12-12 01:50:05,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3374 places, 1723 transitions, 659472 flow. Second operand has 18 states, 18 states have (on average 44.22222222222222) internal successors, (796), 18 states have internal predecessors, (796), 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) [2022-12-12 01:50:05,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:50:05,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 87 [2022-12-12 01:50:05,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 01:50:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 01:50:07,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 01:50:07,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-12-12 01:50:07,631 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 42/87 universal loopers) in iteration 195,while PetriNetUnfolder was constructing finite prefix that currently has 27881 conditions, 173 events (52/172 cut-off events. For 209431/209477 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 690 event pairs, 0 based on Foata normal form. 30/224 useless extension candidates. Maximal degree in co-relation 25901. Up to 113 conditions per place.). [2022-12-12 01:50:07,635 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 01:50:07,635 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 01:50:07,637 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:50:07,639 INFO L445 BasicCegarLoop]: Path program histogram: [195] [2022-12-12 01:50:07,642 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 01:50:07,642 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 01:50:07,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:50:07 BasicIcfg [2022-12-12 01:50:07,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 01:50:07,645 INFO L158 Benchmark]: Toolchain (without parser) took 822138.92ms. Allocated memory was 220.2MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 196.1MB in the beginning and 1.0GB in the end (delta: -805.1MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-12-12 01:50:07,645 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 220.2MB. Free memory is still 196.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 01:50:07,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 220.2MB. Free memory was 196.1MB in the beginning and 185.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-12 01:50:07,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.98ms. Allocated memory is still 220.2MB. Free memory was 185.3MB in the beginning and 183.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 01:50:07,646 INFO L158 Benchmark]: Boogie Preprocessor took 23.18ms. Allocated memory is still 220.2MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 01:50:07,650 INFO L158 Benchmark]: RCFGBuilder took 255.76ms. Allocated memory is still 220.2MB. Free memory was 182.2MB in the beginning and 170.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 01:50:07,650 INFO L158 Benchmark]: TraceAbstraction took 821645.99ms. Allocated memory was 220.2MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 169.1MB in the beginning and 1.0GB in the end (delta: -832.1MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-12-12 01:50:07,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 220.2MB. Free memory is still 196.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 220.2MB. Free memory was 196.1MB in the beginning and 185.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.98ms. Allocated memory is still 220.2MB. Free memory was 185.3MB in the beginning and 183.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.18ms. Allocated memory is still 220.2MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 255.76ms. Allocated memory is still 220.2MB. Free memory was 182.2MB in the beginning and 170.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 821645.99ms. Allocated memory was 220.2MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 169.1MB in the beginning and 1.0GB in the end (delta: -832.1MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 42/87 universal loopers) in iteration 195,while PetriNetUnfolder was constructing finite prefix that currently has 27881 conditions, 173 events (52/172 cut-off events. For 209431/209477 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 690 event pairs, 0 based on Foata normal form. 30/224 useless extension candidates. Maximal degree in co-relation 25901. Up to 113 conditions per place.). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 42/87 universal loopers) in iteration 195,while PetriNetUnfolder was constructing finite prefix that currently has 27881 conditions, 173 events (52/172 cut-off events. For 209431/209477 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 690 event pairs, 0 based on Foata normal form. 30/224 useless extension candidates. Maximal degree in co-relation 25901. Up to 113 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 42/87 universal loopers) in iteration 195,while PetriNetUnfolder was constructing finite prefix that currently has 27881 conditions, 173 events (52/172 cut-off events. For 209431/209477 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 690 event pairs, 0 based on Foata normal form. 30/224 useless extension candidates. Maximal degree in co-relation 25901. Up to 113 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 17.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 821.6s, OverallIterations: 195, TraceHistogramMax: 1, PathProgramHistogramMax: 195, EmptinessCheckTime: 0.0s, AutomataDifference: 737.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21181 SdHoareTripleChecker+Valid, 84.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21181 mSDsluCounter, 108554 SdHoareTripleChecker+Invalid, 71.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98486 mSDsCounter, 1995 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203070 IncrementalHoareTripleChecker+Invalid, 205065 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1995 mSolverCounterUnsat, 10068 mSDtfsCounter, 203070 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9802 GetRequests, 752 SyntacticMatches, 260 SemanticMatches, 8790 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82951 ImplicationChecksByTransitivity, 103.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659472occurred in iteration=194, InterpolantAutomatonStates: 6985, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.1s AutomataMinimizationTime, 194 MinimizatonAttempts, 1029821 StatesRemovedByMinimization, 194 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 63.6s InterpolantComputationTime, 14235 NumberOfCodeBlocks, 14235 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 14040 ConstructedInterpolants, 0 QuantifiedInterpolants, 156758 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 195 InterpolantComputations, 195 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown