/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:14:05,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:14:05,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:14:05,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:14:05,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:14:05,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:14:05,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:14:05,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:14:05,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:14:05,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:14:05,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:14:05,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:14:05,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:14:05,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:14:05,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:14:05,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:14:05,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:14:05,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:14:05,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:14:05,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:14:05,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:14:05,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:14:05,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:14:05,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:14:05,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:14:05,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:14:05,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:14:05,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:14:05,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:14:05,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:14:05,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:14:05,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:14:05,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:14:05,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:14:05,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:14:05,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:14:05,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:14:05,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:14:05,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:14:05,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:14:05,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:14:05,766 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-VariableLbe.epf [2023-01-27 20:14:05,795 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:14:05,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:14:05,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:14:05,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:14:05,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:14:05,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:14:05,797 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:14:05,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:14:05,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:14:05,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:14:05,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:14:05,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:14:05,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:14:05,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:14:05,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:14:05,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:14:05,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:14:05,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:14:05,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:14:05,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:14:05,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:14:05,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:14:05,800 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:14:06,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:14:06,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:14:06,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:14:06,037 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:14:06,037 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:14:06,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-27 20:14:07,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:14:07,206 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:14:07,206 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-27 20:14:07,211 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3e8af6f/57ae19c22d7e4eb79632e45e9fd8fbe1/FLAGfae3d3b42 [2023-01-27 20:14:07,221 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3e8af6f/57ae19c22d7e4eb79632e45e9fd8fbe1 [2023-01-27 20:14:07,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:14:07,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:14:07,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:14:07,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:14:07,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:14:07,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2531fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07, skipping insertion in model container [2023-01-27 20:14:07,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:14:07,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:14:07,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-01-27 20:14:07,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:14:07,403 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:14:07,430 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-01-27 20:14:07,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:14:07,442 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:14:07,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07 WrapperNode [2023-01-27 20:14:07,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:14:07,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:14:07,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:14:07,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:14:07,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,475 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-01-27 20:14:07,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:14:07,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:14:07,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:14:07,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:14:07,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:14:07,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:14:07,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:14:07,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:14:07,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (1/1) ... [2023-01-27 20:14:07,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:14:07,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:14:07,550 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) [2023-01-27 20:14:07,588 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 [2023-01-27 20:14:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:14:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:14:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:14:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:14:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:14:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:14:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:14:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:14:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:14:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:14:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:14:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:14:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:14:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:14:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:14:07,617 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:14:07,752 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:14:07,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:14:08,102 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:14:08,111 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:14:08,111 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 20:14:08,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:14:08 BoogieIcfgContainer [2023-01-27 20:14:08,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:14:08,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:14:08,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:14:08,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:14:08,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:14:07" (1/3) ... [2023-01-27 20:14:08,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8ff7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:14:08, skipping insertion in model container [2023-01-27 20:14:08,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:14:07" (2/3) ... [2023-01-27 20:14:08,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8ff7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:14:08, skipping insertion in model container [2023-01-27 20:14:08,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:14:08" (3/3) ... [2023-01-27 20:14:08,118 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-01-27 20:14:08,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:14:08,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:14:08,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:14:08,190 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:14:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 360 transitions, 744 flow [2023-01-27 20:14:08,364 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2023-01-27 20:14:08,367 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:14:08,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 26/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 808 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-27 20:14:08,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 360 transitions, 744 flow [2023-01-27 20:14:08,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 347 transitions, 712 flow [2023-01-27 20:14:08,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:14:08,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-27 20:14:08,406 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-27 20:14:08,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 712 flow [2023-01-27 20:14:08,471 INFO L130 PetriNetUnfolder]: 26/347 cut-off events. [2023-01-27 20:14:08,471 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:14:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 26/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 807 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-27 20:14:08,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-01-27 20:14:16,786 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-01-27 20:14:16,787 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-01-27 20:14:16,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:14:16,801 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;@dac254e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:14:16,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:14:16,805 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-27 20:14:16,806 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:14:16,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:16,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:16,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:16,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 938001691, now seen corresponding path program 1 times [2023-01-27 20:14:16,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:16,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807918507] [2023-01-27 20:14:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:14:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807918507] [2023-01-27 20:14:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807918507] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:17,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:17,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:14:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961097967] [2023-01-27 20:14:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:17,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:14:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:14:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:14:17,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-27 20:14:17,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:17,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-27 20:14:17,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:17,274 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2023-01-27 20:14:17,274 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-01-27 20:14:17,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-01-27 20:14:17,276 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-27 20:14:17,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-01-27 20:14:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:14:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:14:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-01-27 20:14:17,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301772589710333 [2023-01-27 20:14:17,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-01-27 20:14:17,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-01-27 20:14:17,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:17,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-01-27 20:14:17,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,312 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 995 transitions. [2023-01-27 20:14:17,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-01-27 20:14:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:14:17,318 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-01-27 20:14:17,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-27 20:14:17,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-27 20:14:17,324 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-01-27 20:14:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:17,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:14:17,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:17,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1524160958, now seen corresponding path program 1 times [2023-01-27 20:14:17,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082191135] [2023-01-27 20:14:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:14:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082191135] [2023-01-27 20:14:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082191135] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:14:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671306387] [2023-01-27 20:14:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:17,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:17,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:14:17,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:14:17,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:14:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:14:17,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:14:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:14:17,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:14:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:14:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671306387] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:14:17,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:14:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 20:14:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963130346] [2023-01-27 20:14:17,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:14:17,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:17,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-27 20:14:17,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:17,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-27 20:14:17,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:17,905 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2023-01-27 20:14:17,905 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:14:17,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-01-27 20:14:17,907 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-27 20:14:17,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-01-27 20:14:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:14:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:14:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1644 transitions. [2023-01-27 20:14:17,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264591439688716 [2023-01-27 20:14:17,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1644 transitions. [2023-01-27 20:14:17,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1644 transitions. [2023-01-27 20:14:17,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:17,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1644 transitions. [2023-01-27 20:14:17,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.8) internal successors, (1644), 5 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,938 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1644 transitions. [2023-01-27 20:14:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-01-27 20:14:17,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:17,939 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-01-27 20:14:17,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-27 20:14:17,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-27 20:14:17,940 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-01-27 20:14:17,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:17,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:17,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:17,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:14:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:18,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:18,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -793936030, now seen corresponding path program 2 times [2023-01-27 20:14:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:18,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992896747] [2023-01-27 20:14:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992896747] [2023-01-27 20:14:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992896747] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067349173] [2023-01-27 20:14:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:18,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-27 20:14:18,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:18,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:18,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-27 20:14:18,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:19,026 INFO L130 PetriNetUnfolder]: 391/589 cut-off events. [2023-01-27 20:14:19,026 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 20:14:19,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1862 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-01-27 20:14:19,029 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-01-27 20:14:19,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-01-27 20:14:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1704 transitions. [2023-01-27 20:14:19,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36835278858625164 [2023-01-27 20:14:19,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1704 transitions. [2023-01-27 20:14:19,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1704 transitions. [2023-01-27 20:14:19,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:19,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1704 transitions. [2023-01-27 20:14:19,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,044 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 1704 transitions. [2023-01-27 20:14:19,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-01-27 20:14:19,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:19,047 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-01-27 20:14:19,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-01-27 20:14:19,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-01-27 20:14:19,048 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-01-27 20:14:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:19,049 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:14:19,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:19,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1410407670, now seen corresponding path program 3 times [2023-01-27 20:14:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981465032] [2023-01-27 20:14:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:19,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981465032] [2023-01-27 20:14:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981465032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:19,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:19,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:19,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120727690] [2023-01-27 20:14:19,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:19,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:19,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-27 20:14:19,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:19,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-27 20:14:19,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:19,909 INFO L130 PetriNetUnfolder]: 598/896 cut-off events. [2023-01-27 20:14:19,910 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-01-27 20:14:19,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-01-27 20:14:19,914 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-01-27 20:14:19,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-01-27 20:14:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-01-27 20:14:19,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674881106787722 [2023-01-27 20:14:19,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-01-27 20:14:19,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-01-27 20:14:19,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:19,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-01-27 20:14:19,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,929 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 1700 transitions. [2023-01-27 20:14:19,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-01-27 20:14:19,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:19,933 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-01-27 20:14:19,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-27 20:14:19,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-01-27 20:14:19,935 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-01-27 20:14:19,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:19,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:19,935 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:14:19,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:19,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1289977774, now seen corresponding path program 4 times [2023-01-27 20:14:19,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:19,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307335323] [2023-01-27 20:14:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307335323] [2023-01-27 20:14:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307335323] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:20,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:20,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994093050] [2023-01-27 20:14:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:20,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:20,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:20,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 771 [2023-01-27 20:14:20,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:20,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:20,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 771 [2023-01-27 20:14:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:20,932 INFO L130 PetriNetUnfolder]: 1264/1955 cut-off events. [2023-01-27 20:14:20,933 INFO L131 PetriNetUnfolder]: For 2770/2770 co-relation queries the response was YES. [2023-01-27 20:14:20,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1955 events. 1264/1955 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8935 event pairs, 428 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 6222. Up to 875 conditions per place. [2023-01-27 20:14:20,942 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 108 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2023-01-27 20:14:20,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 822 flow [2023-01-27 20:14:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1943 transitions. [2023-01-27 20:14:20,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3600148230498425 [2023-01-27 20:14:20,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1943 transitions. [2023-01-27 20:14:20,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1943 transitions. [2023-01-27 20:14:20,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:20,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1943 transitions. [2023-01-27 20:14:20,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.57142857142856) internal successors, (1943), 7 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:20,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:20,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:20,958 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 1943 transitions. [2023-01-27 20:14:20,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 822 flow [2023-01-27 20:14:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 771 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:20,966 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 298 flow [2023-01-27 20:14:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-01-27 20:14:20,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-01-27 20:14:20,968 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 298 flow [2023-01-27 20:14:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:20,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:20,969 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:14:20,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:20,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash 769737702, now seen corresponding path program 5 times [2023-01-27 20:14:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857720711] [2023-01-27 20:14:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857720711] [2023-01-27 20:14:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857720711] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108047076] [2023-01-27 20:14:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:21,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 771 [2023-01-27 20:14:21,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:21,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:21,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 771 [2023-01-27 20:14:21,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:22,396 INFO L130 PetriNetUnfolder]: 1619/2534 cut-off events. [2023-01-27 20:14:22,396 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-01-27 20:14:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 2534 events. 1619/2534 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12597 event pairs, 224 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9350. Up to 1584 conditions per place. [2023-01-27 20:14:22,410 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 78 selfloop transitions, 33 changer transitions 3/114 dead transitions. [2023-01-27 20:14:22,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 836 flow [2023-01-27 20:14:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1902 transitions. [2023-01-27 20:14:22,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35241801000555867 [2023-01-27 20:14:22,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1902 transitions. [2023-01-27 20:14:22,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1902 transitions. [2023-01-27 20:14:22,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:22,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1902 transitions. [2023-01-27 20:14:22,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 271.7142857142857) internal successors, (1902), 7 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:22,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:22,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:22,425 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 298 flow. Second operand 7 states and 1902 transitions. [2023-01-27 20:14:22,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 836 flow [2023-01-27 20:14:22,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 813 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:22,433 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 596 flow [2023-01-27 20:14:22,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-01-27 20:14:22,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-01-27 20:14:22,433 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 596 flow [2023-01-27 20:14:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:22,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:22,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:22,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:14:22,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:22,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1478770490, now seen corresponding path program 6 times [2023-01-27 20:14:22,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:22,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125387012] [2023-01-27 20:14:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:22,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:22,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:22,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125387012] [2023-01-27 20:14:22,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125387012] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:22,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811011415] [2023-01-27 20:14:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:22,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:22,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-27 20:14:22,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:22,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:22,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-27 20:14:22,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:23,283 INFO L130 PetriNetUnfolder]: 1623/2565 cut-off events. [2023-01-27 20:14:23,283 INFO L131 PetriNetUnfolder]: For 9351/9351 co-relation queries the response was YES. [2023-01-27 20:14:23,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2565 events. 1623/2565 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12669 event pairs, 490 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 11104. Up to 1223 conditions per place. [2023-01-27 20:14:23,297 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 92 selfloop transitions, 19 changer transitions 12/123 dead transitions. [2023-01-27 20:14:23,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1110 flow [2023-01-27 20:14:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-27 20:14:23,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-27 20:14:23,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-27 20:14:23,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-27 20:14:23,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:23,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-27 20:14:23,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:23,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:23,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:23,308 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 596 flow. Second operand 6 states and 1703 transitions. [2023-01-27 20:14:23,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1110 flow [2023-01-27 20:14:23,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1046 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:23,321 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 676 flow [2023-01-27 20:14:23,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-01-27 20:14:23,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-01-27 20:14:23,321 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 676 flow [2023-01-27 20:14:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:23,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:23,322 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:23,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:14:23,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:23,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash 337044488, now seen corresponding path program 7 times [2023-01-27 20:14:23,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:23,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413949090] [2023-01-27 20:14:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:23,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:23,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:23,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413949090] [2023-01-27 20:14:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413949090] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:23,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:23,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:23,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26735957] [2023-01-27 20:14:23,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:23,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:23,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:23,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:23,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:23,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:23,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:23,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:23,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:24,156 INFO L130 PetriNetUnfolder]: 1595/2508 cut-off events. [2023-01-27 20:14:24,156 INFO L131 PetriNetUnfolder]: For 10169/10169 co-relation queries the response was YES. [2023-01-27 20:14:24,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2508 events. 1595/2508 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12343 event pairs, 530 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 11416. Up to 1479 conditions per place. [2023-01-27 20:14:24,175 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 97 selfloop transitions, 29 changer transitions 15/141 dead transitions. [2023-01-27 20:14:24,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 1348 flow [2023-01-27 20:14:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2023-01-27 20:14:24,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-27 20:14:24,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2023-01-27 20:14:24,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2023-01-27 20:14:24,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:24,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2023-01-27 20:14:24,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:24,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:24,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:24,187 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 676 flow. Second operand 6 states and 1683 transitions. [2023-01-27 20:14:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 1348 flow [2023-01-27 20:14:24,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 1310 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:24,202 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 828 flow [2023-01-27 20:14:24,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-01-27 20:14:24,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-01-27 20:14:24,203 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 828 flow [2023-01-27 20:14:24,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:24,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:24,204 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:24,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:14:24,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:24,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -97285908, now seen corresponding path program 8 times [2023-01-27 20:14:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112586802] [2023-01-27 20:14:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:24,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:24,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112586802] [2023-01-27 20:14:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112586802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:24,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:24,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908587897] [2023-01-27 20:14:24,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:24,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:24,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:24,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-27 20:14:24,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:24,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:24,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-27 20:14:24,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:25,019 INFO L130 PetriNetUnfolder]: 1565/2439 cut-off events. [2023-01-27 20:14:25,020 INFO L131 PetriNetUnfolder]: For 10775/10775 co-relation queries the response was YES. [2023-01-27 20:14:25,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2439 events. 1565/2439 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11714 event pairs, 530 based on Foata normal form. 3/2096 useless extension candidates. Maximal degree in co-relation 11305. Up to 1479 conditions per place. [2023-01-27 20:14:25,032 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 91 selfloop transitions, 26 changer transitions 15/132 dead transitions. [2023-01-27 20:14:25,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1328 flow [2023-01-27 20:14:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-27 20:14:25,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-27 20:14:25,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-27 20:14:25,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-27 20:14:25,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:25,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-27 20:14:25,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,043 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 828 flow. Second operand 6 states and 1703 transitions. [2023-01-27 20:14:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1328 flow [2023-01-27 20:14:25,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1320 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:25,057 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 869 flow [2023-01-27 20:14:25,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-01-27 20:14:25,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-01-27 20:14:25,058 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 869 flow [2023-01-27 20:14:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:25,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:14:25,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:25,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:25,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1951623602, now seen corresponding path program 9 times [2023-01-27 20:14:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754955070] [2023-01-27 20:14:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:25,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:25,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754955070] [2023-01-27 20:14:25,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754955070] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:25,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:25,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:14:25,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526609219] [2023-01-27 20:14:25,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:25,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:14:25,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:14:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:14:25,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-27 20:14:25,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:25,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-27 20:14:25,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:25,793 INFO L130 PetriNetUnfolder]: 1537/2381 cut-off events. [2023-01-27 20:14:25,793 INFO L131 PetriNetUnfolder]: For 12541/12541 co-relation queries the response was YES. [2023-01-27 20:14:25,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2381 events. 1537/2381 cut-off events. For 12541/12541 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11179 event pairs, 484 based on Foata normal form. 3/2040 useless extension candidates. Maximal degree in co-relation 11510. Up to 1223 conditions per place. [2023-01-27 20:14:25,806 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 88 selfloop transitions, 26 changer transitions 12/126 dead transitions. [2023-01-27 20:14:25,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1333 flow [2023-01-27 20:14:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:14:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:14:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2023-01-27 20:14:25,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36770428015564205 [2023-01-27 20:14:25,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2023-01-27 20:14:25,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2023-01-27 20:14:25,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:25,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2023-01-27 20:14:25,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,819 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 869 flow. Second operand 6 states and 1701 transitions. [2023-01-27 20:14:25,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1333 flow [2023-01-27 20:14:25,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 1290 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:25,845 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 920 flow [2023-01-27 20:14:25,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-01-27 20:14:25,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-27 20:14:25,846 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 920 flow [2023-01-27 20:14:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:14:25,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:25,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1598507779, now seen corresponding path program 1 times [2023-01-27 20:14:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694258928] [2023-01-27 20:14:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:26,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:26,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694258928] [2023-01-27 20:14:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694258928] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:26,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:14:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215663375] [2023-01-27 20:14:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:26,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:26,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:26,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:26,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:26,763 INFO L130 PetriNetUnfolder]: 2107/3260 cut-off events. [2023-01-27 20:14:26,763 INFO L131 PetriNetUnfolder]: For 20971/20971 co-relation queries the response was YES. [2023-01-27 20:14:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 3260 events. 2107/3260 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16865 event pairs, 424 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 16075. Up to 1161 conditions per place. [2023-01-27 20:14:26,785 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 217 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-01-27 20:14:26,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 2960 flow [2023-01-27 20:14:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-01-27 20:14:26,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3731702797850658 [2023-01-27 20:14:26,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-01-27 20:14:26,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-01-27 20:14:26,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:26,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-01-27 20:14:26,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:26,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:26,797 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:26,797 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 920 flow. Second operand 7 states and 2014 transitions. [2023-01-27 20:14:26,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 2960 flow [2023-01-27 20:14:26,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 240 transitions, 2863 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:26,825 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 1212 flow [2023-01-27 20:14:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-01-27 20:14:26,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-01-27 20:14:26,826 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 1212 flow [2023-01-27 20:14:26,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:26,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:26,827 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:26,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:14:26,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:26,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1705182456, now seen corresponding path program 1 times [2023-01-27 20:14:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545129101] [2023-01-27 20:14:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:27,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545129101] [2023-01-27 20:14:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545129101] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:14:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207306778] [2023-01-27 20:14:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:27,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:27,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:27,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:27,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:27,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:27,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:27,704 INFO L130 PetriNetUnfolder]: 2345/3622 cut-off events. [2023-01-27 20:14:27,705 INFO L131 PetriNetUnfolder]: For 22615/22615 co-relation queries the response was YES. [2023-01-27 20:14:27,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3622 events. 2345/3622 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18662 event pairs, 320 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 18594. Up to 1578 conditions per place. [2023-01-27 20:14:27,730 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 143 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2023-01-27 20:14:27,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 2057 flow [2023-01-27 20:14:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:14:27,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:14:27,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:14:27,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:14:27,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:27,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:14:27,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:27,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:27,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:27,743 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 1212 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:14:27,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 2057 flow [2023-01-27 20:14:27,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 2007 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:27,788 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1404 flow [2023-01-27 20:14:27,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-01-27 20:14:27,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-01-27 20:14:27,789 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1404 flow [2023-01-27 20:14:27,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:27,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:27,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:27,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:14:27,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:27,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash 740274830, now seen corresponding path program 2 times [2023-01-27 20:14:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:27,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182453619] [2023-01-27 20:14:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182453619] [2023-01-27 20:14:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182453619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:28,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:28,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421512077] [2023-01-27 20:14:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:28,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:28,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1404 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:28,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:28,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:28,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:28,894 INFO L130 PetriNetUnfolder]: 2379/3710 cut-off events. [2023-01-27 20:14:28,894 INFO L131 PetriNetUnfolder]: For 32210/32210 co-relation queries the response was YES. [2023-01-27 20:14:28,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 3710 events. 2379/3710 cut-off events. For 32210/32210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19661 event pairs, 354 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 19709. Up to 1201 conditions per place. [2023-01-27 20:14:28,917 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 166 selfloop transitions, 88 changer transitions 3/257 dead transitions. [2023-01-27 20:14:28,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 257 transitions, 3337 flow [2023-01-27 20:14:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:14:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:14:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3064 transitions. [2023-01-27 20:14:28,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36127815116141965 [2023-01-27 20:14:28,922 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3064 transitions. [2023-01-27 20:14:28,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3064 transitions. [2023-01-27 20:14:28,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:28,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3064 transitions. [2023-01-27 20:14:28,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 278.54545454545456) internal successors, (3064), 11 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:28,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:28,934 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:28,934 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1404 flow. Second operand 11 states and 3064 transitions. [2023-01-27 20:14:28,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 257 transitions, 3337 flow [2023-01-27 20:14:28,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 3171 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:28,995 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2288 flow [2023-01-27 20:14:28,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2023-01-27 20:14:28,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-01-27 20:14:28,996 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2288 flow [2023-01-27 20:14:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:28,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:28,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:14:28,997 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:28,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1868110369, now seen corresponding path program 2 times [2023-01-27 20:14:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263755738] [2023-01-27 20:14:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:28,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:29,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263755738] [2023-01-27 20:14:29,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263755738] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:29,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:29,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:14:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146107425] [2023-01-27 20:14:29,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:29,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:29,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:29,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:29,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:29,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2288 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:29,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:29,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:30,005 INFO L130 PetriNetUnfolder]: 2632/4095 cut-off events. [2023-01-27 20:14:30,006 INFO L131 PetriNetUnfolder]: For 37908/37908 co-relation queries the response was YES. [2023-01-27 20:14:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 4095 events. 2632/4095 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21943 event pairs, 360 based on Foata normal form. 10/4005 useless extension candidates. Maximal degree in co-relation 23483. Up to 1949 conditions per place. [2023-01-27 20:14:30,033 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 170 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2023-01-27 20:14:30,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 232 transitions, 3301 flow [2023-01-27 20:14:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-27 20:14:30,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-27 20:14:30,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-27 20:14:30,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-27 20:14:30,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:30,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-27 20:14:30,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:30,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:30,043 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:30,043 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2288 flow. Second operand 7 states and 1961 transitions. [2023-01-27 20:14:30,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 232 transitions, 3301 flow [2023-01-27 20:14:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3149 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-27 20:14:30,181 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 2422 flow [2023-01-27 20:14:30,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2023-01-27 20:14:30,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-01-27 20:14:30,183 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 2422 flow [2023-01-27 20:14:30,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:30,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:30,183 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:14:30,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:30,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -88271522, now seen corresponding path program 3 times [2023-01-27 20:14:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:30,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378739099] [2023-01-27 20:14:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378739099] [2023-01-27 20:14:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378739099] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:30,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543075445] [2023-01-27 20:14:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:30,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:30,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:30,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:30,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:30,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:31,207 INFO L130 PetriNetUnfolder]: 2656/4141 cut-off events. [2023-01-27 20:14:31,207 INFO L131 PetriNetUnfolder]: For 44803/44803 co-relation queries the response was YES. [2023-01-27 20:14:31,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 4141 events. 2656/4141 cut-off events. For 44803/44803 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22373 event pairs, 510 based on Foata normal form. 8/4049 useless extension candidates. Maximal degree in co-relation 23867. Up to 1987 conditions per place. [2023-01-27 20:14:31,236 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 239 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2023-01-27 20:14:31,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 4336 flow [2023-01-27 20:14:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:14:31,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:14:31,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:14:31,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:14:31,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:31,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:14:31,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:31,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:31,246 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:31,246 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 2422 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:14:31,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 4336 flow [2023-01-27 20:14:31,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 4206 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:31,330 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 2637 flow [2023-01-27 20:14:31,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2023-01-27 20:14:31,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2023-01-27 20:14:31,331 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 2637 flow [2023-01-27 20:14:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:31,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:31,332 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:31,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 20:14:31,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:31,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1399279322, now seen corresponding path program 4 times [2023-01-27 20:14:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:31,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843206379] [2023-01-27 20:14:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843206379] [2023-01-27 20:14:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843206379] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616364524] [2023-01-27 20:14:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:31,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:31,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 2637 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:31,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:31,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:32,313 INFO L130 PetriNetUnfolder]: 2650/4135 cut-off events. [2023-01-27 20:14:32,313 INFO L131 PetriNetUnfolder]: For 44143/44143 co-relation queries the response was YES. [2023-01-27 20:14:32,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24232 conditions, 4135 events. 2650/4135 cut-off events. For 44143/44143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22382 event pairs, 508 based on Foata normal form. 6/4041 useless extension candidates. Maximal degree in co-relation 24163. Up to 1987 conditions per place. [2023-01-27 20:14:32,342 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 229 selfloop transitions, 44 changer transitions 8/281 dead transitions. [2023-01-27 20:14:32,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 281 transitions, 4328 flow [2023-01-27 20:14:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-27 20:14:32,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-27 20:14:32,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-27 20:14:32,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-27 20:14:32,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:32,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-27 20:14:32,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,352 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,352 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 2637 flow. Second operand 7 states and 2000 transitions. [2023-01-27 20:14:32,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 281 transitions, 4328 flow [2023-01-27 20:14:32,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 4232 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:32,439 INFO L231 Difference]: Finished difference. Result has 136 places, 173 transitions, 2668 flow [2023-01-27 20:14:32,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2668, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2023-01-27 20:14:32,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-01-27 20:14:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 2668 flow [2023-01-27 20:14:32,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:32,440 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 20:14:32,440 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:32,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1257207031, now seen corresponding path program 3 times [2023-01-27 20:14:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998226421] [2023-01-27 20:14:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998226421] [2023-01-27 20:14:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998226421] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:32,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:32,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195484041] [2023-01-27 20:14:32,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:32,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:32,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:33,385 INFO L130 PetriNetUnfolder]: 2661/4150 cut-off events. [2023-01-27 20:14:33,385 INFO L131 PetriNetUnfolder]: For 45163/45163 co-relation queries the response was YES. [2023-01-27 20:14:33,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 4150 events. 2661/4150 cut-off events. For 45163/45163 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22466 event pairs, 480 based on Foata normal form. 10/4060 useless extension candidates. Maximal degree in co-relation 24403. Up to 1724 conditions per place. [2023-01-27 20:14:33,415 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 251 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2023-01-27 20:14:33,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 293 transitions, 4464 flow [2023-01-27 20:14:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-27 20:14:33,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-27 20:14:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-27 20:14:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-27 20:14:33,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:33,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-27 20:14:33,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:33,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:33,424 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:33,424 INFO L175 Difference]: Start difference. First operand has 136 places, 173 transitions, 2668 flow. Second operand 7 states and 2009 transitions. [2023-01-27 20:14:33,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 293 transitions, 4464 flow [2023-01-27 20:14:33,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 293 transitions, 4372 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:33,509 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2689 flow [2023-01-27 20:14:33,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2023-01-27 20:14:33,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-01-27 20:14:33,510 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2689 flow [2023-01-27 20:14:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:33,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:33,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:33,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:14:33,511 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:33,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1947204471, now seen corresponding path program 4 times [2023-01-27 20:14:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647742732] [2023-01-27 20:14:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647742732] [2023-01-27 20:14:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647742732] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635469765] [2023-01-27 20:14:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:33,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:33,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2689 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:33,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:33,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:33,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:34,523 INFO L130 PetriNetUnfolder]: 2661/4149 cut-off events. [2023-01-27 20:14:34,523 INFO L131 PetriNetUnfolder]: For 45314/45314 co-relation queries the response was YES. [2023-01-27 20:14:34,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 4149 events. 2661/4149 cut-off events. For 45314/45314 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22461 event pairs, 476 based on Foata normal form. 10/4063 useless extension candidates. Maximal degree in co-relation 24355. Up to 1724 conditions per place. [2023-01-27 20:14:34,556 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 249 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2023-01-27 20:14:34,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 288 transitions, 4422 flow [2023-01-27 20:14:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:14:34,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:14:34,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:14:34,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:14:34,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:34,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:14:34,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,564 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2689 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:14:34,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 288 transitions, 4422 flow [2023-01-27 20:14:34,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 288 transitions, 4337 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-27 20:14:34,645 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 2687 flow [2023-01-27 20:14:34,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2023-01-27 20:14:34,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2023-01-27 20:14:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 2687 flow [2023-01-27 20:14:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:34,646 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:14:34,646 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:34,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:34,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1948393763, now seen corresponding path program 5 times [2023-01-27 20:14:34,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859298563] [2023-01-27 20:14:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859298563] [2023-01-27 20:14:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859298563] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063198393] [2023-01-27 20:14:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:34,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:34,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 2687 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:34,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:34,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:35,613 INFO L130 PetriNetUnfolder]: 2828/4578 cut-off events. [2023-01-27 20:14:35,613 INFO L131 PetriNetUnfolder]: For 48786/48786 co-relation queries the response was YES. [2023-01-27 20:14:35,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26522 conditions, 4578 events. 2828/4578 cut-off events. For 48786/48786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26803 event pairs, 442 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 26450. Up to 1336 conditions per place. [2023-01-27 20:14:35,647 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 240 selfloop transitions, 59 changer transitions 1/300 dead transitions. [2023-01-27 20:14:35,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 300 transitions, 4672 flow [2023-01-27 20:14:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-27 20:14:35,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-27 20:14:35,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-27 20:14:35,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-27 20:14:35,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:35,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-27 20:14:35,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:35,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:35,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:35,653 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 2687 flow. Second operand 7 states and 1961 transitions. [2023-01-27 20:14:35,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 300 transitions, 4672 flow [2023-01-27 20:14:35,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 300 transitions, 4523 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-01-27 20:14:35,763 INFO L231 Difference]: Finished difference. Result has 147 places, 187 transitions, 3009 flow [2023-01-27 20:14:35,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3009, PETRI_PLACES=147, PETRI_TRANSITIONS=187} [2023-01-27 20:14:35,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-27 20:14:35,764 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 187 transitions, 3009 flow [2023-01-27 20:14:35,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:35,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:35,764 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:35,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:14:35,764 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:35,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash 858781202, now seen corresponding path program 5 times [2023-01-27 20:14:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474219501] [2023-01-27 20:14:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474219501] [2023-01-27 20:14:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474219501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:35,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:35,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869722802] [2023-01-27 20:14:35,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:35,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:35,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:35,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 187 transitions, 3009 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:35,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:35,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:35,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:36,797 INFO L130 PetriNetUnfolder]: 2809/4541 cut-off events. [2023-01-27 20:14:36,797 INFO L131 PetriNetUnfolder]: For 55597/55597 co-relation queries the response was YES. [2023-01-27 20:14:36,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26850 conditions, 4541 events. 2809/4541 cut-off events. For 55597/55597 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26350 event pairs, 604 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 26775. Up to 2441 conditions per place. [2023-01-27 20:14:36,832 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 240 selfloop transitions, 40 changer transitions 6/286 dead transitions. [2023-01-27 20:14:36,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 4578 flow [2023-01-27 20:14:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-27 20:14:36,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-27 20:14:36,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-27 20:14:36,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-27 20:14:36,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:36,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-27 20:14:36,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:36,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:36,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:36,839 INFO L175 Difference]: Start difference. First operand has 147 places, 187 transitions, 3009 flow. Second operand 7 states and 1999 transitions. [2023-01-27 20:14:36,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 4578 flow [2023-01-27 20:14:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 4443 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-27 20:14:36,992 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2934 flow [2023-01-27 20:14:36,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2934, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2023-01-27 20:14:36,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-27 20:14:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2934 flow [2023-01-27 20:14:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:36,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:14:36,993 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:36,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 454415150, now seen corresponding path program 6 times [2023-01-27 20:14:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958374380] [2023-01-27 20:14:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:37,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958374380] [2023-01-27 20:14:37,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958374380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:37,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:37,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:37,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836757739] [2023-01-27 20:14:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:37,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:37,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2934 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:37,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:37,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:37,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:38,373 INFO L130 PetriNetUnfolder]: 3872/6304 cut-off events. [2023-01-27 20:14:38,373 INFO L131 PetriNetUnfolder]: For 65432/65432 co-relation queries the response was YES. [2023-01-27 20:14:38,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 6304 events. 3872/6304 cut-off events. For 65432/65432 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39152 event pairs, 431 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 35890. Up to 3505 conditions per place. [2023-01-27 20:14:38,412 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 297 selfloop transitions, 52 changer transitions 2/351 dead transitions. [2023-01-27 20:14:38,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 351 transitions, 5855 flow [2023-01-27 20:14:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:14:38,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:14:38,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:14:38,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:14:38,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:38,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:14:38,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:38,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:38,419 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:38,419 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2934 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:14:38,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 351 transitions, 5855 flow [2023-01-27 20:14:38,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 351 transitions, 5697 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-27 20:14:38,612 INFO L231 Difference]: Finished difference. Result has 152 places, 214 transitions, 3601 flow [2023-01-27 20:14:38,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3601, PETRI_PLACES=152, PETRI_TRANSITIONS=214} [2023-01-27 20:14:38,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-01-27 20:14:38,612 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 214 transitions, 3601 flow [2023-01-27 20:14:38,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:38,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:38,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:38,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:14:38,613 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:38,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 898739619, now seen corresponding path program 6 times [2023-01-27 20:14:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:38,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989770292] [2023-01-27 20:14:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:38,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989770292] [2023-01-27 20:14:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989770292] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:38,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:38,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663817191] [2023-01-27 20:14:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:38,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:38,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 214 transitions, 3601 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:38,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:38,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:38,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:39,974 INFO L130 PetriNetUnfolder]: 4122/6774 cut-off events. [2023-01-27 20:14:39,975 INFO L131 PetriNetUnfolder]: For 82006/82006 co-relation queries the response was YES. [2023-01-27 20:14:40,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40124 conditions, 6774 events. 4122/6774 cut-off events. For 82006/82006 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43419 event pairs, 730 based on Foata normal form. 10/6692 useless extension candidates. Maximal degree in co-relation 40045. Up to 3909 conditions per place. [2023-01-27 20:14:40,022 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 268 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2023-01-27 20:14:40,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 5986 flow [2023-01-27 20:14:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2023-01-27 20:14:40,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639058736335001 [2023-01-27 20:14:40,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2023-01-27 20:14:40,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2023-01-27 20:14:40,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:40,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2023-01-27 20:14:40,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:40,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:40,028 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:40,028 INFO L175 Difference]: Start difference. First operand has 152 places, 214 transitions, 3601 flow. Second operand 7 states and 1964 transitions. [2023-01-27 20:14:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 5986 flow [2023-01-27 20:14:40,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 351 transitions, 5934 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-27 20:14:40,293 INFO L231 Difference]: Finished difference. Result has 161 places, 242 transitions, 4411 flow [2023-01-27 20:14:40,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=161, PETRI_TRANSITIONS=242} [2023-01-27 20:14:40,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-01-27 20:14:40,293 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 242 transitions, 4411 flow [2023-01-27 20:14:40,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:40,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:40,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:14:40,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:40,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1280703030, now seen corresponding path program 7 times [2023-01-27 20:14:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215113285] [2023-01-27 20:14:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:40,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215113285] [2023-01-27 20:14:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215113285] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:40,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191766994] [2023-01-27 20:14:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:40,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:14:40,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 242 transitions, 4411 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:40,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:40,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:14:40,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:41,978 INFO L130 PetriNetUnfolder]: 4524/7452 cut-off events. [2023-01-27 20:14:41,979 INFO L131 PetriNetUnfolder]: For 100360/100360 co-relation queries the response was YES. [2023-01-27 20:14:42,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45761 conditions, 7452 events. 4524/7452 cut-off events. For 100360/100360 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48824 event pairs, 425 based on Foata normal form. 16/7372 useless extension candidates. Maximal degree in co-relation 45678. Up to 3171 conditions per place. [2023-01-27 20:14:42,039 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 348 selfloop transitions, 129 changer transitions 1/478 dead transitions. [2023-01-27 20:14:42,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 478 transitions, 8384 flow [2023-01-27 20:14:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:14:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:14:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2526 transitions. [2023-01-27 20:14:42,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640293990488543 [2023-01-27 20:14:42,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2526 transitions. [2023-01-27 20:14:42,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2526 transitions. [2023-01-27 20:14:42,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:42,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2526 transitions. [2023-01-27 20:14:42,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.6666666666667) internal successors, (2526), 9 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:42,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:42,047 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:42,047 INFO L175 Difference]: Start difference. First operand has 161 places, 242 transitions, 4411 flow. Second operand 9 states and 2526 transitions. [2023-01-27 20:14:42,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 478 transitions, 8384 flow [2023-01-27 20:14:42,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 8253 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:42,467 INFO L231 Difference]: Finished difference. Result has 174 places, 311 transitions, 5926 flow [2023-01-27 20:14:42,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5926, PETRI_PLACES=174, PETRI_TRANSITIONS=311} [2023-01-27 20:14:42,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-27 20:14:42,468 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 311 transitions, 5926 flow [2023-01-27 20:14:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:42,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:42,468 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:42,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 20:14:42,468 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:42,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -669426035, now seen corresponding path program 7 times [2023-01-27 20:14:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538160022] [2023-01-27 20:14:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538160022] [2023-01-27 20:14:42,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538160022] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:42,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:42,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:42,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346206952] [2023-01-27 20:14:42,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:42,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:42,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:42,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:42,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:42,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 311 transitions, 5926 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:42,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:42,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:42,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:44,103 INFO L130 PetriNetUnfolder]: 4520/7448 cut-off events. [2023-01-27 20:14:44,103 INFO L131 PetriNetUnfolder]: For 114626/114626 co-relation queries the response was YES. [2023-01-27 20:14:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 7448 events. 4520/7448 cut-off events. For 114626/114626 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48656 event pairs, 842 based on Foata normal form. 4/7356 useless extension candidates. Maximal degree in co-relation 49324. Up to 4512 conditions per place. [2023-01-27 20:14:44,155 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 300 selfloop transitions, 100 changer transitions 5/405 dead transitions. [2023-01-27 20:14:44,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 405 transitions, 7731 flow [2023-01-27 20:14:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-27 20:14:44,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-27 20:14:44,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-27 20:14:44,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-27 20:14:44,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:44,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-27 20:14:44,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:44,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:44,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:44,162 INFO L175 Difference]: Start difference. First operand has 174 places, 311 transitions, 5926 flow. Second operand 7 states and 1996 transitions. [2023-01-27 20:14:44,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 405 transitions, 7731 flow [2023-01-27 20:14:44,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 405 transitions, 7661 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-27 20:14:44,573 INFO L231 Difference]: Finished difference. Result has 181 places, 312 transitions, 6097 flow [2023-01-27 20:14:44,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6097, PETRI_PLACES=181, PETRI_TRANSITIONS=312} [2023-01-27 20:14:44,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-01-27 20:14:44,573 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 312 transitions, 6097 flow [2023-01-27 20:14:44,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:44,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:44,574 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:44,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-27 20:14:44,574 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:44,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash 502177370, now seen corresponding path program 8 times [2023-01-27 20:14:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629917292] [2023-01-27 20:14:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:44,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629917292] [2023-01-27 20:14:44,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629917292] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:44,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:44,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:44,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587399688] [2023-01-27 20:14:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:44,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:44,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:44,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 312 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:44,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:44,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:44,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:46,225 INFO L130 PetriNetUnfolder]: 4576/7658 cut-off events. [2023-01-27 20:14:46,225 INFO L131 PetriNetUnfolder]: For 121527/121527 co-relation queries the response was YES. [2023-01-27 20:14:46,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51369 conditions, 7658 events. 4576/7658 cut-off events. For 121527/121527 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51388 event pairs, 756 based on Foata normal form. 16/7578 useless extension candidates. Maximal degree in co-relation 51278. Up to 3836 conditions per place. [2023-01-27 20:14:46,284 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 86 changer transitions 1/425 dead transitions. [2023-01-27 20:14:46,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 425 transitions, 8217 flow [2023-01-27 20:14:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:14:46,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:14:46,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:14:46,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:14:46,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:46,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:14:46,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:46,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:46,290 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:46,291 INFO L175 Difference]: Start difference. First operand has 181 places, 312 transitions, 6097 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:14:46,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 425 transitions, 8217 flow [2023-01-27 20:14:46,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 425 transitions, 8053 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:46,836 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 6275 flow [2023-01-27 20:14:46,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6275, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2023-01-27 20:14:46,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-01-27 20:14:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 6275 flow [2023-01-27 20:14:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:46,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:46,837 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-27 20:14:46,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:46,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 703973021, now seen corresponding path program 8 times [2023-01-27 20:14:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649639091] [2023-01-27 20:14:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649639091] [2023-01-27 20:14:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649639091] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:47,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113445364] [2023-01-27 20:14:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:47,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:47,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 6275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:47,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:47,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:47,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:48,711 INFO L130 PetriNetUnfolder]: 4628/7834 cut-off events. [2023-01-27 20:14:48,711 INFO L131 PetriNetUnfolder]: For 127980/127980 co-relation queries the response was YES. [2023-01-27 20:14:48,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52757 conditions, 7834 events. 4628/7834 cut-off events. For 127980/127980 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53588 event pairs, 1040 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 52663. Up to 4710 conditions per place. [2023-01-27 20:14:48,780 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 323 selfloop transitions, 121 changer transitions 4/448 dead transitions. [2023-01-27 20:14:48,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 8796 flow [2023-01-27 20:14:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-27 20:14:48,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-27 20:14:48,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-27 20:14:48,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-27 20:14:48,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:48,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-27 20:14:48,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:48,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:48,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:48,787 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 6275 flow. Second operand 7 states and 1999 transitions. [2023-01-27 20:14:48,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 8796 flow [2023-01-27 20:14:49,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 8578 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:49,430 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 6759 flow [2023-01-27 20:14:49,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2023-01-27 20:14:49,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-01-27 20:14:49,430 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 6759 flow [2023-01-27 20:14:49,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:49,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:49,431 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-27 20:14:49,431 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:49,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash -171246378, now seen corresponding path program 9 times [2023-01-27 20:14:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377429602] [2023-01-27 20:14:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:49,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377429602] [2023-01-27 20:14:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377429602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330763789] [2023-01-27 20:14:49,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:49,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:49,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 6759 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:49,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:49,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:51,337 INFO L130 PetriNetUnfolder]: 4941/8391 cut-off events. [2023-01-27 20:14:51,337 INFO L131 PetriNetUnfolder]: For 140156/140156 co-relation queries the response was YES. [2023-01-27 20:14:51,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56837 conditions, 8391 events. 4941/8391 cut-off events. For 140156/140156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 58371 event pairs, 982 based on Foata normal form. 8/8303 useless extension candidates. Maximal degree in co-relation 56739. Up to 2647 conditions per place. [2023-01-27 20:14:51,404 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 370 selfloop transitions, 115 changer transitions 0/485 dead transitions. [2023-01-27 20:14:51,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 9743 flow [2023-01-27 20:14:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:14:51,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:14:51,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:14:51,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:14:51,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:51,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:14:51,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:51,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:51,411 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:51,411 INFO L175 Difference]: Start difference. First operand has 193 places, 337 transitions, 6759 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:14:51,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 9743 flow [2023-01-27 20:14:52,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 485 transitions, 9661 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-27 20:14:52,064 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 7310 flow [2023-01-27 20:14:52,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2023-01-27 20:14:52,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-01-27 20:14:52,065 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 7310 flow [2023-01-27 20:14:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:52,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:52,066 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:52,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-27 20:14:52,066 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:52,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1404101974, now seen corresponding path program 10 times [2023-01-27 20:14:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:52,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11630041] [2023-01-27 20:14:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:52,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11630041] [2023-01-27 20:14:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11630041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:52,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:14:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413166751] [2023-01-27 20:14:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:52,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:14:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:14:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:14:52,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:52,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 7310 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:52,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:52,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:52,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:54,117 INFO L130 PetriNetUnfolder]: 4910/8324 cut-off events. [2023-01-27 20:14:54,117 INFO L131 PetriNetUnfolder]: For 150792/150792 co-relation queries the response was YES. [2023-01-27 20:14:54,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57296 conditions, 8324 events. 4910/8324 cut-off events. For 150792/150792 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 57633 event pairs, 968 based on Foata normal form. 12/8240 useless extension candidates. Maximal degree in co-relation 57196. Up to 4569 conditions per place. [2023-01-27 20:14:54,202 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 122 changer transitions 0/460 dead transitions. [2023-01-27 20:14:54,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 460 transitions, 9542 flow [2023-01-27 20:14:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-27 20:14:54,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-27 20:14:54,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-27 20:14:54,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-27 20:14:54,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:54,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-27 20:14:54,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:54,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:54,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:54,210 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 7310 flow. Second operand 7 states and 2003 transitions. [2023-01-27 20:14:54,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 460 transitions, 9542 flow [2023-01-27 20:14:55,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 460 transitions, 9240 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-27 20:14:55,077 INFO L231 Difference]: Finished difference. Result has 202 places, 350 transitions, 7275 flow [2023-01-27 20:14:55,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7022, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7275, PETRI_PLACES=202, PETRI_TRANSITIONS=350} [2023-01-27 20:14:55,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-27 20:14:55,077 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 350 transitions, 7275 flow [2023-01-27 20:14:55,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:55,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:55,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:55,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-27 20:14:55,078 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:55,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash 239437526, now seen corresponding path program 11 times [2023-01-27 20:14:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928319501] [2023-01-27 20:14:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928319501] [2023-01-27 20:14:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928319501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:55,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732476738] [2023-01-27 20:14:55,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:55,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:55,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:55,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 350 transitions, 7275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:55,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:55,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:55,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:56,930 INFO L130 PetriNetUnfolder]: 4894/8294 cut-off events. [2023-01-27 20:14:56,931 INFO L131 PetriNetUnfolder]: For 146763/146763 co-relation queries the response was YES. [2023-01-27 20:14:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57092 conditions, 8294 events. 4894/8294 cut-off events. For 146763/146763 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57422 event pairs, 968 based on Foata normal form. 6/8204 useless extension candidates. Maximal degree in co-relation 56991. Up to 4569 conditions per place. [2023-01-27 20:14:57,004 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 346 selfloop transitions, 103 changer transitions 6/455 dead transitions. [2023-01-27 20:14:57,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 455 transitions, 9438 flow [2023-01-27 20:14:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:14:57,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:14:57,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:14:57,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:14:57,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:57,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:14:57,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:57,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:57,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:57,011 INFO L175 Difference]: Start difference. First operand has 202 places, 350 transitions, 7275 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:14:57,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 455 transitions, 9438 flow [2023-01-27 20:14:57,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 455 transitions, 9312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:14:57,716 INFO L231 Difference]: Finished difference. Result has 206 places, 349 transitions, 7347 flow [2023-01-27 20:14:57,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7347, PETRI_PLACES=206, PETRI_TRANSITIONS=349} [2023-01-27 20:14:57,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-27 20:14:57,717 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 349 transitions, 7347 flow [2023-01-27 20:14:57,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:57,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:57,718 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:57,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-27 20:14:57,718 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:57,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash -42669151, now seen corresponding path program 9 times [2023-01-27 20:14:57,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:57,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048543329] [2023-01-27 20:14:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:57,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:14:57,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048543329] [2023-01-27 20:14:57,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048543329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:14:57,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:14:57,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:14:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313270289] [2023-01-27 20:14:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:14:57,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:14:57,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:14:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:14:57,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:14:57,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 349 transitions, 7347 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:57,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:57,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:14:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:59,667 INFO L130 PetriNetUnfolder]: 4881/8263 cut-off events. [2023-01-27 20:14:59,667 INFO L131 PetriNetUnfolder]: For 150786/150786 co-relation queries the response was YES. [2023-01-27 20:14:59,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57088 conditions, 8263 events. 4881/8263 cut-off events. For 150786/150786 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56989 event pairs, 1152 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 56986. Up to 5372 conditions per place. [2023-01-27 20:14:59,742 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 322 selfloop transitions, 115 changer transitions 4/441 dead transitions. [2023-01-27 20:14:59,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 441 transitions, 9271 flow [2023-01-27 20:14:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:14:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:14:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:14:59,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:14:59,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:14:59,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:14:59,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:59,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:14:59,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:59,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:59,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:59,748 INFO L175 Difference]: Start difference. First operand has 206 places, 349 transitions, 7347 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:14:59,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 441 transitions, 9271 flow [2023-01-27 20:15:00,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 441 transitions, 9053 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-27 20:15:00,442 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 7309 flow [2023-01-27 20:15:00,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7309, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2023-01-27 20:15:00,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-27 20:15:00,443 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 7309 flow [2023-01-27 20:15:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:00,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:00,443 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:00,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-27 20:15:00,444 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:00,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 416811670, now seen corresponding path program 12 times [2023-01-27 20:15:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724542184] [2023-01-27 20:15:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:00,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724542184] [2023-01-27 20:15:00,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724542184] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:00,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:00,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:00,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803775991] [2023-01-27 20:15:00,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:00,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:00,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:00,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 7309 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:00,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:00,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:00,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:02,310 INFO L130 PetriNetUnfolder]: 4862/8226 cut-off events. [2023-01-27 20:15:02,310 INFO L131 PetriNetUnfolder]: For 155431/155431 co-relation queries the response was YES. [2023-01-27 20:15:02,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56919 conditions, 8226 events. 4862/8226 cut-off events. For 155431/155431 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56586 event pairs, 1190 based on Foata normal form. 6/8136 useless extension candidates. Maximal degree in co-relation 56817. Up to 5371 conditions per place. [2023-01-27 20:15:02,388 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 302 selfloop transitions, 156 changer transitions 9/467 dead transitions. [2023-01-27 20:15:02,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 467 transitions, 9773 flow [2023-01-27 20:15:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-27 20:15:02,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-27 20:15:02,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-27 20:15:02,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-27 20:15:02,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:02,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-27 20:15:02,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:02,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:02,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:02,406 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 7309 flow. Second operand 7 states and 2005 transitions. [2023-01-27 20:15:02,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 467 transitions, 9773 flow [2023-01-27 20:15:03,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 467 transitions, 9524 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:03,098 INFO L231 Difference]: Finished difference. Result has 212 places, 378 transitions, 8062 flow [2023-01-27 20:15:03,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8062, PETRI_PLACES=212, PETRI_TRANSITIONS=378} [2023-01-27 20:15:03,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-01-27 20:15:03,098 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 378 transitions, 8062 flow [2023-01-27 20:15:03,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:03,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:03,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-27 20:15:03,100 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:03,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801734, now seen corresponding path program 13 times [2023-01-27 20:15:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:03,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006751489] [2023-01-27 20:15:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006751489] [2023-01-27 20:15:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006751489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:03,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:03,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031532797] [2023-01-27 20:15:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:03,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:03,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 378 transitions, 8062 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:03,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:03,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:05,230 INFO L130 PetriNetUnfolder]: 4992/8454 cut-off events. [2023-01-27 20:15:05,230 INFO L131 PetriNetUnfolder]: For 161899/161899 co-relation queries the response was YES. [2023-01-27 20:15:05,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59136 conditions, 8454 events. 4992/8454 cut-off events. For 161899/161899 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 58535 event pairs, 1252 based on Foata normal form. 4/8362 useless extension candidates. Maximal degree in co-relation 59030. Up to 5391 conditions per place. [2023-01-27 20:15:05,307 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 312 selfloop transitions, 168 changer transitions 0/480 dead transitions. [2023-01-27 20:15:05,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 480 transitions, 10297 flow [2023-01-27 20:15:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-27 20:15:05,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-27 20:15:05,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-27 20:15:05,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-27 20:15:05,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:05,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-27 20:15:05,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:05,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:05,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:05,314 INFO L175 Difference]: Start difference. First operand has 212 places, 378 transitions, 8062 flow. Second operand 7 states and 2012 transitions. [2023-01-27 20:15:05,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 480 transitions, 10297 flow [2023-01-27 20:15:06,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 480 transitions, 10124 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-01-27 20:15:06,073 INFO L231 Difference]: Finished difference. Result has 216 places, 401 transitions, 8888 flow [2023-01-27 20:15:06,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8888, PETRI_PLACES=216, PETRI_TRANSITIONS=401} [2023-01-27 20:15:06,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-01-27 20:15:06,073 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 401 transitions, 8888 flow [2023-01-27 20:15:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:06,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:06,074 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-27 20:15:06,074 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:06,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1390050419, now seen corresponding path program 10 times [2023-01-27 20:15:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:06,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447297959] [2023-01-27 20:15:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:06,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:06,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447297959] [2023-01-27 20:15:06,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447297959] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:06,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:06,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:06,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841234603] [2023-01-27 20:15:06,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:06,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:06,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:06,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:06,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:06,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 401 transitions, 8888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:06,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:06,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:06,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:08,185 INFO L130 PetriNetUnfolder]: 5266/8922 cut-off events. [2023-01-27 20:15:08,186 INFO L131 PetriNetUnfolder]: For 174951/174951 co-relation queries the response was YES. [2023-01-27 20:15:08,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62264 conditions, 8922 events. 5266/8922 cut-off events. For 174951/174951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62359 event pairs, 1192 based on Foata normal form. 32/8858 useless extension candidates. Maximal degree in co-relation 62158. Up to 3078 conditions per place. [2023-01-27 20:15:08,267 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 357 selfloop transitions, 170 changer transitions 0/527 dead transitions. [2023-01-27 20:15:08,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 527 transitions, 11557 flow [2023-01-27 20:15:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-01-27 20:15:08,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735408560311284 [2023-01-27 20:15:08,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-01-27 20:15:08,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-01-27 20:15:08,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:08,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-01-27 20:15:08,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:08,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:08,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:08,274 INFO L175 Difference]: Start difference. First operand has 216 places, 401 transitions, 8888 flow. Second operand 7 states and 2016 transitions. [2023-01-27 20:15:08,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 527 transitions, 11557 flow [2023-01-27 20:15:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 11304 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:09,056 INFO L231 Difference]: Finished difference. Result has 222 places, 417 transitions, 9581 flow [2023-01-27 20:15:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9581, PETRI_PLACES=222, PETRI_TRANSITIONS=417} [2023-01-27 20:15:09,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-01-27 20:15:09,057 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 417 transitions, 9581 flow [2023-01-27 20:15:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:09,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:09,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-27 20:15:09,057 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:09,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash -946825859, now seen corresponding path program 11 times [2023-01-27 20:15:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315611815] [2023-01-27 20:15:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315611815] [2023-01-27 20:15:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315611815] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:09,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879033092] [2023-01-27 20:15:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:09,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:15:09,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 417 transitions, 9581 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:09,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:09,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:15:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:11,324 INFO L130 PetriNetUnfolder]: 5624/9630 cut-off events. [2023-01-27 20:15:11,324 INFO L131 PetriNetUnfolder]: For 198065/198065 co-relation queries the response was YES. [2023-01-27 20:15:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67506 conditions, 9630 events. 5624/9630 cut-off events. For 198065/198065 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69377 event pairs, 1112 based on Foata normal form. 8/9542 useless extension candidates. Maximal degree in co-relation 67398. Up to 3378 conditions per place. [2023-01-27 20:15:11,414 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 368 selfloop transitions, 222 changer transitions 0/590 dead transitions. [2023-01-27 20:15:11,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 590 transitions, 13343 flow [2023-01-27 20:15:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1973 transitions. [2023-01-27 20:15:11,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655734667407819 [2023-01-27 20:15:11,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1973 transitions. [2023-01-27 20:15:11,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1973 transitions. [2023-01-27 20:15:11,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:11,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1973 transitions. [2023-01-27 20:15:11,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:11,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:11,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:11,421 INFO L175 Difference]: Start difference. First operand has 222 places, 417 transitions, 9581 flow. Second operand 7 states and 1973 transitions. [2023-01-27 20:15:11,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 590 transitions, 13343 flow [2023-01-27 20:15:12,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 590 transitions, 12937 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:12,363 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 10573 flow [2023-01-27 20:15:12,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10573, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2023-01-27 20:15:12,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-01-27 20:15:12,363 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 10573 flow [2023-01-27 20:15:12,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:12,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:12,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:12,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-27 20:15:12,364 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:12,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794718, now seen corresponding path program 14 times [2023-01-27 20:15:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:12,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377918377] [2023-01-27 20:15:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:12,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377918377] [2023-01-27 20:15:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377918377] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:12,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:12,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583829232] [2023-01-27 20:15:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:12,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:12,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:12,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 10573 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:12,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:12,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:12,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:14,923 INFO L130 PetriNetUnfolder]: 5618/9624 cut-off events. [2023-01-27 20:15:14,923 INFO L131 PetriNetUnfolder]: For 210069/210069 co-relation queries the response was YES. [2023-01-27 20:15:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69222 conditions, 9624 events. 5618/9624 cut-off events. For 210069/210069 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69241 event pairs, 1416 based on Foata normal form. 6/9536 useless extension candidates. Maximal degree in co-relation 69110. Up to 6511 conditions per place. [2023-01-27 20:15:15,007 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 193 changer transitions 8/534 dead transitions. [2023-01-27 20:15:15,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 534 transitions, 12280 flow [2023-01-27 20:15:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-27 20:15:15,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-27 20:15:15,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-27 20:15:15,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-27 20:15:15,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:15,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-27 20:15:15,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:15,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:15,013 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 10573 flow. Second operand 7 states and 2009 transitions. [2023-01-27 20:15:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 534 transitions, 12280 flow [2023-01-27 20:15:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 534 transitions, 12155 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-27 20:15:16,051 INFO L231 Difference]: Finished difference. Result has 234 places, 454 transitions, 10750 flow [2023-01-27 20:15:16,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10750, PETRI_PLACES=234, PETRI_TRANSITIONS=454} [2023-01-27 20:15:16,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-01-27 20:15:16,052 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 454 transitions, 10750 flow [2023-01-27 20:15:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:16,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:16,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-27 20:15:16,052 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:16,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1382716463, now seen corresponding path program 12 times [2023-01-27 20:15:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:16,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718842117] [2023-01-27 20:15:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:16,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:16,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718842117] [2023-01-27 20:15:16,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718842117] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:16,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:16,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:16,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657399820] [2023-01-27 20:15:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:16,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:16,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:16,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:16,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 454 transitions, 10750 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:16,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:16,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:16,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:18,417 INFO L130 PetriNetUnfolder]: 5571/9519 cut-off events. [2023-01-27 20:15:18,418 INFO L131 PetriNetUnfolder]: For 211877/211877 co-relation queries the response was YES. [2023-01-27 20:15:18,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68865 conditions, 9519 events. 5571/9519 cut-off events. For 211877/211877 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 68078 event pairs, 1298 based on Foata normal form. 26/9451 useless extension candidates. Maximal degree in co-relation 68753. Up to 3543 conditions per place. [2023-01-27 20:15:18,510 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 201 changer transitions 0/539 dead transitions. [2023-01-27 20:15:18,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 539 transitions, 12673 flow [2023-01-27 20:15:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-01-27 20:15:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37298499166203447 [2023-01-27 20:15:18,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-01-27 20:15:18,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-01-27 20:15:18,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:18,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-01-27 20:15:18,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:18,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:18,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:18,516 INFO L175 Difference]: Start difference. First operand has 234 places, 454 transitions, 10750 flow. Second operand 7 states and 2013 transitions. [2023-01-27 20:15:18,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 539 transitions, 12673 flow [2023-01-27 20:15:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 12299 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:19,574 INFO L231 Difference]: Finished difference. Result has 237 places, 455 transitions, 10833 flow [2023-01-27 20:15:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10352, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10833, PETRI_PLACES=237, PETRI_TRANSITIONS=455} [2023-01-27 20:15:19,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2023-01-27 20:15:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 455 transitions, 10833 flow [2023-01-27 20:15:19,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:19,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:19,575 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-27 20:15:19,575 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:19,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786311, now seen corresponding path program 13 times [2023-01-27 20:15:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838264331] [2023-01-27 20:15:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838264331] [2023-01-27 20:15:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838264331] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:19,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021097060] [2023-01-27 20:15:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:19,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:19,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:19,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:19,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 455 transitions, 10833 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:19,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:19,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:19,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:22,026 INFO L130 PetriNetUnfolder]: 5556/9500 cut-off events. [2023-01-27 20:15:22,026 INFO L131 PetriNetUnfolder]: For 211382/211382 co-relation queries the response was YES. [2023-01-27 20:15:22,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68811 conditions, 9500 events. 5556/9500 cut-off events. For 211382/211382 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 68017 event pairs, 1270 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 68699. Up to 3543 conditions per place. [2023-01-27 20:15:22,122 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 399 selfloop transitions, 156 changer transitions 1/556 dead transitions. [2023-01-27 20:15:22,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 556 transitions, 13053 flow [2023-01-27 20:15:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-27 20:15:22,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-27 20:15:22,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-27 20:15:22,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-27 20:15:22,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:22,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-27 20:15:22,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:22,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:22,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:22,137 INFO L175 Difference]: Start difference. First operand has 237 places, 455 transitions, 10833 flow. Second operand 7 states and 2009 transitions. [2023-01-27 20:15:22,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 556 transitions, 13053 flow [2023-01-27 20:15:23,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 556 transitions, 12666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-27 20:15:23,197 INFO L231 Difference]: Finished difference. Result has 241 places, 457 transitions, 10866 flow [2023-01-27 20:15:23,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10866, PETRI_PLACES=241, PETRI_TRANSITIONS=457} [2023-01-27 20:15:23,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2023-01-27 20:15:23,197 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 457 transitions, 10866 flow [2023-01-27 20:15:23,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:23,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:23,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:23,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-27 20:15:23,198 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:23,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1374750287, now seen corresponding path program 14 times [2023-01-27 20:15:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951299984] [2023-01-27 20:15:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:23,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951299984] [2023-01-27 20:15:23,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951299984] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:15:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062104071] [2023-01-27 20:15:23,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:15:23,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:15:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:15:23,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:15:23,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:15:23,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:15:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:15:23,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 20:15:23,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:15:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:23,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:15:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:23,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062104071] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:15:23,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:15:23,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-27 20:15:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985274522] [2023-01-27 20:15:23,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:15:23,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:23,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 457 transitions, 10866 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:23,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:23,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:23,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:26,288 INFO L130 PetriNetUnfolder]: 5574/9514 cut-off events. [2023-01-27 20:15:26,288 INFO L131 PetriNetUnfolder]: For 215303/215303 co-relation queries the response was YES. [2023-01-27 20:15:26,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68931 conditions, 9514 events. 5574/9514 cut-off events. For 215303/215303 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67943 event pairs, 1318 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 68817. Up to 3543 conditions per place. [2023-01-27 20:15:26,398 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 164 changer transitions 0/559 dead transitions. [2023-01-27 20:15:26,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 559 transitions, 13191 flow [2023-01-27 20:15:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:15:26,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:15:26,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:15:26,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:15:26,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:26,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:15:26,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:26,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:26,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:26,405 INFO L175 Difference]: Start difference. First operand has 241 places, 457 transitions, 10866 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:15:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 559 transitions, 13191 flow [2023-01-27 20:15:27,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 559 transitions, 12828 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-01-27 20:15:27,524 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 11091 flow [2023-01-27 20:15:27,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10453, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11091, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2023-01-27 20:15:27,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-01-27 20:15:27,525 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 11091 flow [2023-01-27 20:15:27,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:27,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:27,526 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:27,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:15:27,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-27 20:15:27,730 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:27,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:27,731 INFO L85 PathProgramCache]: Analyzing trace with hash -261624810, now seen corresponding path program 15 times [2023-01-27 20:15:27,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:27,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146241377] [2023-01-27 20:15:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:27,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146241377] [2023-01-27 20:15:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146241377] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540055861] [2023-01-27 20:15:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:28,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:28,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:15:28,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 11091 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:28,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:28,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:15:28,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:30,620 INFO L130 PetriNetUnfolder]: 5892/10536 cut-off events. [2023-01-27 20:15:30,620 INFO L131 PetriNetUnfolder]: For 221819/221819 co-relation queries the response was YES. [2023-01-27 20:15:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 10536 events. 5892/10536 cut-off events. For 221819/221819 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 81982 event pairs, 767 based on Foata normal form. 8/10440 useless extension candidates. Maximal degree in co-relation 73599. Up to 5011 conditions per place. [2023-01-27 20:15:30,736 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 320 selfloop transitions, 285 changer transitions 0/605 dead transitions. [2023-01-27 20:15:30,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 605 transitions, 13865 flow [2023-01-27 20:15:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:15:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:15:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2806 transitions. [2023-01-27 20:15:30,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394293125810634 [2023-01-27 20:15:30,739 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2806 transitions. [2023-01-27 20:15:30,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2806 transitions. [2023-01-27 20:15:30,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:30,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2806 transitions. [2023-01-27 20:15:30,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.6) internal successors, (2806), 10 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:30,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:30,748 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:30,748 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 11091 flow. Second operand 10 states and 2806 transitions. [2023-01-27 20:15:30,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 605 transitions, 13865 flow [2023-01-27 20:15:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 605 transitions, 13525 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-27 20:15:32,085 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 12066 flow [2023-01-27 20:15:32,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12066, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-01-27 20:15:32,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-01-27 20:15:32,087 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 12066 flow [2023-01-27 20:15:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:32,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:32,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:32,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-27 20:15:32,088 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:32,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2058422772, now seen corresponding path program 16 times [2023-01-27 20:15:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:32,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373219843] [2023-01-27 20:15:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:32,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373219843] [2023-01-27 20:15:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373219843] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:32,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:32,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:32,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059855694] [2023-01-27 20:15:32,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:32,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:32,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:32,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:32,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:32,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:32,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:34,846 INFO L130 PetriNetUnfolder]: 5876/10506 cut-off events. [2023-01-27 20:15:34,846 INFO L131 PetriNetUnfolder]: For 237561/237561 co-relation queries the response was YES. [2023-01-27 20:15:34,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77040 conditions, 10506 events. 5876/10506 cut-off events. For 237561/237561 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 81010 event pairs, 1653 based on Foata normal form. 6/10408 useless extension candidates. Maximal degree in co-relation 76922. Up to 7326 conditions per place. [2023-01-27 20:15:34,969 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 210 changer transitions 6/554 dead transitions. [2023-01-27 20:15:34,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 554 transitions, 13639 flow [2023-01-27 20:15:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-27 20:15:34,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-27 20:15:34,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-27 20:15:34,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-27 20:15:34,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:34,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-27 20:15:34,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:34,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:34,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:34,979 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 12066 flow. Second operand 7 states and 2004 transitions. [2023-01-27 20:15:34,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 554 transitions, 13639 flow [2023-01-27 20:15:36,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 554 transitions, 13398 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:36,475 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 12181 flow [2023-01-27 20:15:36,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12181, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2023-01-27 20:15:36,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-01-27 20:15:36,476 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 12181 flow [2023-01-27 20:15:36,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:36,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:36,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:36,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-27 20:15:36,477 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:36,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 473239092, now seen corresponding path program 17 times [2023-01-27 20:15:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965143210] [2023-01-27 20:15:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965143210] [2023-01-27 20:15:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965143210] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:36,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:36,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291307402] [2023-01-27 20:15:36,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:36,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:36,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:36,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 12181 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:36,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:36,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:36,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:39,228 INFO L130 PetriNetUnfolder]: 5881/10523 cut-off events. [2023-01-27 20:15:39,228 INFO L131 PetriNetUnfolder]: For 239781/239781 co-relation queries the response was YES. [2023-01-27 20:15:39,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 10523 events. 5881/10523 cut-off events. For 239781/239781 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 81313 event pairs, 1567 based on Foata normal form. 12/10431 useless extension candidates. Maximal degree in co-relation 77177. Up to 7326 conditions per place. [2023-01-27 20:15:39,344 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 341 selfloop transitions, 215 changer transitions 1/557 dead transitions. [2023-01-27 20:15:39,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 557 transitions, 13914 flow [2023-01-27 20:15:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 20:15:39,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-27 20:15:39,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 20:15:39,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 20:15:39,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:39,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 20:15:39,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:39,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:39,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:39,350 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 12181 flow. Second operand 7 states and 2001 transitions. [2023-01-27 20:15:39,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 557 transitions, 13914 flow [2023-01-27 20:15:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 557 transitions, 13510 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 20:15:40,860 INFO L231 Difference]: Finished difference. Result has 258 places, 496 transitions, 12349 flow [2023-01-27 20:15:40,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12349, PETRI_PLACES=258, PETRI_TRANSITIONS=496} [2023-01-27 20:15:40,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2023-01-27 20:15:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 496 transitions, 12349 flow [2023-01-27 20:15:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:40,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:40,861 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-27 20:15:40,861 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:40,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 941711906, now seen corresponding path program 18 times [2023-01-27 20:15:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741891079] [2023-01-27 20:15:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:40,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:41,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741891079] [2023-01-27 20:15:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741891079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770769934] [2023-01-27 20:15:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:41,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:41,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:41,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 496 transitions, 12349 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:41,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:41,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:41,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:43,649 INFO L130 PetriNetUnfolder]: 5872/10494 cut-off events. [2023-01-27 20:15:43,649 INFO L131 PetriNetUnfolder]: For 244350/244350 co-relation queries the response was YES. [2023-01-27 20:15:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78039 conditions, 10494 events. 5872/10494 cut-off events. For 244350/244350 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 80902 event pairs, 1559 based on Foata normal form. 4/10394 useless extension candidates. Maximal degree in co-relation 77918. Up to 7326 conditions per place. [2023-01-27 20:15:43,785 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 214 changer transitions 0/547 dead transitions. [2023-01-27 20:15:43,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 547 transitions, 13819 flow [2023-01-27 20:15:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:15:43,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:15:43,787 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:15:43,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:15:43,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:43,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:15:43,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:43,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:43,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:43,791 INFO L175 Difference]: Start difference. First operand has 258 places, 496 transitions, 12349 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:15:43,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 547 transitions, 13819 flow [2023-01-27 20:15:45,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 547 transitions, 13411 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:15:45,396 INFO L231 Difference]: Finished difference. Result has 259 places, 494 transitions, 12308 flow [2023-01-27 20:15:45,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12308, PETRI_PLACES=259, PETRI_TRANSITIONS=494} [2023-01-27 20:15:45,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2023-01-27 20:15:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 494 transitions, 12308 flow [2023-01-27 20:15:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:45,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:45,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-27 20:15:45,398 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:45,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 421525821, now seen corresponding path program 15 times [2023-01-27 20:15:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084825804] [2023-01-27 20:15:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084825804] [2023-01-27 20:15:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084825804] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:45,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:15:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679997641] [2023-01-27 20:15:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:45,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:15:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:15:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:15:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:15:45,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 494 transitions, 12308 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:45,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:45,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:15:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:48,291 INFO L130 PetriNetUnfolder]: 6031/10821 cut-off events. [2023-01-27 20:15:48,291 INFO L131 PetriNetUnfolder]: For 243503/243503 co-relation queries the response was YES. [2023-01-27 20:15:48,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78996 conditions, 10821 events. 6031/10821 cut-off events. For 243503/243503 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 84913 event pairs, 799 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 78876. Up to 5424 conditions per place. [2023-01-27 20:15:48,414 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 432 selfloop transitions, 254 changer transitions 1/687 dead transitions. [2023-01-27 20:15:48,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 687 transitions, 16986 flow [2023-01-27 20:15:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:15:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:15:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2246 transitions. [2023-01-27 20:15:48,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641374837872892 [2023-01-27 20:15:48,416 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2246 transitions. [2023-01-27 20:15:48,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2246 transitions. [2023-01-27 20:15:48,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:48,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2246 transitions. [2023-01-27 20:15:48,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.75) internal successors, (2246), 8 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:48,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:48,420 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:48,420 INFO L175 Difference]: Start difference. First operand has 259 places, 494 transitions, 12308 flow. Second operand 8 states and 2246 transitions. [2023-01-27 20:15:48,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 687 transitions, 16986 flow [2023-01-27 20:15:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 687 transitions, 16486 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 20:15:49,959 INFO L231 Difference]: Finished difference. Result has 267 places, 548 transitions, 14028 flow [2023-01-27 20:15:49,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=267, PETRI_TRANSITIONS=548} [2023-01-27 20:15:49,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-01-27 20:15:49,959 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 548 transitions, 14028 flow [2023-01-27 20:15:49,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:49,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:49,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:49,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-01-27 20:15:49,960 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:49,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash -181201292, now seen corresponding path program 19 times [2023-01-27 20:15:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827975245] [2023-01-27 20:15:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827975245] [2023-01-27 20:15:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827975245] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52126714] [2023-01-27 20:15:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:50,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:50,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:50,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 548 transitions, 14028 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:50,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:50,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:50,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:52,850 INFO L130 PetriNetUnfolder]: 6009/10785 cut-off events. [2023-01-27 20:15:52,850 INFO L131 PetriNetUnfolder]: For 263891/263891 co-relation queries the response was YES. [2023-01-27 20:15:52,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81350 conditions, 10785 events. 6009/10785 cut-off events. For 263891/263891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 83986 event pairs, 1715 based on Foata normal form. 12/10797 useless extension candidates. Maximal degree in co-relation 81225. Up to 7297 conditions per place. [2023-01-27 20:15:52,982 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 365 selfloop transitions, 246 changer transitions 1/612 dead transitions. [2023-01-27 20:15:52,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 612 transitions, 15848 flow [2023-01-27 20:15:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:15:52,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:15:52,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:15:52,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:15:52,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:52,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:15:52,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:52,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:52,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:52,988 INFO L175 Difference]: Start difference. First operand has 267 places, 548 transitions, 14028 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:15:52,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 612 transitions, 15848 flow [2023-01-27 20:15:54,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 612 transitions, 15778 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-27 20:15:54,755 INFO L231 Difference]: Finished difference. Result has 275 places, 550 transitions, 14538 flow [2023-01-27 20:15:54,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14538, PETRI_PLACES=275, PETRI_TRANSITIONS=550} [2023-01-27 20:15:54,756 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-01-27 20:15:54,756 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 550 transitions, 14538 flow [2023-01-27 20:15:54,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:54,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:54,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:54,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-27 20:15:54,757 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:54,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1218142047, now seen corresponding path program 16 times [2023-01-27 20:15:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494214465] [2023-01-27 20:15:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:15:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494214465] [2023-01-27 20:15:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494214465] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:15:54,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:15:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:15:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942505339] [2023-01-27 20:15:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:15:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:15:54,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:15:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:15:54,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:15:54,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 550 transitions, 14538 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:54,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:54,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:15:54,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:57,717 INFO L130 PetriNetUnfolder]: 6029/10775 cut-off events. [2023-01-27 20:15:57,717 INFO L131 PetriNetUnfolder]: For 272514/272514 co-relation queries the response was YES. [2023-01-27 20:15:57,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82405 conditions, 10775 events. 6029/10775 cut-off events. For 272514/272514 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 83443 event pairs, 1579 based on Foata normal form. 26/10801 useless extension candidates. Maximal degree in co-relation 82277. Up to 4114 conditions per place. [2023-01-27 20:15:57,845 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 253 changer transitions 0/648 dead transitions. [2023-01-27 20:15:57,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 648 transitions, 17152 flow [2023-01-27 20:15:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:15:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:15:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-27 20:15:57,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-27 20:15:57,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-27 20:15:57,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-27 20:15:57,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:57,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-27 20:15:57,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:57,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:57,850 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:57,850 INFO L175 Difference]: Start difference. First operand has 275 places, 550 transitions, 14538 flow. Second operand 7 states and 2012 transitions. [2023-01-27 20:15:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 648 transitions, 17152 flow [2023-01-27 20:15:59,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 648 transitions, 16771 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-27 20:15:59,967 INFO L231 Difference]: Finished difference. Result has 282 places, 570 transitions, 15285 flow [2023-01-27 20:15:59,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15285, PETRI_PLACES=282, PETRI_TRANSITIONS=570} [2023-01-27 20:15:59,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-01-27 20:15:59,968 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 570 transitions, 15285 flow [2023-01-27 20:15:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:59,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:59,968 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:59,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-27 20:15:59,968 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:59,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -225720950, now seen corresponding path program 20 times [2023-01-27 20:15:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:59,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548727762] [2023-01-27 20:15:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:00,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548727762] [2023-01-27 20:16:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548727762] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715042314] [2023-01-27 20:16:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:00,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:00,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 570 transitions, 15285 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:00,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:00,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:00,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:03,124 INFO L130 PetriNetUnfolder]: 6035/10789 cut-off events. [2023-01-27 20:16:03,124 INFO L131 PetriNetUnfolder]: For 282152/282152 co-relation queries the response was YES. [2023-01-27 20:16:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83220 conditions, 10789 events. 6035/10789 cut-off events. For 282152/282152 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83644 event pairs, 1701 based on Foata normal form. 16/10805 useless extension candidates. Maximal degree in co-relation 83089. Up to 7292 conditions per place. [2023-01-27 20:16:03,266 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 378 selfloop transitions, 256 changer transitions 0/634 dead transitions. [2023-01-27 20:16:03,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 634 transitions, 17163 flow [2023-01-27 20:16:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:16:03,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:16:03,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:16:03,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:16:03,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:03,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:16:03,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:03,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:03,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:03,282 INFO L175 Difference]: Start difference. First operand has 282 places, 570 transitions, 15285 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:16:03,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 634 transitions, 17163 flow [2023-01-27 20:16:05,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 634 transitions, 16638 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-27 20:16:05,032 INFO L231 Difference]: Finished difference. Result has 288 places, 579 transitions, 15575 flow [2023-01-27 20:16:05,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15575, PETRI_PLACES=288, PETRI_TRANSITIONS=579} [2023-01-27 20:16:05,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-01-27 20:16:05,033 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 579 transitions, 15575 flow [2023-01-27 20:16:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:05,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:05,033 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-27 20:16:05,033 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:05,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 747282927, now seen corresponding path program 17 times [2023-01-27 20:16:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:05,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996696805] [2023-01-27 20:16:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996696805] [2023-01-27 20:16:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996696805] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:05,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:05,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478716301] [2023-01-27 20:16:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:05,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:05,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:05,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:05,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 579 transitions, 15575 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:05,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:05,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:05,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:08,423 INFO L130 PetriNetUnfolder]: 6037/10771 cut-off events. [2023-01-27 20:16:08,423 INFO L131 PetriNetUnfolder]: For 277139/277139 co-relation queries the response was YES. [2023-01-27 20:16:08,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 10771 events. 6037/10771 cut-off events. For 277139/277139 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83273 event pairs, 1555 based on Foata normal form. 6/10777 useless extension candidates. Maximal degree in co-relation 83822. Up to 4128 conditions per place. [2023-01-27 20:16:08,540 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 394 selfloop transitions, 260 changer transitions 0/654 dead transitions. [2023-01-27 20:16:08,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 654 transitions, 17630 flow [2023-01-27 20:16:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-27 20:16:08,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-27 20:16:08,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-27 20:16:08,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-27 20:16:08,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:08,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-27 20:16:08,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:08,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:08,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:08,547 INFO L175 Difference]: Start difference. First operand has 288 places, 579 transitions, 15575 flow. Second operand 7 states and 2012 transitions. [2023-01-27 20:16:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 654 transitions, 17630 flow [2023-01-27 20:16:10,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 654 transitions, 17142 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-27 20:16:10,205 INFO L231 Difference]: Finished difference. Result has 291 places, 583 transitions, 15811 flow [2023-01-27 20:16:10,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15811, PETRI_PLACES=291, PETRI_TRANSITIONS=583} [2023-01-27 20:16:10,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2023-01-27 20:16:10,206 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 583 transitions, 15811 flow [2023-01-27 20:16:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:10,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:10,206 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:10,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-27 20:16:10,206 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:10,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1792142250, now seen corresponding path program 21 times [2023-01-27 20:16:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249577640] [2023-01-27 20:16:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249577640] [2023-01-27 20:16:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249577640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:10,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:10,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:10,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998946530] [2023-01-27 20:16:10,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:10,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:10,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 583 transitions, 15811 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:10,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:10,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:13,350 INFO L130 PetriNetUnfolder]: 6005/10711 cut-off events. [2023-01-27 20:16:13,350 INFO L131 PetriNetUnfolder]: For 278983/278983 co-relation queries the response was YES. [2023-01-27 20:16:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83062 conditions, 10711 events. 6005/10711 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82675 event pairs, 1701 based on Foata normal form. 12/10723 useless extension candidates. Maximal degree in co-relation 82928. Up to 7266 conditions per place. [2023-01-27 20:16:13,473 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 380 selfloop transitions, 256 changer transitions 1/637 dead transitions. [2023-01-27 20:16:13,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 637 transitions, 17425 flow [2023-01-27 20:16:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:16:13,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:16:13,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:16:13,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:16:13,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:13,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:16:13,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:13,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:13,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:13,479 INFO L175 Difference]: Start difference. First operand has 291 places, 583 transitions, 15811 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:16:13,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 637 transitions, 17425 flow [2023-01-27 20:16:15,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 637 transitions, 17131 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-27 20:16:15,123 INFO L231 Difference]: Finished difference. Result has 296 places, 581 transitions, 15968 flow [2023-01-27 20:16:15,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15968, PETRI_PLACES=296, PETRI_TRANSITIONS=581} [2023-01-27 20:16:15,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-27 20:16:15,124 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 581 transitions, 15968 flow [2023-01-27 20:16:15,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:15,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:15,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-27 20:16:15,124 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:15,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 444735361, now seen corresponding path program 18 times [2023-01-27 20:16:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516528561] [2023-01-27 20:16:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516528561] [2023-01-27 20:16:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516528561] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895428454] [2023-01-27 20:16:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:15,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:15,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 581 transitions, 15968 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:15,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:15,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:15,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:18,089 INFO L130 PetriNetUnfolder]: 5981/10649 cut-off events. [2023-01-27 20:16:18,089 INFO L131 PetriNetUnfolder]: For 277146/277146 co-relation queries the response was YES. [2023-01-27 20:16:18,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82958 conditions, 10649 events. 5981/10649 cut-off events. For 277146/277146 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 81942 event pairs, 1535 based on Foata normal form. 10/10659 useless extension candidates. Maximal degree in co-relation 82823. Up to 4068 conditions per place. [2023-01-27 20:16:18,216 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 391 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2023-01-27 20:16:18,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 647 transitions, 17860 flow [2023-01-27 20:16:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:16:18,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:16:18,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:16:18,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:16:18,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:18,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:16:18,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:18,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:18,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:18,222 INFO L175 Difference]: Start difference. First operand has 296 places, 581 transitions, 15968 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:16:18,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 647 transitions, 17860 flow [2023-01-27 20:16:20,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 647 transitions, 17343 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 20:16:20,089 INFO L231 Difference]: Finished difference. Result has 296 places, 584 transitions, 16063 flow [2023-01-27 20:16:20,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15367, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16063, PETRI_PLACES=296, PETRI_TRANSITIONS=584} [2023-01-27 20:16:20,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-27 20:16:20,089 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 584 transitions, 16063 flow [2023-01-27 20:16:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:20,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:20,090 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-01-27 20:16:20,090 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:20,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash 301631524, now seen corresponding path program 22 times [2023-01-27 20:16:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:20,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234332040] [2023-01-27 20:16:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:20,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:20,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234332040] [2023-01-27 20:16:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234332040] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:20,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:20,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140141044] [2023-01-27 20:16:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:20,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:20,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:16:20,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 584 transitions, 16063 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:20,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:20,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:16:20,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:23,315 INFO L130 PetriNetUnfolder]: 6115/10945 cut-off events. [2023-01-27 20:16:23,315 INFO L131 PetriNetUnfolder]: For 283656/283656 co-relation queries the response was YES. [2023-01-27 20:16:23,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84292 conditions, 10945 events. 6115/10945 cut-off events. For 283656/283656 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 85851 event pairs, 885 based on Foata normal form. 8/10953 useless extension candidates. Maximal degree in co-relation 84159. Up to 5029 conditions per place. [2023-01-27 20:16:23,455 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 349 selfloop transitions, 340 changer transitions 0/689 dead transitions. [2023-01-27 20:16:23,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 689 transitions, 18560 flow [2023-01-27 20:16:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:16:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:16:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2527 transitions. [2023-01-27 20:16:23,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36417351203343423 [2023-01-27 20:16:23,457 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2527 transitions. [2023-01-27 20:16:23,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2527 transitions. [2023-01-27 20:16:23,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:23,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2527 transitions. [2023-01-27 20:16:23,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.77777777777777) internal successors, (2527), 9 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:23,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:23,462 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:23,462 INFO L175 Difference]: Start difference. First operand has 296 places, 584 transitions, 16063 flow. Second operand 9 states and 2527 transitions. [2023-01-27 20:16:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 689 transitions, 18560 flow [2023-01-27 20:16:25,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 689 transitions, 18107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-27 20:16:25,580 INFO L231 Difference]: Finished difference. Result has 299 places, 597 transitions, 16611 flow [2023-01-27 20:16:25,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15581, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16611, PETRI_PLACES=299, PETRI_TRANSITIONS=597} [2023-01-27 20:16:25,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2023-01-27 20:16:25,580 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 597 transitions, 16611 flow [2023-01-27 20:16:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:25,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:25,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:25,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-27 20:16:25,581 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:25,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1860640349, now seen corresponding path program 19 times [2023-01-27 20:16:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:25,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126550197] [2023-01-27 20:16:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126550197] [2023-01-27 20:16:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126550197] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399616787] [2023-01-27 20:16:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:25,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:25,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 597 transitions, 16611 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:25,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:25,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:28,705 INFO L130 PetriNetUnfolder]: 6105/10923 cut-off events. [2023-01-27 20:16:28,705 INFO L131 PetriNetUnfolder]: For 289853/289853 co-relation queries the response was YES. [2023-01-27 20:16:28,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86457 conditions, 10923 events. 6105/10923 cut-off events. For 289853/289853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 84918 event pairs, 1619 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 86324. Up to 4042 conditions per place. [2023-01-27 20:16:28,859 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 255 changer transitions 4/657 dead transitions. [2023-01-27 20:16:28,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 657 transitions, 18416 flow [2023-01-27 20:16:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-27 20:16:28,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-27 20:16:28,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-27 20:16:28,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-27 20:16:28,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:28,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-27 20:16:28,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:28,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:28,865 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:28,865 INFO L175 Difference]: Start difference. First operand has 299 places, 597 transitions, 16611 flow. Second operand 7 states and 2003 transitions. [2023-01-27 20:16:28,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 657 transitions, 18416 flow [2023-01-27 20:16:30,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 657 transitions, 17823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:16:31,009 INFO L231 Difference]: Finished difference. Result has 302 places, 596 transitions, 16516 flow [2023-01-27 20:16:31,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16516, PETRI_PLACES=302, PETRI_TRANSITIONS=596} [2023-01-27 20:16:31,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-01-27 20:16:31,010 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 596 transitions, 16516 flow [2023-01-27 20:16:31,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:31,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:31,011 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-27 20:16:31,011 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:31,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash -769401119, now seen corresponding path program 20 times [2023-01-27 20:16:31,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450627196] [2023-01-27 20:16:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:31,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:31,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450627196] [2023-01-27 20:16:31,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450627196] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875618563] [2023-01-27 20:16:31,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:31,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:31,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:31,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:16:31,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 596 transitions, 16516 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:31,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:31,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:16:31,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:34,386 INFO L130 PetriNetUnfolder]: 6132/10986 cut-off events. [2023-01-27 20:16:34,386 INFO L131 PetriNetUnfolder]: For 289119/289119 co-relation queries the response was YES. [2023-01-27 20:16:34,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85937 conditions, 10986 events. 6132/10986 cut-off events. For 289119/289119 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 85949 event pairs, 1341 based on Foata normal form. 4/10990 useless extension candidates. Maximal degree in co-relation 85819. Up to 6043 conditions per place. [2023-01-27 20:16:34,505 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 415 selfloop transitions, 299 changer transitions 1/715 dead transitions. [2023-01-27 20:16:34,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 715 transitions, 19765 flow [2023-01-27 20:16:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1967 transitions. [2023-01-27 20:16:34,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364461738002594 [2023-01-27 20:16:34,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1967 transitions. [2023-01-27 20:16:34,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1967 transitions. [2023-01-27 20:16:34,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:34,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1967 transitions. [2023-01-27 20:16:34,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:34,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:34,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:34,511 INFO L175 Difference]: Start difference. First operand has 302 places, 596 transitions, 16516 flow. Second operand 7 states and 1967 transitions. [2023-01-27 20:16:34,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 715 transitions, 19765 flow [2023-01-27 20:16:36,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 715 transitions, 19338 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:16:36,139 INFO L231 Difference]: Finished difference. Result has 307 places, 616 transitions, 17596 flow [2023-01-27 20:16:36,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17596, PETRI_PLACES=307, PETRI_TRANSITIONS=616} [2023-01-27 20:16:36,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2023-01-27 20:16:36,140 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 616 transitions, 17596 flow [2023-01-27 20:16:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:36,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:36,141 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-01-27 20:16:36,141 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:36,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1662687720, now seen corresponding path program 23 times [2023-01-27 20:16:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103567694] [2023-01-27 20:16:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:36,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103567694] [2023-01-27 20:16:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103567694] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:36,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044870609] [2023-01-27 20:16:36,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:36,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:36,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:36,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 616 transitions, 17596 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:36,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:36,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:39,453 INFO L130 PetriNetUnfolder]: 6127/10967 cut-off events. [2023-01-27 20:16:39,454 INFO L131 PetriNetUnfolder]: For 316683/316683 co-relation queries the response was YES. [2023-01-27 20:16:39,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 10967 events. 6127/10967 cut-off events. For 316683/316683 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85405 event pairs, 1751 based on Foata normal form. 4/10971 useless extension candidates. Maximal degree in co-relation 87190. Up to 7251 conditions per place. [2023-01-27 20:16:39,588 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 261 changer transitions 0/659 dead transitions. [2023-01-27 20:16:39,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 659 transitions, 19245 flow [2023-01-27 20:16:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:16:39,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:16:39,590 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:16:39,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:16:39,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:39,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:16:39,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:39,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:39,594 INFO L175 Difference]: Start difference. First operand has 307 places, 616 transitions, 17596 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:16:39,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 659 transitions, 19245 flow [2023-01-27 20:16:41,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 659 transitions, 18919 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-01-27 20:16:41,347 INFO L231 Difference]: Finished difference. Result has 309 places, 617 transitions, 17798 flow [2023-01-27 20:16:41,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17798, PETRI_PLACES=309, PETRI_TRANSITIONS=617} [2023-01-27 20:16:41,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2023-01-27 20:16:41,348 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 617 transitions, 17798 flow [2023-01-27 20:16:41,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:41,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:41,348 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:41,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-27 20:16:41,348 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:41,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1151670496, now seen corresponding path program 24 times [2023-01-27 20:16:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240682551] [2023-01-27 20:16:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240682551] [2023-01-27 20:16:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240682551] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:41,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:41,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264201553] [2023-01-27 20:16:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:41,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:16:41,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 617 transitions, 17798 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:41,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:41,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:16:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:44,883 INFO L130 PetriNetUnfolder]: 6277/11245 cut-off events. [2023-01-27 20:16:44,884 INFO L131 PetriNetUnfolder]: For 316533/316533 co-relation queries the response was YES. [2023-01-27 20:16:44,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90213 conditions, 11245 events. 6277/11245 cut-off events. For 316533/316533 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 88652 event pairs, 707 based on Foata normal form. 8/11253 useless extension candidates. Maximal degree in co-relation 90093. Up to 3786 conditions per place. [2023-01-27 20:16:45,038 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 412 selfloop transitions, 361 changer transitions 0/773 dead transitions. [2023-01-27 20:16:45,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 773 transitions, 21756 flow [2023-01-27 20:16:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:16:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:16:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2530 transitions. [2023-01-27 20:16:45,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460585098717396 [2023-01-27 20:16:45,040 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2530 transitions. [2023-01-27 20:16:45,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2530 transitions. [2023-01-27 20:16:45,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:45,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2530 transitions. [2023-01-27 20:16:45,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.1111111111111) internal successors, (2530), 9 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:45,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:45,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:45,045 INFO L175 Difference]: Start difference. First operand has 309 places, 617 transitions, 17798 flow. Second operand 9 states and 2530 transitions. [2023-01-27 20:16:45,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 773 transitions, 21756 flow [2023-01-27 20:16:47,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 773 transitions, 21047 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-27 20:16:47,245 INFO L231 Difference]: Finished difference. Result has 316 places, 644 transitions, 19098 flow [2023-01-27 20:16:47,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17139, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19098, PETRI_PLACES=316, PETRI_TRANSITIONS=644} [2023-01-27 20:16:47,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-01-27 20:16:47,246 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 644 transitions, 19098 flow [2023-01-27 20:16:47,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:47,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:47,246 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:47,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-27 20:16:47,246 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:47,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906338, now seen corresponding path program 25 times [2023-01-27 20:16:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484884371] [2023-01-27 20:16:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:47,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:47,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484884371] [2023-01-27 20:16:47,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484884371] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:47,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:47,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367890120] [2023-01-27 20:16:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:47,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:47,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:47,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 644 transitions, 19098 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:47,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:47,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:50,726 INFO L130 PetriNetUnfolder]: 6689/12023 cut-off events. [2023-01-27 20:16:50,727 INFO L131 PetriNetUnfolder]: For 360624/360624 co-relation queries the response was YES. [2023-01-27 20:16:50,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 12023 events. 6689/12023 cut-off events. For 360624/360624 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 95742 event pairs, 1381 based on Foata normal form. 8/12031 useless extension candidates. Maximal degree in co-relation 99341. Up to 3366 conditions per place. [2023-01-27 20:16:50,905 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 282 changer transitions 0/789 dead transitions. [2023-01-27 20:16:50,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 789 transitions, 23280 flow [2023-01-27 20:16:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:16:50,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:16:50,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:16:50,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:16:50,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:50,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:16:50,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:50,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:50,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:50,910 INFO L175 Difference]: Start difference. First operand has 316 places, 644 transitions, 19098 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:16:50,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 789 transitions, 23280 flow [2023-01-27 20:16:53,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 789 transitions, 22724 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-01-27 20:16:53,638 INFO L231 Difference]: Finished difference. Result has 320 places, 660 transitions, 19806 flow [2023-01-27 20:16:53,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19806, PETRI_PLACES=320, PETRI_TRANSITIONS=660} [2023-01-27 20:16:53,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2023-01-27 20:16:53,639 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 660 transitions, 19806 flow [2023-01-27 20:16:53,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:53,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:16:53,639 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:16:53,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-27 20:16:53,639 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:53,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash -547474396, now seen corresponding path program 26 times [2023-01-27 20:16:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:53,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638855146] [2023-01-27 20:16:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:53,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:16:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638855146] [2023-01-27 20:16:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638855146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:16:53,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:16:53,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:16:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315760557] [2023-01-27 20:16:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:16:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:16:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:16:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:16:53,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:16:53,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 660 transitions, 19806 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:53,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:53,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:16:53,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:57,639 INFO L130 PetriNetUnfolder]: 6650/11934 cut-off events. [2023-01-27 20:16:57,639 INFO L131 PetriNetUnfolder]: For 368474/368474 co-relation queries the response was YES. [2023-01-27 20:16:57,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98759 conditions, 11934 events. 6650/11934 cut-off events. For 368474/368474 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94669 event pairs, 1577 based on Foata normal form. 10/11944 useless extension candidates. Maximal degree in co-relation 98633. Up to 3857 conditions per place. [2023-01-27 20:16:57,786 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 434 selfloop transitions, 339 changer transitions 0/773 dead transitions. [2023-01-27 20:16:57,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 773 transitions, 23156 flow [2023-01-27 20:16:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:16:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:16:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-27 20:16:57,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-27 20:16:57,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-27 20:16:57,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-27 20:16:57,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:16:57,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-27 20:16:57,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:57,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:57,792 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:57,792 INFO L175 Difference]: Start difference. First operand has 320 places, 660 transitions, 19806 flow. Second operand 7 states and 2009 transitions. [2023-01-27 20:16:57,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 773 transitions, 23156 flow [2023-01-27 20:17:00,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 773 transitions, 22785 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-27 20:17:00,336 INFO L231 Difference]: Finished difference. Result has 326 places, 673 transitions, 20783 flow [2023-01-27 20:17:00,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=19457, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20783, PETRI_PLACES=326, PETRI_TRANSITIONS=673} [2023-01-27 20:17:00,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-01-27 20:17:00,337 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 673 transitions, 20783 flow [2023-01-27 20:17:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:00,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:00,338 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:00,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-27 20:17:00,338 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:00,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash -238784307, now seen corresponding path program 21 times [2023-01-27 20:17:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388592049] [2023-01-27 20:17:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:00,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:00,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388592049] [2023-01-27 20:17:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388592049] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:00,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:00,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:00,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777324259] [2023-01-27 20:17:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:00,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:00,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:00,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 673 transitions, 20783 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:00,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:00,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:04,092 INFO L130 PetriNetUnfolder]: 6659/11951 cut-off events. [2023-01-27 20:17:04,093 INFO L131 PetriNetUnfolder]: For 379255/379255 co-relation queries the response was YES. [2023-01-27 20:17:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 11951 events. 6659/11951 cut-off events. For 379255/379255 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94744 event pairs, 1895 based on Foata normal form. 8/11959 useless extension candidates. Maximal degree in co-relation 98809. Up to 7602 conditions per place. [2023-01-27 20:17:04,304 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 436 selfloop transitions, 319 changer transitions 0/755 dead transitions. [2023-01-27 20:17:04,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 755 transitions, 23338 flow [2023-01-27 20:17:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-27 20:17:04,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-27 20:17:04,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-27 20:17:04,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-27 20:17:04,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:04,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-27 20:17:04,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:04,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:04,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:04,310 INFO L175 Difference]: Start difference. First operand has 326 places, 673 transitions, 20783 flow. Second operand 7 states and 2010 transitions. [2023-01-27 20:17:04,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 755 transitions, 23338 flow [2023-01-27 20:17:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 755 transitions, 22874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 20:17:06,892 INFO L231 Difference]: Finished difference. Result has 333 places, 684 transitions, 21530 flow [2023-01-27 20:17:06,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21530, PETRI_PLACES=333, PETRI_TRANSITIONS=684} [2023-01-27 20:17:06,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2023-01-27 20:17:06,893 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 684 transitions, 21530 flow [2023-01-27 20:17:06,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:06,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:06,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:06,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-27 20:17:06,894 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:06,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -68082012, now seen corresponding path program 27 times [2023-01-27 20:17:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838405984] [2023-01-27 20:17:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838405984] [2023-01-27 20:17:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838405984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:07,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:07,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:17:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634548259] [2023-01-27 20:17:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:07,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:17:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:17:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:17:07,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:17:07,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 684 transitions, 21530 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:07,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:07,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:17:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:10,978 INFO L130 PetriNetUnfolder]: 6677/11991 cut-off events. [2023-01-27 20:17:10,979 INFO L131 PetriNetUnfolder]: For 382643/382643 co-relation queries the response was YES. [2023-01-27 20:17:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100572 conditions, 11991 events. 6677/11991 cut-off events. For 382643/382643 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95530 event pairs, 783 based on Foata normal form. 4/11995 useless extension candidates. Maximal degree in co-relation 100440. Up to 4835 conditions per place. [2023-01-27 20:17:11,155 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 483 selfloop transitions, 321 changer transitions 0/804 dead transitions. [2023-01-27 20:17:11,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 804 transitions, 24786 flow [2023-01-27 20:17:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:17:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:17:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2023-01-27 20:17:11,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-27 20:17:11,158 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2023-01-27 20:17:11,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2023-01-27 20:17:11,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:11,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2023-01-27 20:17:11,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:11,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:11,162 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:11,162 INFO L175 Difference]: Start difference. First operand has 333 places, 684 transitions, 21530 flow. Second operand 8 states and 2244 transitions. [2023-01-27 20:17:11,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 804 transitions, 24786 flow [2023-01-27 20:17:14,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 804 transitions, 24250 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-27 20:17:14,253 INFO L231 Difference]: Finished difference. Result has 337 places, 702 transitions, 22312 flow [2023-01-27 20:17:14,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20942, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22312, PETRI_PLACES=337, PETRI_TRANSITIONS=702} [2023-01-27 20:17:14,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-01-27 20:17:14,254 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 702 transitions, 22312 flow [2023-01-27 20:17:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:14,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:14,254 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-27 20:17:14,254 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:14,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718955, now seen corresponding path program 22 times [2023-01-27 20:17:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462108670] [2023-01-27 20:17:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462108670] [2023-01-27 20:17:14,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462108670] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:14,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:14,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130899001] [2023-01-27 20:17:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:14,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:14,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 702 transitions, 22312 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:14,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:14,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:14,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:18,131 INFO L130 PetriNetUnfolder]: 6673/11987 cut-off events. [2023-01-27 20:17:18,131 INFO L131 PetriNetUnfolder]: For 412287/412287 co-relation queries the response was YES. [2023-01-27 20:17:18,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102985 conditions, 11987 events. 6673/11987 cut-off events. For 412287/412287 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95177 event pairs, 1849 based on Foata normal form. 4/11991 useless extension candidates. Maximal degree in co-relation 102854. Up to 7634 conditions per place. [2023-01-27 20:17:18,293 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 443 selfloop transitions, 332 changer transitions 5/780 dead transitions. [2023-01-27 20:17:18,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 780 transitions, 24659 flow [2023-01-27 20:17:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 20:17:18,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-27 20:17:18,295 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 20:17:18,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 20:17:18,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:18,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 20:17:18,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:18,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:18,300 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:18,300 INFO L175 Difference]: Start difference. First operand has 337 places, 702 transitions, 22312 flow. Second operand 7 states and 2001 transitions. [2023-01-27 20:17:18,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 780 transitions, 24659 flow [2023-01-27 20:17:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 780 transitions, 24333 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-27 20:17:21,202 INFO L231 Difference]: Finished difference. Result has 340 places, 699 transitions, 22509 flow [2023-01-27 20:17:21,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21939, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22509, PETRI_PLACES=340, PETRI_TRANSITIONS=699} [2023-01-27 20:17:21,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-01-27 20:17:21,203 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 699 transitions, 22509 flow [2023-01-27 20:17:21,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:21,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:21,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:21,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-27 20:17:21,204 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:21,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1813531806, now seen corresponding path program 28 times [2023-01-27 20:17:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782390667] [2023-01-27 20:17:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:21,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:21,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782390667] [2023-01-27 20:17:21,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782390667] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:21,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:21,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253104160] [2023-01-27 20:17:21,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:21,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:21,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:21,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 699 transitions, 22509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:21,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:21,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:21,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:25,728 INFO L130 PetriNetUnfolder]: 6651/11943 cut-off events. [2023-01-27 20:17:25,728 INFO L131 PetriNetUnfolder]: For 414860/414860 co-relation queries the response was YES. [2023-01-27 20:17:25,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 11943 events. 6651/11943 cut-off events. For 414860/414860 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 94447 event pairs, 1765 based on Foata normal form. 6/11949 useless extension candidates. Maximal degree in co-relation 102845. Up to 3870 conditions per place. [2023-01-27 20:17:25,862 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 273 changer transitions 6/786 dead transitions. [2023-01-27 20:17:25,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 786 transitions, 25087 flow [2023-01-27 20:17:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-27 20:17:25,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-27 20:17:25,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-27 20:17:25,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-27 20:17:25,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:25,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-27 20:17:25,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:25,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:25,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:25,867 INFO L175 Difference]: Start difference. First operand has 340 places, 699 transitions, 22509 flow. Second operand 7 states and 2000 transitions. [2023-01-27 20:17:25,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 786 transitions, 25087 flow [2023-01-27 20:17:28,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 786 transitions, 24586 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-01-27 20:17:28,356 INFO L231 Difference]: Finished difference. Result has 342 places, 696 transitions, 22475 flow [2023-01-27 20:17:28,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21957, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22475, PETRI_PLACES=342, PETRI_TRANSITIONS=696} [2023-01-27 20:17:28,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-01-27 20:17:28,357 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 696 transitions, 22475 flow [2023-01-27 20:17:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:28,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:28,357 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:28,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-27 20:17:28,357 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:28,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash -708909313, now seen corresponding path program 23 times [2023-01-27 20:17:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76885587] [2023-01-27 20:17:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:28,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:28,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76885587] [2023-01-27 20:17:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76885587] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675013996] [2023-01-27 20:17:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:28,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:28,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 696 transitions, 22475 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:28,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:28,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:28,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:32,680 INFO L130 PetriNetUnfolder]: 6655/11965 cut-off events. [2023-01-27 20:17:32,681 INFO L131 PetriNetUnfolder]: For 411926/411926 co-relation queries the response was YES. [2023-01-27 20:17:32,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102435 conditions, 11965 events. 6655/11965 cut-off events. For 411926/411926 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95036 event pairs, 1855 based on Foata normal form. 8/11973 useless extension candidates. Maximal degree in co-relation 102305. Up to 7604 conditions per place. [2023-01-27 20:17:32,825 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 438 selfloop transitions, 330 changer transitions 1/769 dead transitions. [2023-01-27 20:17:32,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 769 transitions, 24802 flow [2023-01-27 20:17:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-27 20:17:32,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-27 20:17:32,826 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-27 20:17:32,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-27 20:17:32,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:32,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-27 20:17:32,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:32,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:32,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:32,830 INFO L175 Difference]: Start difference. First operand has 342 places, 696 transitions, 22475 flow. Second operand 7 states and 1999 transitions. [2023-01-27 20:17:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 769 transitions, 24802 flow [2023-01-27 20:17:35,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 769 transitions, 24320 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 20:17:35,384 INFO L231 Difference]: Finished difference. Result has 346 places, 698 transitions, 22713 flow [2023-01-27 20:17:35,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21953, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22713, PETRI_PLACES=346, PETRI_TRANSITIONS=698} [2023-01-27 20:17:35,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2023-01-27 20:17:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 698 transitions, 22713 flow [2023-01-27 20:17:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:35,385 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:35,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-27 20:17:35,385 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:35,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1494227853, now seen corresponding path program 24 times [2023-01-27 20:17:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187895265] [2023-01-27 20:17:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187895265] [2023-01-27 20:17:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187895265] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401943231] [2023-01-27 20:17:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:35,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:35,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:35,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 698 transitions, 22713 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:35,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:35,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:35,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:39,532 INFO L130 PetriNetUnfolder]: 6649/11935 cut-off events. [2023-01-27 20:17:39,532 INFO L131 PetriNetUnfolder]: For 417781/417781 co-relation queries the response was YES. [2023-01-27 20:17:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102947 conditions, 11935 events. 6649/11935 cut-off events. For 417781/417781 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 94577 event pairs, 1839 based on Foata normal form. 4/11939 useless extension candidates. Maximal degree in co-relation 102815. Up to 7604 conditions per place. [2023-01-27 20:17:39,688 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 430 selfloop transitions, 330 changer transitions 0/760 dead transitions. [2023-01-27 20:17:39,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 760 transitions, 24882 flow [2023-01-27 20:17:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1993 transitions. [2023-01-27 20:17:39,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692792292014082 [2023-01-27 20:17:39,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1993 transitions. [2023-01-27 20:17:39,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1993 transitions. [2023-01-27 20:17:39,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:39,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1993 transitions. [2023-01-27 20:17:39,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:39,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:39,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:39,693 INFO L175 Difference]: Start difference. First operand has 346 places, 698 transitions, 22713 flow. Second operand 7 states and 1993 transitions. [2023-01-27 20:17:39,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 760 transitions, 24882 flow [2023-01-27 20:17:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 760 transitions, 24271 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-27 20:17:42,245 INFO L231 Difference]: Finished difference. Result has 347 places, 697 transitions, 22730 flow [2023-01-27 20:17:42,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22070, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22730, PETRI_PLACES=347, PETRI_TRANSITIONS=697} [2023-01-27 20:17:42,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-01-27 20:17:42,245 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 697 transitions, 22730 flow [2023-01-27 20:17:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:42,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:42,246 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:42,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-27 20:17:42,246 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:42,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -790790675, now seen corresponding path program 25 times [2023-01-27 20:17:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454916604] [2023-01-27 20:17:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454916604] [2023-01-27 20:17:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454916604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:42,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244997340] [2023-01-27 20:17:42,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:42,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:42,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:42,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:17:42,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 697 transitions, 22730 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:42,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:42,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:17:42,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:46,473 INFO L130 PetriNetUnfolder]: 6629/11891 cut-off events. [2023-01-27 20:17:46,473 INFO L131 PetriNetUnfolder]: For 417919/417919 co-relation queries the response was YES. [2023-01-27 20:17:46,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102778 conditions, 11891 events. 6629/11891 cut-off events. For 417919/417919 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 94062 event pairs, 1927 based on Foata normal form. 8/11899 useless extension candidates. Maximal degree in co-relation 102647. Up to 7604 conditions per place. [2023-01-27 20:17:46,626 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 441 selfloop transitions, 330 changer transitions 1/772 dead transitions. [2023-01-27 20:17:46,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 772 transitions, 24973 flow [2023-01-27 20:17:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:17:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:17:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-27 20:17:46,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-27 20:17:46,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-27 20:17:46,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-27 20:17:46,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:46,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-27 20:17:46,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:46,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:46,631 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:46,632 INFO L175 Difference]: Start difference. First operand has 347 places, 697 transitions, 22730 flow. Second operand 7 states and 2005 transitions. [2023-01-27 20:17:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 772 transitions, 24973 flow [2023-01-27 20:17:49,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 772 transitions, 24309 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 20:17:49,152 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 22712 flow [2023-01-27 20:17:49,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22023, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22712, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2023-01-27 20:17:49,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2023-01-27 20:17:49,153 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 22712 flow [2023-01-27 20:17:49,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:49,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:49,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-01-27 20:17:49,153 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:49,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2052057265, now seen corresponding path program 26 times [2023-01-27 20:17:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705800857] [2023-01-27 20:17:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705800857] [2023-01-27 20:17:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705800857] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:17:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:17:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:17:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668616901] [2023-01-27 20:17:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:49,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:17:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:17:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:17:49,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:17:49,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 22712 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:49,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:49,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:17:49,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:17:53,896 INFO L130 PetriNetUnfolder]: 7334/13402 cut-off events. [2023-01-27 20:17:53,896 INFO L131 PetriNetUnfolder]: For 442791/442791 co-relation queries the response was YES. [2023-01-27 20:17:54,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 13402 events. 7334/13402 cut-off events. For 442791/442791 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 111626 event pairs, 1079 based on Foata normal form. 10/13412 useless extension candidates. Maximal degree in co-relation 112145. Up to 5787 conditions per place. [2023-01-27 20:17:54,073 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 427 selfloop transitions, 473 changer transitions 1/901 dead transitions. [2023-01-27 20:17:54,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 901 transitions, 28292 flow [2023-01-27 20:17:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:17:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:17:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2800 transitions. [2023-01-27 20:17:54,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-27 20:17:54,076 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2800 transitions. [2023-01-27 20:17:54,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2800 transitions. [2023-01-27 20:17:54,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:54,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2800 transitions. [2023-01-27 20:17:54,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:54,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:54,081 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:54,081 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 22712 flow. Second operand 10 states and 2800 transitions. [2023-01-27 20:17:54,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 901 transitions, 28292 flow [2023-01-27 20:17:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 901 transitions, 27577 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 20:17:57,177 INFO L231 Difference]: Finished difference. Result has 356 places, 771 transitions, 25341 flow [2023-01-27 20:17:57,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22065, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25341, PETRI_PLACES=356, PETRI_TRANSITIONS=771} [2023-01-27 20:17:57,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-01-27 20:17:57,178 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 771 transitions, 25341 flow [2023-01-27 20:17:57,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:57,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:57,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:57,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-27 20:17:57,178 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:57,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:57,179 INFO L85 PathProgramCache]: Analyzing trace with hash -630506158, now seen corresponding path program 29 times [2023-01-27 20:17:57,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:57,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33842901] [2023-01-27 20:17:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:57,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:57,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33842901] [2023-01-27 20:17:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33842901] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:17:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034864048] [2023-01-27 20:17:57,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:17:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:17:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:17:57,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:17:57,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:17:57,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:17:57,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:17:57,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:17:57,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:17:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:57,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:17:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:17:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034864048] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:17:58,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:17:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-01-27 20:17:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372517128] [2023-01-27 20:17:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:17:58,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:17:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:17:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:17:58,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 771 [2023-01-27 20:17:58,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 771 transitions, 25341 flow. Second operand has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:58,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:58,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 771 [2023-01-27 20:17:58,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:03,107 INFO L130 PetriNetUnfolder]: 7376/13474 cut-off events. [2023-01-27 20:18:03,107 INFO L131 PetriNetUnfolder]: For 475315/475315 co-relation queries the response was YES. [2023-01-27 20:18:03,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13474 events. 7376/13474 cut-off events. For 475315/475315 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111222 event pairs, 2077 based on Foata normal form. 6/13480 useless extension candidates. Maximal degree in co-relation 117489. Up to 5815 conditions per place. [2023-01-27 20:18:03,281 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 516 selfloop transitions, 334 changer transitions 14/864 dead transitions. [2023-01-27 20:18:03,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 864 transitions, 28302 flow [2023-01-27 20:18:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:18:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:18:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2251 transitions. [2023-01-27 20:18:03,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649481193255512 [2023-01-27 20:18:03,283 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2251 transitions. [2023-01-27 20:18:03,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2251 transitions. [2023-01-27 20:18:03,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:03,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2251 transitions. [2023-01-27 20:18:03,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.375) internal successors, (2251), 8 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:03,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:03,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:03,287 INFO L175 Difference]: Start difference. First operand has 356 places, 771 transitions, 25341 flow. Second operand 8 states and 2251 transitions. [2023-01-27 20:18:03,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 864 transitions, 28302 flow [2023-01-27 20:18:07,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 864 transitions, 27636 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-01-27 20:18:07,107 INFO L231 Difference]: Finished difference. Result has 363 places, 776 transitions, 25619 flow [2023-01-27 20:18:07,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=24681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25619, PETRI_PLACES=363, PETRI_TRANSITIONS=776} [2023-01-27 20:18:07,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-01-27 20:18:07,108 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 776 transitions, 25619 flow [2023-01-27 20:18:07,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:07,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:07,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:07,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:18:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:18:07,310 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:07,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash 246931528, now seen corresponding path program 30 times [2023-01-27 20:18:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:07,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968403250] [2023-01-27 20:18:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968403250] [2023-01-27 20:18:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968403250] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:18:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013113916] [2023-01-27 20:18:07,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:18:07,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:18:07,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:18:07,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:18:07,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:18:07,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:18:07,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:18:07,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 20:18:07,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:18:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:07,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:18:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013113916] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:18:08,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:18:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 20:18:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375308187] [2023-01-27 20:18:08,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:18:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:18:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:18:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:18:08,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:08,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 776 transitions, 25619 flow. Second operand has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:08,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:08,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:08,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:12,828 INFO L130 PetriNetUnfolder]: 7225/13181 cut-off events. [2023-01-27 20:18:12,829 INFO L131 PetriNetUnfolder]: For 460323/460323 co-relation queries the response was YES. [2023-01-27 20:18:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114472 conditions, 13181 events. 7225/13181 cut-off events. For 460323/460323 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 108291 event pairs, 1877 based on Foata normal form. 20/13201 useless extension candidates. Maximal degree in co-relation 114335. Up to 4389 conditions per place. [2023-01-27 20:18:13,019 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 450 selfloop transitions, 396 changer transitions 0/846 dead transitions. [2023-01-27 20:18:13,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 846 transitions, 28058 flow [2023-01-27 20:18:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-27 20:18:13,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-27 20:18:13,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-27 20:18:13,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-27 20:18:13,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:13,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-27 20:18:13,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:13,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:13,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:13,024 INFO L175 Difference]: Start difference. First operand has 363 places, 776 transitions, 25619 flow. Second operand 7 states and 2005 transitions. [2023-01-27 20:18:13,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 846 transitions, 28058 flow [2023-01-27 20:18:16,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 846 transitions, 27672 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-27 20:18:16,691 INFO L231 Difference]: Finished difference. Result has 366 places, 773 transitions, 25989 flow [2023-01-27 20:18:16,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25989, PETRI_PLACES=366, PETRI_TRANSITIONS=773} [2023-01-27 20:18:16,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2023-01-27 20:18:16,691 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 773 transitions, 25989 flow [2023-01-27 20:18:16,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:16,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:16,692 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:16,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 20:18:16,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:18:16,894 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:16,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2146257214, now seen corresponding path program 31 times [2023-01-27 20:18:16,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:16,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893436581] [2023-01-27 20:18:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:17,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893436581] [2023-01-27 20:18:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893436581] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:18:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785142493] [2023-01-27 20:18:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:17,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:18:17,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:17,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:18:17,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:18:17,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:17,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 773 transitions, 25989 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:17,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:17,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:17,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:21,805 INFO L130 PetriNetUnfolder]: 7209/13151 cut-off events. [2023-01-27 20:18:21,806 INFO L131 PetriNetUnfolder]: For 470322/470322 co-relation queries the response was YES. [2023-01-27 20:18:21,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114854 conditions, 13151 events. 7209/13151 cut-off events. For 470322/470322 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 107856 event pairs, 2065 based on Foata normal form. 6/13157 useless extension candidates. Maximal degree in co-relation 114717. Up to 5815 conditions per place. [2023-01-27 20:18:21,967 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 504 selfloop transitions, 329 changer transitions 6/839 dead transitions. [2023-01-27 20:18:21,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 839 transitions, 28358 flow [2023-01-27 20:18:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 20:18:21,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-27 20:18:21,969 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 20:18:21,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 20:18:21,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:21,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 20:18:21,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:21,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:21,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:21,973 INFO L175 Difference]: Start difference. First operand has 366 places, 773 transitions, 25989 flow. Second operand 7 states and 2001 transitions. [2023-01-27 20:18:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 839 transitions, 28358 flow [2023-01-27 20:18:25,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 839 transitions, 27623 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 20:18:25,162 INFO L231 Difference]: Finished difference. Result has 369 places, 772 transitions, 25876 flow [2023-01-27 20:18:25,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25254, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25876, PETRI_PLACES=369, PETRI_TRANSITIONS=772} [2023-01-27 20:18:25,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-01-27 20:18:25,163 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 772 transitions, 25876 flow [2023-01-27 20:18:25,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:25,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:25,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:25,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-01-27 20:18:25,163 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:25,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1309243911, now seen corresponding path program 27 times [2023-01-27 20:18:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127599179] [2023-01-27 20:18:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127599179] [2023-01-27 20:18:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127599179] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:25,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:18:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708631042] [2023-01-27 20:18:25,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:25,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:18:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:18:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:18:25,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:25,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 772 transitions, 25876 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:25,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:25,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:25,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:29,852 INFO L130 PetriNetUnfolder]: 7193/13097 cut-off events. [2023-01-27 20:18:29,853 INFO L131 PetriNetUnfolder]: For 466219/466219 co-relation queries the response was YES. [2023-01-27 20:18:29,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13097 events. 7193/13097 cut-off events. For 466219/466219 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 107250 event pairs, 2179 based on Foata normal form. 4/13101 useless extension candidates. Maximal degree in co-relation 114038. Up to 8557 conditions per place. [2023-01-27 20:18:30,014 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 464 selfloop transitions, 365 changer transitions 0/829 dead transitions. [2023-01-27 20:18:30,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 829 transitions, 27907 flow [2023-01-27 20:18:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:18:30,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:18:30,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:18:30,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:18:30,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:30,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:18:30,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:30,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:30,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:30,020 INFO L175 Difference]: Start difference. First operand has 369 places, 772 transitions, 25876 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:18:30,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 829 transitions, 27907 flow [2023-01-27 20:18:33,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 829 transitions, 27322 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 20:18:33,207 INFO L231 Difference]: Finished difference. Result has 367 places, 772 transitions, 25996 flow [2023-01-27 20:18:33,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25219, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25996, PETRI_PLACES=367, PETRI_TRANSITIONS=772} [2023-01-27 20:18:33,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2023-01-27 20:18:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 772 transitions, 25996 flow [2023-01-27 20:18:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:33,208 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-27 20:18:33,208 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:33,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 772055314, now seen corresponding path program 32 times [2023-01-27 20:18:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526127907] [2023-01-27 20:18:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526127907] [2023-01-27 20:18:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526127907] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:33,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:18:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149123130] [2023-01-27 20:18:33,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:33,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:18:33,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:18:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:18:33,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:33,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 772 transitions, 25996 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:33,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:33,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:33,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:37,902 INFO L130 PetriNetUnfolder]: 7161/13037 cut-off events. [2023-01-27 20:18:37,902 INFO L131 PetriNetUnfolder]: For 472379/472379 co-relation queries the response was YES. [2023-01-27 20:18:38,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114256 conditions, 13037 events. 7161/13037 cut-off events. For 472379/472379 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 106485 event pairs, 2051 based on Foata normal form. 12/13049 useless extension candidates. Maximal degree in co-relation 114122. Up to 5768 conditions per place. [2023-01-27 20:18:38,069 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 505 selfloop transitions, 329 changer transitions 1/835 dead transitions. [2023-01-27 20:18:38,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 835 transitions, 28321 flow [2023-01-27 20:18:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-27 20:18:38,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-27 20:18:38,070 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-27 20:18:38,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-27 20:18:38,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:38,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-27 20:18:38,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:38,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:38,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:38,074 INFO L175 Difference]: Start difference. First operand has 367 places, 772 transitions, 25996 flow. Second operand 7 states and 2000 transitions. [2023-01-27 20:18:38,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 835 transitions, 28321 flow [2023-01-27 20:18:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 835 transitions, 27802 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:18:41,543 INFO L231 Difference]: Finished difference. Result has 372 places, 770 transitions, 26072 flow [2023-01-27 20:18:41,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25442, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=372, PETRI_TRANSITIONS=770} [2023-01-27 20:18:41,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-27 20:18:41,544 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 770 transitions, 26072 flow [2023-01-27 20:18:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:41,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:41,544 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:41,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-01-27 20:18:41,544 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:41,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash 129870617, now seen corresponding path program 28 times [2023-01-27 20:18:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987767966] [2023-01-27 20:18:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987767966] [2023-01-27 20:18:41,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987767966] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:41,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:41,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:18:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722168287] [2023-01-27 20:18:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:41,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:18:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:18:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:18:41,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:41,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 770 transitions, 26072 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:41,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:41,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:41,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:46,198 INFO L130 PetriNetUnfolder]: 7148/13006 cut-off events. [2023-01-27 20:18:46,198 INFO L131 PetriNetUnfolder]: For 476231/476231 co-relation queries the response was YES. [2023-01-27 20:18:46,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113886 conditions, 13006 events. 7148/13006 cut-off events. For 476231/476231 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 106206 event pairs, 2163 based on Foata normal form. 4/13010 useless extension candidates. Maximal degree in co-relation 113751. Up to 8497 conditions per place. [2023-01-27 20:18:46,363 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 457 selfloop transitions, 360 changer transitions 4/821 dead transitions. [2023-01-27 20:18:46,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 821 transitions, 28087 flow [2023-01-27 20:18:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 20:18:46,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-27 20:18:46,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 20:18:46,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 20:18:46,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:46,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 20:18:46,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:46,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:46,370 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:46,370 INFO L175 Difference]: Start difference. First operand has 372 places, 770 transitions, 26072 flow. Second operand 7 states and 2001 transitions. [2023-01-27 20:18:46,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 821 transitions, 28087 flow [2023-01-27 20:18:49,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 821 transitions, 27694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 20:18:49,726 INFO L231 Difference]: Finished difference. Result has 376 places, 769 transitions, 26368 flow [2023-01-27 20:18:49,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25679, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26368, PETRI_PLACES=376, PETRI_TRANSITIONS=769} [2023-01-27 20:18:49,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2023-01-27 20:18:49,727 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 769 transitions, 26368 flow [2023-01-27 20:18:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:49,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:49,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:49,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-01-27 20:18:49,728 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:49,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1956490682, now seen corresponding path program 33 times [2023-01-27 20:18:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678191642] [2023-01-27 20:18:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678191642] [2023-01-27 20:18:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678191642] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:49,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:49,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:18:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113736803] [2023-01-27 20:18:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:49,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:18:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:18:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:18:49,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:49,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 769 transitions, 26368 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:49,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:49,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:49,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:54,328 INFO L130 PetriNetUnfolder]: 7135/12975 cut-off events. [2023-01-27 20:18:54,328 INFO L131 PetriNetUnfolder]: For 485554/485554 co-relation queries the response was YES. [2023-01-27 20:18:54,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114241 conditions, 12975 events. 7135/12975 cut-off events. For 485554/485554 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 105636 event pairs, 2033 based on Foata normal form. 8/12983 useless extension candidates. Maximal degree in co-relation 114106. Up to 5746 conditions per place. [2023-01-27 20:18:54,488 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 498 selfloop transitions, 333 changer transitions 0/831 dead transitions. [2023-01-27 20:18:54,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 831 transitions, 28810 flow [2023-01-27 20:18:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:18:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:18:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:18:54,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:18:54,490 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:18:54,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:18:54,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:54,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:18:54,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:54,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:54,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:54,493 INFO L175 Difference]: Start difference. First operand has 376 places, 769 transitions, 26368 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:18:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 831 transitions, 28810 flow [2023-01-27 20:18:57,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 831 transitions, 28070 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-27 20:18:57,879 INFO L231 Difference]: Finished difference. Result has 372 places, 771 transitions, 26419 flow [2023-01-27 20:18:57,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26419, PETRI_PLACES=372, PETRI_TRANSITIONS=771} [2023-01-27 20:18:57,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-27 20:18:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 771 transitions, 26419 flow [2023-01-27 20:18:57,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:57,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:57,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-01-27 20:18:57,880 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:57,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1288660147, now seen corresponding path program 29 times [2023-01-27 20:18:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123070336] [2023-01-27 20:18:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:18:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123070336] [2023-01-27 20:18:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123070336] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:18:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:18:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:18:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988530664] [2023-01-27 20:18:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:18:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:18:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:18:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:18:58,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:18:58,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 771 transitions, 26419 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:58,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:58,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:18:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:02,452 INFO L130 PetriNetUnfolder]: 7092/12888 cut-off events. [2023-01-27 20:19:02,452 INFO L131 PetriNetUnfolder]: For 482954/482954 co-relation queries the response was YES. [2023-01-27 20:19:02,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113246 conditions, 12888 events. 7092/12888 cut-off events. For 482954/482954 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 104889 event pairs, 2167 based on Foata normal form. 26/12914 useless extension candidates. Maximal degree in co-relation 113114. Up to 8471 conditions per place. [2023-01-27 20:19:02,620 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 455 selfloop transitions, 367 changer transitions 0/822 dead transitions. [2023-01-27 20:19:02,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 822 transitions, 28451 flow [2023-01-27 20:19:02,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:19:02,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:19:02,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:19:02,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:19:02,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:02,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:19:02,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:02,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:02,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:02,625 INFO L175 Difference]: Start difference. First operand has 372 places, 771 transitions, 26419 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:19:02,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 822 transitions, 28451 flow [2023-01-27 20:19:06,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 822 transitions, 27787 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-27 20:19:06,047 INFO L231 Difference]: Finished difference. Result has 374 places, 772 transitions, 26523 flow [2023-01-27 20:19:06,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25735, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26523, PETRI_PLACES=374, PETRI_TRANSITIONS=772} [2023-01-27 20:19:06,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2023-01-27 20:19:06,047 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 772 transitions, 26523 flow [2023-01-27 20:19:06,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:06,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:06,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:06,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-01-27 20:19:06,048 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:06,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1855671599, now seen corresponding path program 30 times [2023-01-27 20:19:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091084212] [2023-01-27 20:19:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091084212] [2023-01-27 20:19:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091084212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:19:06,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:19:06,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:19:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610983353] [2023-01-27 20:19:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:06,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:19:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:19:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:19:06,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:06,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 772 transitions, 26523 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:06,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:06,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:10,719 INFO L130 PetriNetUnfolder]: 7072/12844 cut-off events. [2023-01-27 20:19:10,719 INFO L131 PetriNetUnfolder]: For 481441/481441 co-relation queries the response was YES. [2023-01-27 20:19:10,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 12844 events. 7072/12844 cut-off events. For 481441/481441 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 104359 event pairs, 2165 based on Foata normal form. 8/12852 useless extension candidates. Maximal degree in co-relation 113116. Up to 8471 conditions per place. [2023-01-27 20:19:10,888 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 460 selfloop transitions, 362 changer transitions 1/823 dead transitions. [2023-01-27 20:19:10,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 823 transitions, 28481 flow [2023-01-27 20:19:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-27 20:19:10,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-27 20:19:10,890 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-27 20:19:10,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-27 20:19:10,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:10,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-27 20:19:10,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:10,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:10,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:10,894 INFO L175 Difference]: Start difference. First operand has 374 places, 772 transitions, 26523 flow. Second operand 7 states and 2004 transitions. [2023-01-27 20:19:10,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 823 transitions, 28481 flow [2023-01-27 20:19:14,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 823 transitions, 27770 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 20:19:14,342 INFO L231 Difference]: Finished difference. Result has 377 places, 770 transitions, 26454 flow [2023-01-27 20:19:14,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25759, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26454, PETRI_PLACES=377, PETRI_TRANSITIONS=770} [2023-01-27 20:19:14,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-27 20:19:14,343 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 770 transitions, 26454 flow [2023-01-27 20:19:14,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:14,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:14,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:14,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-01-27 20:19:14,344 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:14,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash 885212803, now seen corresponding path program 31 times [2023-01-27 20:19:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:14,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739551618] [2023-01-27 20:19:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:14,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739551618] [2023-01-27 20:19:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739551618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:19:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:19:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:19:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338311384] [2023-01-27 20:19:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:19:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:19:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:19:14,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:14,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 770 transitions, 26454 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:14,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:14,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:14,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:18,967 INFO L130 PetriNetUnfolder]: 7057/12813 cut-off events. [2023-01-27 20:19:18,967 INFO L131 PetriNetUnfolder]: For 481095/481095 co-relation queries the response was YES. [2023-01-27 20:19:19,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112933 conditions, 12813 events. 7057/12813 cut-off events. For 481095/481095 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 104000 event pairs, 2155 based on Foata normal form. 10/12823 useless extension candidates. Maximal degree in co-relation 112799. Up to 8471 conditions per place. [2023-01-27 20:19:19,129 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 456 selfloop transitions, 365 changer transitions 0/821 dead transitions. [2023-01-27 20:19:19,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 821 transitions, 28471 flow [2023-01-27 20:19:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-27 20:19:19,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-27 20:19:19,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-27 20:19:19,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-27 20:19:19,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:19,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-27 20:19:19,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:19,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:19,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:19,135 INFO L175 Difference]: Start difference. First operand has 377 places, 770 transitions, 26454 flow. Second operand 7 states and 2003 transitions. [2023-01-27 20:19:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 821 transitions, 28471 flow [2023-01-27 20:19:22,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 821 transitions, 27766 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-27 20:19:22,686 INFO L231 Difference]: Finished difference. Result has 377 places, 772 transitions, 26518 flow [2023-01-27 20:19:22,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26518, PETRI_PLACES=377, PETRI_TRANSITIONS=772} [2023-01-27 20:19:22,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-27 20:19:22,687 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 772 transitions, 26518 flow [2023-01-27 20:19:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:22,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:22,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:22,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-27 20:19:22,688 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:22,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1581748409, now seen corresponding path program 32 times [2023-01-27 20:19:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:22,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499292265] [2023-01-27 20:19:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:22,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499292265] [2023-01-27 20:19:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499292265] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:19:22,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:19:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:19:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224435348] [2023-01-27 20:19:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:22,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:19:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:19:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:19:22,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:22,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 772 transitions, 26518 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:22,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:22,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:22,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:28,154 INFO L130 PetriNetUnfolder]: 8534/15680 cut-off events. [2023-01-27 20:19:28,155 INFO L131 PetriNetUnfolder]: For 578296/578296 co-relation queries the response was YES. [2023-01-27 20:19:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135815 conditions, 15680 events. 8534/15680 cut-off events. For 578296/578296 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 132955 event pairs, 1957 based on Foata normal form. 22/15702 useless extension candidates. Maximal degree in co-relation 135683. Up to 7742 conditions per place. [2023-01-27 20:19:28,354 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 727 selfloop transitions, 238 changer transitions 1/966 dead transitions. [2023-01-27 20:19:28,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 32858 flow [2023-01-27 20:19:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-27 20:19:28,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-27 20:19:28,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-27 20:19:28,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-27 20:19:28,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:28,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-27 20:19:28,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:28,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:28,359 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:28,359 INFO L175 Difference]: Start difference. First operand has 377 places, 772 transitions, 26518 flow. Second operand 7 states and 2008 transitions. [2023-01-27 20:19:28,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 32858 flow [2023-01-27 20:19:32,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 966 transitions, 32018 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 20:19:32,849 INFO L231 Difference]: Finished difference. Result has 382 places, 832 transitions, 28489 flow [2023-01-27 20:19:32,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28489, PETRI_PLACES=382, PETRI_TRANSITIONS=832} [2023-01-27 20:19:32,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2023-01-27 20:19:32,850 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 832 transitions, 28489 flow [2023-01-27 20:19:32,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:32,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:32,850 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:32,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-01-27 20:19:32,850 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:32,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 612043710, now seen corresponding path program 34 times [2023-01-27 20:19:32,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:32,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867304032] [2023-01-27 20:19:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:32,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:33,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867304032] [2023-01-27 20:19:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867304032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:19:33,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:19:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:19:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289052018] [2023-01-27 20:19:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:33,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:19:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:19:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:19:33,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:33,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 832 transitions, 28489 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:33,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:33,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:33,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:38,678 INFO L130 PetriNetUnfolder]: 8517/15645 cut-off events. [2023-01-27 20:19:38,678 INFO L131 PetriNetUnfolder]: For 584379/584379 co-relation queries the response was YES. [2023-01-27 20:19:38,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 15645 events. 8517/15645 cut-off events. For 584379/584379 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 132610 event pairs, 3455 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 137032. Up to 11873 conditions per place. [2023-01-27 20:19:38,898 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 671 selfloop transitions, 228 changer transitions 9/908 dead transitions. [2023-01-27 20:19:38,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 908 transitions, 30994 flow [2023-01-27 20:19:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-01-27 20:19:38,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718732629238466 [2023-01-27 20:19:38,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-01-27 20:19:38,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-01-27 20:19:38,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:38,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-01-27 20:19:38,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:38,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:38,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:38,904 INFO L175 Difference]: Start difference. First operand has 382 places, 832 transitions, 28489 flow. Second operand 7 states and 2007 transitions. [2023-01-27 20:19:38,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 908 transitions, 30994 flow [2023-01-27 20:19:43,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 908 transitions, 30707 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-01-27 20:19:43,386 INFO L231 Difference]: Finished difference. Result has 388 places, 835 transitions, 28711 flow [2023-01-27 20:19:43,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28161, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28711, PETRI_PLACES=388, PETRI_TRANSITIONS=835} [2023-01-27 20:19:43,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2023-01-27 20:19:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 835 transitions, 28711 flow [2023-01-27 20:19:43,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:43,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:43,387 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-27 20:19:43,387 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:43,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1055451217, now seen corresponding path program 33 times [2023-01-27 20:19:43,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:43,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284329790] [2023-01-27 20:19:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284329790] [2023-01-27 20:19:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284329790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:19:43,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:19:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:19:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826324575] [2023-01-27 20:19:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:43,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:19:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:19:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:19:43,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:43,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 835 transitions, 28711 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:43,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:43,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:43,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:49,642 INFO L130 PetriNetUnfolder]: 9298/17120 cut-off events. [2023-01-27 20:19:49,642 INFO L131 PetriNetUnfolder]: For 621787/621787 co-relation queries the response was YES. [2023-01-27 20:19:49,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 17120 events. 9298/17120 cut-off events. For 621787/621787 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 147417 event pairs, 1918 based on Foata normal form. 16/17136 useless extension candidates. Maximal degree in co-relation 148974. Up to 7742 conditions per place. [2023-01-27 20:19:49,861 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 706 selfloop transitions, 262 changer transitions 0/968 dead transitions. [2023-01-27 20:19:49,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 968 transitions, 33248 flow [2023-01-27 20:19:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:19:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:19:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-27 20:19:49,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-27 20:19:49,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-27 20:19:49,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-27 20:19:49,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:49,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-27 20:19:49,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:49,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:49,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:49,867 INFO L175 Difference]: Start difference. First operand has 388 places, 835 transitions, 28711 flow. Second operand 7 states and 2000 transitions. [2023-01-27 20:19:49,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 968 transitions, 33248 flow [2023-01-27 20:19:55,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 968 transitions, 32879 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-27 20:19:55,117 INFO L231 Difference]: Finished difference. Result has 393 places, 859 transitions, 29888 flow [2023-01-27 20:19:55,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28296, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29888, PETRI_PLACES=393, PETRI_TRANSITIONS=859} [2023-01-27 20:19:55,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-01-27 20:19:55,118 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 859 transitions, 29888 flow [2023-01-27 20:19:55,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:55,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:19:55,118 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:19:55,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-01-27 20:19:55,118 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:19:55,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:19:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1355786162, now seen corresponding path program 35 times [2023-01-27 20:19:55,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:19:55,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563490926] [2023-01-27 20:19:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:19:55,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:19:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:19:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:19:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563490926] [2023-01-27 20:19:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563490926] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:19:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137672369] [2023-01-27 20:19:55,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:19:55,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:19:55,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:19:55,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:19:55,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:19:55,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:19:55,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:19:55,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:19:55,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:19:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:55,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:19:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:19:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137672369] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:19:55,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:19:55,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-27 20:19:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110246140] [2023-01-27 20:19:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:19:55,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:19:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:19:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:19:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:19:55,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:19:55,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 859 transitions, 29888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:55,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:19:55,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:19:55,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:20:02,181 INFO L130 PetriNetUnfolder]: 9310/17150 cut-off events. [2023-01-27 20:20:02,181 INFO L131 PetriNetUnfolder]: For 650631/650631 co-relation queries the response was YES. [2023-01-27 20:20:02,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151523 conditions, 17150 events. 9310/17150 cut-off events. For 650631/650631 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147813 event pairs, 3934 based on Foata normal form. 8/17158 useless extension candidates. Maximal degree in co-relation 151383. Up to 13370 conditions per place. [2023-01-27 20:20:02,408 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 692 selfloop transitions, 238 changer transitions 0/930 dead transitions. [2023-01-27 20:20:02,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 930 transitions, 32545 flow [2023-01-27 20:20:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:20:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:20:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-27 20:20:02,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-27 20:20:02,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-27 20:20:02,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-27 20:20:02,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:20:02,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-27 20:20:02,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:02,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:02,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:02,413 INFO L175 Difference]: Start difference. First operand has 393 places, 859 transitions, 29888 flow. Second operand 7 states and 2010 transitions. [2023-01-27 20:20:02,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 930 transitions, 32545 flow [2023-01-27 20:20:07,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 930 transitions, 32274 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-01-27 20:20:07,481 INFO L231 Difference]: Finished difference. Result has 399 places, 872 transitions, 30500 flow [2023-01-27 20:20:07,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29619, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30500, PETRI_PLACES=399, PETRI_TRANSITIONS=872} [2023-01-27 20:20:07,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-01-27 20:20:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 872 transitions, 30500 flow [2023-01-27 20:20:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:07,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:07,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:07,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 20:20:07,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-01-27 20:20:07,687 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:07,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2100689833, now seen corresponding path program 34 times [2023-01-27 20:20:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762023465] [2023-01-27 20:20:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:20:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762023465] [2023-01-27 20:20:07,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762023465] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:20:07,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:20:07,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:20:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807380854] [2023-01-27 20:20:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:20:07,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:20:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:20:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:20:07,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:20:07,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 872 transitions, 30500 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:07,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:07,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:20:07,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:20:14,510 INFO L130 PetriNetUnfolder]: 9359/17219 cut-off events. [2023-01-27 20:20:14,511 INFO L131 PetriNetUnfolder]: For 649363/649363 co-relation queries the response was YES. [2023-01-27 20:20:14,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152449 conditions, 17219 events. 9359/17219 cut-off events. For 649363/649363 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 148189 event pairs, 2406 based on Foata normal form. 10/17229 useless extension candidates. Maximal degree in co-relation 152307. Up to 7845 conditions per place. [2023-01-27 20:20:14,753 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 675 selfloop transitions, 293 changer transitions 0/968 dead transitions. [2023-01-27 20:20:14,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 968 transitions, 34036 flow [2023-01-27 20:20:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:20:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:20:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:20:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:20:14,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:20:14,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:20:14,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:20:14,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:20:14,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:14,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:14,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:14,758 INFO L175 Difference]: Start difference. First operand has 399 places, 872 transitions, 30500 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:20:14,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 968 transitions, 34036 flow [2023-01-27 20:20:20,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 968 transitions, 33440 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-01-27 20:20:20,058 INFO L231 Difference]: Finished difference. Result has 402 places, 889 transitions, 31149 flow [2023-01-27 20:20:20,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31149, PETRI_PLACES=402, PETRI_TRANSITIONS=889} [2023-01-27 20:20:20,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2023-01-27 20:20:20,058 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 889 transitions, 31149 flow [2023-01-27 20:20:20,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:20,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:20,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-01-27 20:20:20,059 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:20,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1249926018, now seen corresponding path program 36 times [2023-01-27 20:20:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543113958] [2023-01-27 20:20:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:20:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543113958] [2023-01-27 20:20:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543113958] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:20:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:20:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:20:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571301845] [2023-01-27 20:20:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:20:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:20:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:20:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:20:20,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:20:20,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 889 transitions, 31149 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:20,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:20,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:20:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:20:27,171 INFO L130 PetriNetUnfolder]: 9365/17233 cut-off events. [2023-01-27 20:20:27,171 INFO L131 PetriNetUnfolder]: For 664120/664120 co-relation queries the response was YES. [2023-01-27 20:20:27,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152788 conditions, 17233 events. 9365/17233 cut-off events. For 664120/664120 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 149184 event pairs, 1724 based on Foata normal form. 12/17245 useless extension candidates. Maximal degree in co-relation 152647. Up to 7166 conditions per place. [2023-01-27 20:20:27,401 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 709 selfloop transitions, 298 changer transitions 1/1008 dead transitions. [2023-01-27 20:20:27,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1008 transitions, 34587 flow [2023-01-27 20:20:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:20:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:20:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2795 transitions. [2023-01-27 20:20:27,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36251621271076523 [2023-01-27 20:20:27,403 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2795 transitions. [2023-01-27 20:20:27,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2795 transitions. [2023-01-27 20:20:27,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:20:27,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2795 transitions. [2023-01-27 20:20:27,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 279.5) internal successors, (2795), 10 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:27,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:27,408 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:27,408 INFO L175 Difference]: Start difference. First operand has 402 places, 889 transitions, 31149 flow. Second operand 10 states and 2795 transitions. [2023-01-27 20:20:27,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1008 transitions, 34587 flow [2023-01-27 20:20:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1008 transitions, 33977 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-01-27 20:20:33,080 INFO L231 Difference]: Finished difference. Result has 408 places, 898 transitions, 31364 flow [2023-01-27 20:20:33,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30502, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31364, PETRI_PLACES=408, PETRI_TRANSITIONS=898} [2023-01-27 20:20:33,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2023-01-27 20:20:33,080 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 898 transitions, 31364 flow [2023-01-27 20:20:33,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:33,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:33,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-01-27 20:20:33,081 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:33,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash 452672000, now seen corresponding path program 37 times [2023-01-27 20:20:33,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256928592] [2023-01-27 20:20:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:20:33,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256928592] [2023-01-27 20:20:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256928592] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:20:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:20:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:20:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784652211] [2023-01-27 20:20:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:20:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:20:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:20:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:20:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:20:33,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 898 transitions, 31364 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:33,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:33,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:20:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:20:39,794 INFO L130 PetriNetUnfolder]: 9348/17196 cut-off events. [2023-01-27 20:20:39,794 INFO L131 PetriNetUnfolder]: For 672418/672418 co-relation queries the response was YES. [2023-01-27 20:20:39,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154706 conditions, 17196 events. 9348/17196 cut-off events. For 672418/672418 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 148024 event pairs, 3899 based on Foata normal form. 6/17202 useless extension candidates. Maximal degree in co-relation 154564. Up to 13439 conditions per place. [2023-01-27 20:20:40,049 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 719 selfloop transitions, 238 changer transitions 9/966 dead transitions. [2023-01-27 20:20:40,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 966 transitions, 34001 flow [2023-01-27 20:20:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:20:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:20:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-27 20:20:40,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-27 20:20:40,051 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-27 20:20:40,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-27 20:20:40,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:20:40,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-27 20:20:40,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:40,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:40,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:40,055 INFO L175 Difference]: Start difference. First operand has 408 places, 898 transitions, 31364 flow. Second operand 7 states and 1996 transitions. [2023-01-27 20:20:40,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 966 transitions, 34001 flow [2023-01-27 20:20:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 966 transitions, 33899 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-27 20:20:45,083 INFO L231 Difference]: Finished difference. Result has 414 places, 900 transitions, 31781 flow [2023-01-27 20:20:45,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31218, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31781, PETRI_PLACES=414, PETRI_TRANSITIONS=900} [2023-01-27 20:20:45,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-01-27 20:20:45,087 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 900 transitions, 31781 flow [2023-01-27 20:20:45,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:45,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:45,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-01-27 20:20:45,087 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:45,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1535935923, now seen corresponding path program 35 times [2023-01-27 20:20:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372278585] [2023-01-27 20:20:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:20:45,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372278585] [2023-01-27 20:20:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372278585] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:20:45,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:20:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:20:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690400125] [2023-01-27 20:20:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:20:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:20:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:20:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:20:45,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:20:45,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 900 transitions, 31781 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:45,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:45,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:20:45,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:20:51,901 INFO L130 PetriNetUnfolder]: 9330/17152 cut-off events. [2023-01-27 20:20:51,901 INFO L131 PetriNetUnfolder]: For 667098/667098 co-relation queries the response was YES. [2023-01-27 20:20:52,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155330 conditions, 17152 events. 9330/17152 cut-off events. For 667098/667098 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147324 event pairs, 2388 based on Foata normal form. 4/17156 useless extension candidates. Maximal degree in co-relation 155186. Up to 7804 conditions per place. [2023-01-27 20:20:52,182 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 678 selfloop transitions, 291 changer transitions 4/973 dead transitions. [2023-01-27 20:20:52,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 973 transitions, 34697 flow [2023-01-27 20:20:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:20:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:20:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1990 transitions. [2023-01-27 20:20:52,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36872336483231427 [2023-01-27 20:20:52,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1990 transitions. [2023-01-27 20:20:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1990 transitions. [2023-01-27 20:20:52,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:20:52,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1990 transitions. [2023-01-27 20:20:52,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.2857142857143) internal successors, (1990), 7 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:52,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:52,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:52,187 INFO L175 Difference]: Start difference. First operand has 414 places, 900 transitions, 31781 flow. Second operand 7 states and 1990 transitions. [2023-01-27 20:20:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 973 transitions, 34697 flow [2023-01-27 20:20:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 973 transitions, 34277 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-27 20:20:57,613 INFO L231 Difference]: Finished difference. Result has 417 places, 898 transitions, 31874 flow [2023-01-27 20:20:57,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31333, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31874, PETRI_PLACES=417, PETRI_TRANSITIONS=898} [2023-01-27 20:20:57,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-01-27 20:20:57,614 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 898 transitions, 31874 flow [2023-01-27 20:20:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:57,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:57,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:57,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-01-27 20:20:57,615 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:57,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1051359184, now seen corresponding path program 38 times [2023-01-27 20:20:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:57,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470389516] [2023-01-27 20:20:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:20:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470389516] [2023-01-27 20:20:57,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470389516] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:20:57,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:20:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:20:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461298396] [2023-01-27 20:20:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:20:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:20:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:20:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:20:57,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:20:57,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 898 transitions, 31874 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:57,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:57,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:20:57,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:04,489 INFO L130 PetriNetUnfolder]: 9295/17085 cut-off events. [2023-01-27 20:21:04,490 INFO L131 PetriNetUnfolder]: For 681570/681570 co-relation queries the response was YES. [2023-01-27 20:21:04,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155216 conditions, 17085 events. 9295/17085 cut-off events. For 681570/681570 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 146769 event pairs, 3959 based on Foata normal form. 12/17097 useless extension candidates. Maximal degree in co-relation 155072. Up to 13417 conditions per place. [2023-01-27 20:21:04,731 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 709 selfloop transitions, 245 changer transitions 1/955 dead transitions. [2023-01-27 20:21:04,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 955 transitions, 34300 flow [2023-01-27 20:21:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-27 20:21:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-27 20:21:04,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-27 20:21:04,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-27 20:21:04,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:04,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-27 20:21:04,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:04,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:04,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:04,737 INFO L175 Difference]: Start difference. First operand has 417 places, 898 transitions, 31874 flow. Second operand 7 states and 1999 transitions. [2023-01-27 20:21:04,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 955 transitions, 34300 flow [2023-01-27 20:21:09,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 955 transitions, 33810 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-27 20:21:09,761 INFO L231 Difference]: Finished difference. Result has 418 places, 900 transitions, 31925 flow [2023-01-27 20:21:09,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31343, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31925, PETRI_PLACES=418, PETRI_TRANSITIONS=900} [2023-01-27 20:21:09,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-01-27 20:21:09,762 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 900 transitions, 31925 flow [2023-01-27 20:21:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:09,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:09,763 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-01-27 20:21:09,763 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:09,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 803032932, now seen corresponding path program 39 times [2023-01-27 20:21:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564548330] [2023-01-27 20:21:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:10,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:10,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564548330] [2023-01-27 20:21:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564548330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:21:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722011430] [2023-01-27 20:21:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:10,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:10,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:21:10,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 900 transitions, 31925 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:10,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:10,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:21:10,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:16,555 INFO L130 PetriNetUnfolder]: 9286/17066 cut-off events. [2023-01-27 20:21:16,555 INFO L131 PetriNetUnfolder]: For 681619/681619 co-relation queries the response was YES. [2023-01-27 20:21:16,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155098 conditions, 17066 events. 9286/17066 cut-off events. For 681619/681619 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 146419 event pairs, 3941 based on Foata normal form. 4/17070 useless extension candidates. Maximal degree in co-relation 154952. Up to 13417 conditions per place. [2023-01-27 20:21:16,792 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 703 selfloop transitions, 246 changer transitions 0/949 dead transitions. [2023-01-27 20:21:16,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 949 transitions, 34223 flow [2023-01-27 20:21:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:21:16,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:21:16,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:21:16,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:21:16,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:16,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:21:16,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:16,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:16,798 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:16,798 INFO L175 Difference]: Start difference. First operand has 418 places, 900 transitions, 31925 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:21:16,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 949 transitions, 34223 flow [2023-01-27 20:21:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 949 transitions, 33543 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-27 20:21:21,904 INFO L231 Difference]: Finished difference. Result has 420 places, 899 transitions, 31738 flow [2023-01-27 20:21:21,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31197, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31738, PETRI_PLACES=420, PETRI_TRANSITIONS=899} [2023-01-27 20:21:21,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-01-27 20:21:21,905 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 899 transitions, 31738 flow [2023-01-27 20:21:21,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:21,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:21,906 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-01-27 20:21:21,906 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:21,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1018710692, now seen corresponding path program 40 times [2023-01-27 20:21:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634249297] [2023-01-27 20:21:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634249297] [2023-01-27 20:21:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634249297] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:21:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613711734] [2023-01-27 20:21:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:21:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:21:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:21:22,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:21:22,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 899 transitions, 31738 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:22,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:22,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:21:22,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:28,547 INFO L130 PetriNetUnfolder]: 9262/17014 cut-off events. [2023-01-27 20:21:28,548 INFO L131 PetriNetUnfolder]: For 671050/671050 co-relation queries the response was YES. [2023-01-27 20:21:28,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154612 conditions, 17014 events. 9262/17014 cut-off events. For 671050/671050 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 146080 event pairs, 3865 based on Foata normal form. 4/17018 useless extension candidates. Maximal degree in co-relation 154466. Up to 13417 conditions per place. [2023-01-27 20:21:28,788 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 238 changer transitions 0/960 dead transitions. [2023-01-27 20:21:28,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 960 transitions, 34139 flow [2023-01-27 20:21:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-27 20:21:28,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-27 20:21:28,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-27 20:21:28,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-27 20:21:28,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:28,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-27 20:21:28,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:28,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:28,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:28,794 INFO L175 Difference]: Start difference. First operand has 420 places, 899 transitions, 31738 flow. Second operand 7 states and 2003 transitions. [2023-01-27 20:21:28,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 960 transitions, 34139 flow [2023-01-27 20:21:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 960 transitions, 33687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:21:33,968 INFO L231 Difference]: Finished difference. Result has 423 places, 897 transitions, 31702 flow [2023-01-27 20:21:33,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31226, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31702, PETRI_PLACES=423, PETRI_TRANSITIONS=897} [2023-01-27 20:21:33,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2023-01-27 20:21:33,969 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 897 transitions, 31702 flow [2023-01-27 20:21:33,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:33,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:33,969 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-01-27 20:21:33,969 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:33,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1059464510, now seen corresponding path program 41 times [2023-01-27 20:21:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783509796] [2023-01-27 20:21:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:34,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783509796] [2023-01-27 20:21:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783509796] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:34,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:21:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124101580] [2023-01-27 20:21:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:34,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:21:34,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 897 transitions, 31702 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:34,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:34,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:21:34,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:40,883 INFO L130 PetriNetUnfolder]: 9246/16984 cut-off events. [2023-01-27 20:21:40,883 INFO L131 PetriNetUnfolder]: For 671428/671428 co-relation queries the response was YES. [2023-01-27 20:21:41,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154519 conditions, 16984 events. 9246/16984 cut-off events. For 671428/671428 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 145768 event pairs, 3863 based on Foata normal form. 6/16990 useless extension candidates. Maximal degree in co-relation 154373. Up to 13417 conditions per place. [2023-01-27 20:21:41,116 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 710 selfloop transitions, 236 changer transitions 6/952 dead transitions. [2023-01-27 20:21:41,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 952 transitions, 34067 flow [2023-01-27 20:21:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:21:41,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:21:41,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:21:41,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:21:41,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:41,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:21:41,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:41,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:41,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:41,127 INFO L175 Difference]: Start difference. First operand has 423 places, 897 transitions, 31702 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:21:41,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 952 transitions, 34067 flow [2023-01-27 20:21:46,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 952 transitions, 33614 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:21:46,137 INFO L231 Difference]: Finished difference. Result has 426 places, 895 transitions, 31646 flow [2023-01-27 20:21:46,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31206, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31646, PETRI_PLACES=426, PETRI_TRANSITIONS=895} [2023-01-27 20:21:46,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2023-01-27 20:21:46,138 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 895 transitions, 31646 flow [2023-01-27 20:21:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:46,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:46,139 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:46,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-01-27 20:21:46,139 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:46,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1803329933, now seen corresponding path program 36 times [2023-01-27 20:21:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656148621] [2023-01-27 20:21:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656148621] [2023-01-27 20:21:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656148621] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:46,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:46,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:21:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285120565] [2023-01-27 20:21:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:46,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:46,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:21:46,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 895 transitions, 31646 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:46,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:46,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:21:46,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:52,655 INFO L130 PetriNetUnfolder]: 9201/16809 cut-off events. [2023-01-27 20:21:52,655 INFO L131 PetriNetUnfolder]: For 664842/664842 co-relation queries the response was YES. [2023-01-27 20:21:52,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153418 conditions, 16809 events. 9201/16809 cut-off events. For 664842/664842 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 142781 event pairs, 2226 based on Foata normal form. 22/16831 useless extension candidates. Maximal degree in co-relation 153272. Up to 8427 conditions per place. [2023-01-27 20:21:52,911 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 713 selfloop transitions, 289 changer transitions 0/1002 dead transitions. [2023-01-27 20:21:52,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1002 transitions, 35250 flow [2023-01-27 20:21:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-27 20:21:52,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-27 20:21:52,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-27 20:21:52,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-27 20:21:52,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:52,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-27 20:21:52,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:52,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:52,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:52,917 INFO L175 Difference]: Start difference. First operand has 426 places, 895 transitions, 31646 flow. Second operand 7 states and 1966 transitions. [2023-01-27 20:21:52,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1002 transitions, 35250 flow [2023-01-27 20:21:57,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1002 transitions, 34762 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 20:21:57,943 INFO L231 Difference]: Finished difference. Result has 428 places, 900 transitions, 32194 flow [2023-01-27 20:21:57,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30962, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32194, PETRI_PLACES=428, PETRI_TRANSITIONS=900} [2023-01-27 20:21:57,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-01-27 20:21:57,944 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 900 transitions, 32194 flow [2023-01-27 20:21:57,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:57,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:57,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:57,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-01-27 20:21:57,945 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:21:57,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash -170138933, now seen corresponding path program 37 times [2023-01-27 20:21:57,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:57,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524108620] [2023-01-27 20:21:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:57,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:21:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524108620] [2023-01-27 20:21:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524108620] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:58,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:58,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:21:58,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864665961] [2023-01-27 20:21:58,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:58,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:58,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:21:58,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 900 transitions, 32194 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:58,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:58,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:21:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:05,012 INFO L130 PetriNetUnfolder]: 9418/17218 cut-off events. [2023-01-27 20:22:05,012 INFO L131 PetriNetUnfolder]: For 698901/698901 co-relation queries the response was YES. [2023-01-27 20:22:05,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158761 conditions, 17218 events. 9418/17218 cut-off events. For 698901/698901 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 147399 event pairs, 1828 based on Foata normal form. 12/17230 useless extension candidates. Maximal degree in co-relation 158613. Up to 6237 conditions per place. [2023-01-27 20:22:05,260 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 673 selfloop transitions, 383 changer transitions 0/1056 dead transitions. [2023-01-27 20:22:05,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1056 transitions, 37704 flow [2023-01-27 20:22:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-27 20:22:05,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-27 20:22:05,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-27 20:22:05,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-27 20:22:05,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:05,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-27 20:22:05,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:05,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:05,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:05,266 INFO L175 Difference]: Start difference. First operand has 428 places, 900 transitions, 32194 flow. Second operand 7 states and 1966 transitions. [2023-01-27 20:22:05,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1056 transitions, 37704 flow [2023-01-27 20:22:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1056 transitions, 36992 flow, removed 146 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:11,018 INFO L231 Difference]: Finished difference. Result has 434 places, 928 transitions, 33793 flow [2023-01-27 20:22:11,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31626, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33793, PETRI_PLACES=434, PETRI_TRANSITIONS=928} [2023-01-27 20:22:11,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-01-27 20:22:11,019 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 928 transitions, 33793 flow [2023-01-27 20:22:11,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:11,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:11,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:11,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-01-27 20:22:11,020 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:11,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1784353919, now seen corresponding path program 38 times [2023-01-27 20:22:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:11,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873876618] [2023-01-27 20:22:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:11,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873876618] [2023-01-27 20:22:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873876618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:11,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:11,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:22:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294643323] [2023-01-27 20:22:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:11,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:22:11,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:22:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:22:11,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:22:11,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 928 transitions, 33793 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:11,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:11,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:22:11,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:18,213 INFO L130 PetriNetUnfolder]: 9326/16990 cut-off events. [2023-01-27 20:22:18,214 INFO L131 PetriNetUnfolder]: For 704711/704711 co-relation queries the response was YES. [2023-01-27 20:22:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157640 conditions, 16990 events. 9326/16990 cut-off events. For 704711/704711 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 144047 event pairs, 2266 based on Foata normal form. 64/17054 useless extension candidates. Maximal degree in co-relation 157489. Up to 7778 conditions per place. [2023-01-27 20:22:18,473 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 724 selfloop transitions, 304 changer transitions 0/1028 dead transitions. [2023-01-27 20:22:18,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1028 transitions, 37326 flow [2023-01-27 20:22:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-27 20:22:18,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-27 20:22:18,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-27 20:22:18,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-27 20:22:18,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:18,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-27 20:22:18,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:18,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:18,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:18,479 INFO L175 Difference]: Start difference. First operand has 434 places, 928 transitions, 33793 flow. Second operand 7 states and 2005 transitions. [2023-01-27 20:22:18,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1028 transitions, 37326 flow [2023-01-27 20:22:24,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1028 transitions, 36655 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:24,338 INFO L231 Difference]: Finished difference. Result has 437 places, 928 transitions, 33795 flow [2023-01-27 20:22:24,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33795, PETRI_PLACES=437, PETRI_TRANSITIONS=928} [2023-01-27 20:22:24,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2023-01-27 20:22:24,339 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 928 transitions, 33795 flow [2023-01-27 20:22:24,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:24,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-01-27 20:22:24,340 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:24,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 569817878, now seen corresponding path program 42 times [2023-01-27 20:22:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:24,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189914505] [2023-01-27 20:22:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:24,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:24,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189914505] [2023-01-27 20:22:24,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189914505] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:24,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:24,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:22:24,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299582565] [2023-01-27 20:22:24,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:24,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:22:24,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:22:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:22:24,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:22:24,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 928 transitions, 33795 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:24,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:22:24,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:31,734 INFO L130 PetriNetUnfolder]: 9702/17682 cut-off events. [2023-01-27 20:22:31,734 INFO L131 PetriNetUnfolder]: For 720005/720005 co-relation queries the response was YES. [2023-01-27 20:22:31,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162442 conditions, 17682 events. 9702/17682 cut-off events. For 720005/720005 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 151144 event pairs, 3934 based on Foata normal form. 8/17690 useless extension candidates. Maximal degree in co-relation 162292. Up to 13464 conditions per place. [2023-01-27 20:22:32,001 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 827 selfloop transitions, 226 changer transitions 0/1053 dead transitions. [2023-01-27 20:22:32,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1053 transitions, 38439 flow [2023-01-27 20:22:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-27 20:22:32,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-27 20:22:32,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-27 20:22:32,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-27 20:22:32,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:32,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-27 20:22:32,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,007 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,007 INFO L175 Difference]: Start difference. First operand has 437 places, 928 transitions, 33795 flow. Second operand 7 states and 2002 transitions. [2023-01-27 20:22:32,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1053 transitions, 38439 flow [2023-01-27 20:22:37,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1053 transitions, 38032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:37,758 INFO L231 Difference]: Finished difference. Result has 443 places, 948 transitions, 34688 flow [2023-01-27 20:22:37,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=33420, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34688, PETRI_PLACES=443, PETRI_TRANSITIONS=948} [2023-01-27 20:22:37,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-01-27 20:22:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 948 transitions, 34688 flow [2023-01-27 20:22:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:37,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:37,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-01-27 20:22:37,759 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:37,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1553665876, now seen corresponding path program 43 times [2023-01-27 20:22:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928589103] [2023-01-27 20:22:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:37,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928589103] [2023-01-27 20:22:37,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928589103] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:37,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:22:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665528488] [2023-01-27 20:22:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:37,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:22:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:22:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:22:37,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:22:37,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 948 transitions, 34688 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:37,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:37,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:22:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:45,365 INFO L130 PetriNetUnfolder]: 9783/18047 cut-off events. [2023-01-27 20:22:45,365 INFO L131 PetriNetUnfolder]: For 737942/737942 co-relation queries the response was YES. [2023-01-27 20:22:45,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165134 conditions, 18047 events. 9783/18047 cut-off events. For 737942/737942 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 157648 event pairs, 3812 based on Foata normal form. 12/18059 useless extension candidates. Maximal degree in co-relation 164981. Up to 13464 conditions per place. [2023-01-27 20:22:45,655 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 777 selfloop transitions, 260 changer transitions 0/1037 dead transitions. [2023-01-27 20:22:45,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 38509 flow [2023-01-27 20:22:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-01-27 20:22:45,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36205299240318695 [2023-01-27 20:22:45,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-01-27 20:22:45,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-01-27 20:22:45,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:45,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-01-27 20:22:45,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,661 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,661 INFO L175 Difference]: Start difference. First operand has 443 places, 948 transitions, 34688 flow. Second operand 7 states and 1954 transitions. [2023-01-27 20:22:45,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 38509 flow [2023-01-27 20:22:52,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1037 transitions, 37991 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-01-27 20:22:52,056 INFO L231 Difference]: Finished difference. Result has 450 places, 969 transitions, 35638 flow [2023-01-27 20:22:52,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=34178, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35638, PETRI_PLACES=450, PETRI_TRANSITIONS=969} [2023-01-27 20:22:52,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-01-27 20:22:52,056 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 969 transitions, 35638 flow [2023-01-27 20:22:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:52,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:52,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-27 20:22:52,057 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:52,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1404244369, now seen corresponding path program 39 times [2023-01-27 20:22:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139364758] [2023-01-27 20:22:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:22:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139364758] [2023-01-27 20:22:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139364758] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:52,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:22:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699232565] [2023-01-27 20:22:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:52,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:22:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:52,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:22:52,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:22:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:22:52,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 969 transitions, 35638 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:52,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:52,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:22:52,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:59,456 INFO L130 PetriNetUnfolder]: 9691/17819 cut-off events. [2023-01-27 20:22:59,456 INFO L131 PetriNetUnfolder]: For 752530/752530 co-relation queries the response was YES. [2023-01-27 20:22:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 17819 events. 9691/17819 cut-off events. For 752530/752530 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 154067 event pairs, 2360 based on Foata normal form. 64/17883 useless extension candidates. Maximal degree in co-relation 164915. Up to 8561 conditions per place. [2023-01-27 20:22:59,830 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 747 selfloop transitions, 315 changer transitions 0/1062 dead transitions. [2023-01-27 20:22:59,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1062 transitions, 38896 flow [2023-01-27 20:22:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:22:59,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:22:59,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:22:59,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:22:59,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:59,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:22:59,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:59,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:59,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:59,836 INFO L175 Difference]: Start difference. First operand has 450 places, 969 transitions, 35638 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:22:59,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1062 transitions, 38896 flow [2023-01-27 20:23:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1062 transitions, 38437 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 20:23:06,133 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 35732 flow [2023-01-27 20:23:06,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35102, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35732, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2023-01-27 20:23:06,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-27 20:23:06,134 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 35732 flow [2023-01-27 20:23:06,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:06,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:06,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-01-27 20:23:06,134 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:06,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash 251251914, now seen corresponding path program 44 times [2023-01-27 20:23:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:06,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453704915] [2023-01-27 20:23:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:06,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:06,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453704915] [2023-01-27 20:23:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453704915] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:23:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669081415] [2023-01-27 20:23:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:06,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:23:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:23:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:23:06,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:23:06,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 35732 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:06,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:23:06,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:13,495 INFO L130 PetriNetUnfolder]: 9680/17786 cut-off events. [2023-01-27 20:23:13,496 INFO L131 PetriNetUnfolder]: For 749678/749678 co-relation queries the response was YES. [2023-01-27 20:23:13,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165032 conditions, 17786 events. 9680/17786 cut-off events. For 749678/749678 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 153970 event pairs, 3970 based on Foata normal form. 8/17794 useless extension candidates. Maximal degree in co-relation 164875. Up to 13236 conditions per place. [2023-01-27 20:23:13,785 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 742 selfloop transitions, 271 changer transitions 0/1013 dead transitions. [2023-01-27 20:23:13,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1013 transitions, 38078 flow [2023-01-27 20:23:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:23:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:23:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-27 20:23:13,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-27 20:23:13,787 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-27 20:23:13,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-27 20:23:13,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:13,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-27 20:23:13,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,791 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 35732 flow. Second operand 7 states and 1995 transitions. [2023-01-27 20:23:13,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1013 transitions, 38078 flow [2023-01-27 20:23:19,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1013 transitions, 37529 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-27 20:23:19,782 INFO L231 Difference]: Finished difference. Result has 452 places, 964 transitions, 35623 flow [2023-01-27 20:23:19,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35623, PETRI_PLACES=452, PETRI_TRANSITIONS=964} [2023-01-27 20:23:19,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-27 20:23:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 964 transitions, 35623 flow [2023-01-27 20:23:19,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:19,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:19,783 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:19,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-01-27 20:23:19,783 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:19,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1180859485, now seen corresponding path program 40 times [2023-01-27 20:23:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:19,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624550918] [2023-01-27 20:23:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:19,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624550918] [2023-01-27 20:23:20,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624550918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:20,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:20,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:23:20,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822882582] [2023-01-27 20:23:20,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:20,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:23:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:23:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:23:20,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:23:20,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 964 transitions, 35623 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:20,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:20,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:23:20,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:27,787 INFO L130 PetriNetUnfolder]: 10063/18572 cut-off events. [2023-01-27 20:23:27,787 INFO L131 PetriNetUnfolder]: For 762819/762819 co-relation queries the response was YES. [2023-01-27 20:23:28,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 18572 events. 10063/18572 cut-off events. For 762819/762819 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 162637 event pairs, 2256 based on Foata normal form. 58/18630 useless extension candidates. Maximal degree in co-relation 170659. Up to 11871 conditions per place. [2023-01-27 20:23:28,078 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 758 selfloop transitions, 338 changer transitions 0/1096 dead transitions. [2023-01-27 20:23:28,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1096 transitions, 40244 flow [2023-01-27 20:23:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:23:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:23:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-27 20:23:28,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-27 20:23:28,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-27 20:23:28,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-27 20:23:28,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:28,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-27 20:23:28,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,084 INFO L175 Difference]: Start difference. First operand has 452 places, 964 transitions, 35623 flow. Second operand 7 states and 2002 transitions. [2023-01-27 20:23:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1096 transitions, 40244 flow [2023-01-27 20:23:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1096 transitions, 39702 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 20:23:34,985 INFO L231 Difference]: Finished difference. Result has 456 places, 997 transitions, 37153 flow [2023-01-27 20:23:34,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37153, PETRI_PLACES=456, PETRI_TRANSITIONS=997} [2023-01-27 20:23:34,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-01-27 20:23:34,986 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 997 transitions, 37153 flow [2023-01-27 20:23:34,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:34,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:34,987 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-01-27 20:23:34,987 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:34,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1004924419, now seen corresponding path program 41 times [2023-01-27 20:23:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189717797] [2023-01-27 20:23:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:35,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189717797] [2023-01-27 20:23:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189717797] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:35,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:23:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566980276] [2023-01-27 20:23:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:23:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:23:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:23:35,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:23:35,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 997 transitions, 37153 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:35,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:35,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:23:35,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:43,051 INFO L130 PetriNetUnfolder]: 10039/18524 cut-off events. [2023-01-27 20:23:43,051 INFO L131 PetriNetUnfolder]: For 786608/786608 co-relation queries the response was YES. [2023-01-27 20:23:43,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 18524 events. 10039/18524 cut-off events. For 786608/786608 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 163177 event pairs, 1386 based on Foata normal form. 12/18536 useless extension candidates. Maximal degree in co-relation 172055. Up to 12189 conditions per place. [2023-01-27 20:23:43,405 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 886 selfloop transitions, 212 changer transitions 3/1101 dead transitions. [2023-01-27 20:23:43,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1101 transitions, 41341 flow [2023-01-27 20:23:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:23:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:23:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1952 transitions. [2023-01-27 20:23:43,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616824161571243 [2023-01-27 20:23:43,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1952 transitions. [2023-01-27 20:23:43,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1952 transitions. [2023-01-27 20:23:43,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:43,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1952 transitions. [2023-01-27 20:23:43,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.85714285714283) internal successors, (1952), 7 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:43,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:43,410 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:43,410 INFO L175 Difference]: Start difference. First operand has 456 places, 997 transitions, 37153 flow. Second operand 7 states and 1952 transitions. [2023-01-27 20:23:43,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1101 transitions, 41341 flow [2023-01-27 20:23:50,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1101 transitions, 40896 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-27 20:23:50,506 INFO L231 Difference]: Finished difference. Result has 462 places, 1005 transitions, 37589 flow [2023-01-27 20:23:50,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=36713, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37589, PETRI_PLACES=462, PETRI_TRANSITIONS=1005} [2023-01-27 20:23:50,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-01-27 20:23:50,507 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1005 transitions, 37589 flow [2023-01-27 20:23:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:50,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:50,508 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-01-27 20:23:50,508 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:50,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1818762133, now seen corresponding path program 42 times [2023-01-27 20:23:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388539651] [2023-01-27 20:23:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:23:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388539651] [2023-01-27 20:23:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388539651] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:23:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080814150] [2023-01-27 20:23:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:50,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:23:50,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:23:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:23:50,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:23:50,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1005 transitions, 37589 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:50,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:50,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:23:50,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:58,731 INFO L130 PetriNetUnfolder]: 10024/18463 cut-off events. [2023-01-27 20:23:58,731 INFO L131 PetriNetUnfolder]: For 801888/801888 co-relation queries the response was YES. [2023-01-27 20:23:58,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173433 conditions, 18463 events. 10024/18463 cut-off events. For 801888/801888 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 161210 event pairs, 2256 based on Foata normal form. 18/18481 useless extension candidates. Maximal degree in co-relation 173272. Up to 11823 conditions per place. [2023-01-27 20:23:59,082 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 767 selfloop transitions, 340 changer transitions 0/1107 dead transitions. [2023-01-27 20:23:59,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1107 transitions, 41291 flow [2023-01-27 20:23:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:23:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:23:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1960 transitions. [2023-01-27 20:23:59,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-27 20:23:59,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1960 transitions. [2023-01-27 20:23:59,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1960 transitions. [2023-01-27 20:23:59,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:59,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1960 transitions. [2023-01-27 20:23:59,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,088 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,088 INFO L175 Difference]: Start difference. First operand has 462 places, 1005 transitions, 37589 flow. Second operand 7 states and 1960 transitions. [2023-01-27 20:23:59,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1107 transitions, 41291 flow [2023-01-27 20:24:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1107 transitions, 40785 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-01-27 20:24:06,455 INFO L231 Difference]: Finished difference. Result has 468 places, 1010 transitions, 38027 flow [2023-01-27 20:24:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37102, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38027, PETRI_PLACES=468, PETRI_TRANSITIONS=1010} [2023-01-27 20:24:06,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-01-27 20:24:06,456 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1010 transitions, 38027 flow [2023-01-27 20:24:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-01-27 20:24:06,457 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:06,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash 650218813, now seen corresponding path program 43 times [2023-01-27 20:24:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:06,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595038258] [2023-01-27 20:24:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595038258] [2023-01-27 20:24:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595038258] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:24:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192341776] [2023-01-27 20:24:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:24:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:24:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:24:06,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:24:06,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1010 transitions, 38027 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:06,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:24:06,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:14,459 INFO L130 PetriNetUnfolder]: 9982/18314 cut-off events. [2023-01-27 20:24:14,459 INFO L131 PetriNetUnfolder]: For 807848/807848 co-relation queries the response was YES. [2023-01-27 20:24:14,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173147 conditions, 18314 events. 9982/18314 cut-off events. For 807848/807848 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158827 event pairs, 2238 based on Foata normal form. 18/18332 useless extension candidates. Maximal degree in co-relation 172984. Up to 11823 conditions per place. [2023-01-27 20:24:14,757 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 766 selfloop transitions, 337 changer transitions 0/1103 dead transitions. [2023-01-27 20:24:14,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1103 transitions, 41393 flow [2023-01-27 20:24:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:24:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:24:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1957 transitions. [2023-01-27 20:24:14,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626088567722809 [2023-01-27 20:24:14,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1957 transitions. [2023-01-27 20:24:14,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1957 transitions. [2023-01-27 20:24:14,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:14,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1957 transitions. [2023-01-27 20:24:14,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.57142857142856) internal successors, (1957), 7 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:14,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:14,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:14,762 INFO L175 Difference]: Start difference. First operand has 468 places, 1010 transitions, 38027 flow. Second operand 7 states and 1957 transitions. [2023-01-27 20:24:14,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1103 transitions, 41393 flow [2023-01-27 20:24:22,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1103 transitions, 40709 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-27 20:24:22,325 INFO L231 Difference]: Finished difference. Result has 472 places, 1010 transitions, 38183 flow [2023-01-27 20:24:22,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37315, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38183, PETRI_PLACES=472, PETRI_TRANSITIONS=1010} [2023-01-27 20:24:22,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-01-27 20:24:22,326 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1010 transitions, 38183 flow [2023-01-27 20:24:22,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:22,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:22,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-01-27 20:24:22,326 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:22,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1198212747, now seen corresponding path program 44 times [2023-01-27 20:24:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:22,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024217902] [2023-01-27 20:24:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:22,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:22,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024217902] [2023-01-27 20:24:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024217902] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:22,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:22,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:24:22,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114600033] [2023-01-27 20:24:22,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:22,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:24:22,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:24:22,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:24:22,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:24:22,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1010 transitions, 38183 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:22,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:22,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:24:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:30,257 INFO L130 PetriNetUnfolder]: 9977/18289 cut-off events. [2023-01-27 20:24:30,257 INFO L131 PetriNetUnfolder]: For 812731/812731 co-relation queries the response was YES. [2023-01-27 20:24:30,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173569 conditions, 18289 events. 9977/18289 cut-off events. For 812731/812731 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158466 event pairs, 2494 based on Foata normal form. 4/18293 useless extension candidates. Maximal degree in co-relation 173404. Up to 8750 conditions per place. [2023-01-27 20:24:30,563 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 357 changer transitions 0/1079 dead transitions. [2023-01-27 20:24:30,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1079 transitions, 41094 flow [2023-01-27 20:24:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:24:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:24:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-27 20:24:30,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-27 20:24:30,565 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-27 20:24:30,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-27 20:24:30,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:30,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-27 20:24:30,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,569 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:30,569 INFO L175 Difference]: Start difference. First operand has 472 places, 1010 transitions, 38183 flow. Second operand 7 states and 2002 transitions. [2023-01-27 20:24:30,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1079 transitions, 41094 flow [2023-01-27 20:24:38,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1079 transitions, 40599 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:24:38,257 INFO L231 Difference]: Finished difference. Result has 477 places, 1012 transitions, 38509 flow [2023-01-27 20:24:38,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37667, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38509, PETRI_PLACES=477, PETRI_TRANSITIONS=1012} [2023-01-27 20:24:38,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2023-01-27 20:24:38,258 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1012 transitions, 38509 flow [2023-01-27 20:24:38,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:38,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:38,258 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:38,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-01-27 20:24:38,258 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:38,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash -816504591, now seen corresponding path program 45 times [2023-01-27 20:24:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:38,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838408209] [2023-01-27 20:24:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:38,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838408209] [2023-01-27 20:24:38,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838408209] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:38,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:38,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:24:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19781020] [2023-01-27 20:24:38,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:38,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:24:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:24:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:24:38,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:24:38,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1012 transitions, 38509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:38,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:38,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:24:38,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:46,420 INFO L130 PetriNetUnfolder]: 10060/18384 cut-off events. [2023-01-27 20:24:46,420 INFO L131 PetriNetUnfolder]: For 846341/846341 co-relation queries the response was YES. [2023-01-27 20:24:46,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175417 conditions, 18384 events. 10060/18384 cut-off events. For 846341/846341 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 158664 event pairs, 2508 based on Foata normal form. 26/18410 useless extension candidates. Maximal degree in co-relation 175250. Up to 8770 conditions per place. [2023-01-27 20:24:46,711 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 392 changer transitions 0/1124 dead transitions. [2023-01-27 20:24:46,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1124 transitions, 43331 flow [2023-01-27 20:24:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:24:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:24:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-27 20:24:46,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-27 20:24:46,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-27 20:24:46,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-27 20:24:46,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:46,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-27 20:24:46,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:46,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:46,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:46,717 INFO L175 Difference]: Start difference. First operand has 477 places, 1012 transitions, 38509 flow. Second operand 7 states and 2004 transitions. [2023-01-27 20:24:46,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1124 transitions, 43331 flow [2023-01-27 20:24:54,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1124 transitions, 42761 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-27 20:24:54,527 INFO L231 Difference]: Finished difference. Result has 483 places, 1048 transitions, 40439 flow [2023-01-27 20:24:54,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37932, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40439, PETRI_PLACES=483, PETRI_TRANSITIONS=1048} [2023-01-27 20:24:54,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-01-27 20:24:54,528 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1048 transitions, 40439 flow [2023-01-27 20:24:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:54,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:54,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:54,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-01-27 20:24:54,529 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:24:54,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1876950500, now seen corresponding path program 45 times [2023-01-27 20:24:54,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:54,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805105136] [2023-01-27 20:24:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:24:54,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:54,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805105136] [2023-01-27 20:24:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805105136] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:54,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:54,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:24:54,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624609007] [2023-01-27 20:24:54,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:54,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:24:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:24:54,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:24:54,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:24:54,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1048 transitions, 40439 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:54,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:54,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:24:54,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:02,813 INFO L130 PetriNetUnfolder]: 10016/18282 cut-off events. [2023-01-27 20:25:02,813 INFO L131 PetriNetUnfolder]: For 863424/863424 co-relation queries the response was YES. [2023-01-27 20:25:03,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176163 conditions, 18282 events. 10016/18282 cut-off events. For 863424/863424 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 157772 event pairs, 4057 based on Foata normal form. 16/18298 useless extension candidates. Maximal degree in co-relation 175993. Up to 13839 conditions per place. [2023-01-27 20:25:03,121 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 837 selfloop transitions, 269 changer transitions 0/1106 dead transitions. [2023-01-27 20:25:03,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1106 transitions, 43118 flow [2023-01-27 20:25:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:25:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:25:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-27 20:25:03,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-27 20:25:03,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-27 20:25:03,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-27 20:25:03,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:03,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-27 20:25:03,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:03,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:03,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:03,127 INFO L175 Difference]: Start difference. First operand has 483 places, 1048 transitions, 40439 flow. Second operand 7 states and 2010 transitions. [2023-01-27 20:25:03,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1106 transitions, 43118 flow [2023-01-27 20:25:10,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1106 transitions, 42762 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-01-27 20:25:10,843 INFO L231 Difference]: Finished difference. Result has 488 places, 1050 transitions, 40692 flow [2023-01-27 20:25:10,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40083, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40692, PETRI_PLACES=488, PETRI_TRANSITIONS=1050} [2023-01-27 20:25:10,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-01-27 20:25:10,844 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1050 transitions, 40692 flow [2023-01-27 20:25:10,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:10,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-01-27 20:25:10,845 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:25:10,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:10,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1666416104, now seen corresponding path program 46 times [2023-01-27 20:25:10,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:10,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159014352] [2023-01-27 20:25:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:25:11,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159014352] [2023-01-27 20:25:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159014352] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:25:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:25:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:25:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281138877] [2023-01-27 20:25:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:25:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:25:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:25:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:25:11,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:25:11,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1050 transitions, 40692 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:11,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:11,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:25:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:19,220 INFO L130 PetriNetUnfolder]: 10031/18343 cut-off events. [2023-01-27 20:25:19,220 INFO L131 PetriNetUnfolder]: For 865036/865036 co-relation queries the response was YES. [2023-01-27 20:25:19,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176480 conditions, 18343 events. 10031/18343 cut-off events. For 865036/865036 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 158794 event pairs, 3997 based on Foata normal form. 4/18347 useless extension candidates. Maximal degree in co-relation 176309. Up to 13839 conditions per place. [2023-01-27 20:25:19,509 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 874 selfloop transitions, 238 changer transitions 0/1112 dead transitions. [2023-01-27 20:25:19,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1112 transitions, 43649 flow [2023-01-27 20:25:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:25:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:25:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2023-01-27 20:25:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702056698165648 [2023-01-27 20:25:19,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2023-01-27 20:25:19,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2023-01-27 20:25:19,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:19,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2023-01-27 20:25:19,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:19,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:19,514 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:19,514 INFO L175 Difference]: Start difference. First operand has 488 places, 1050 transitions, 40692 flow. Second operand 7 states and 1998 transitions. [2023-01-27 20:25:19,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1112 transitions, 43649 flow [2023-01-27 20:25:27,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1112 transitions, 43138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:25:27,150 INFO L231 Difference]: Finished difference. Result has 493 places, 1055 transitions, 40918 flow [2023-01-27 20:25:27,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40189, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40918, PETRI_PLACES=493, PETRI_TRANSITIONS=1055} [2023-01-27 20:25:27,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-27 20:25:27,151 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1055 transitions, 40918 flow [2023-01-27 20:25:27,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:27,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:27,151 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:27,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-01-27 20:25:27,151 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:25:27,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash -799839490, now seen corresponding path program 47 times [2023-01-27 20:25:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310204775] [2023-01-27 20:25:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:25:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310204775] [2023-01-27 20:25:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310204775] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:25:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:25:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:25:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476499522] [2023-01-27 20:25:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:25:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:25:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:25:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:25:27,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:25:27,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1055 transitions, 40918 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:27,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:27,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:25:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:35,431 INFO L130 PetriNetUnfolder]: 10029/18331 cut-off events. [2023-01-27 20:25:35,431 INFO L131 PetriNetUnfolder]: For 871630/871630 co-relation queries the response was YES. [2023-01-27 20:25:35,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177602 conditions, 18331 events. 10029/18331 cut-off events. For 871630/871630 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 159365 event pairs, 1802 based on Foata normal form. 4/18335 useless extension candidates. Maximal degree in co-relation 177428. Up to 6972 conditions per place. [2023-01-27 20:25:35,841 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 842 selfloop transitions, 315 changer transitions 1/1158 dead transitions. [2023-01-27 20:25:35,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1158 transitions, 44653 flow [2023-01-27 20:25:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:25:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:25:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2509 transitions. [2023-01-27 20:25:35,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3615794783109958 [2023-01-27 20:25:35,844 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2509 transitions. [2023-01-27 20:25:35,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2509 transitions. [2023-01-27 20:25:35,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:35,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2509 transitions. [2023-01-27 20:25:35,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.77777777777777) internal successors, (2509), 9 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:35,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:35,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:35,848 INFO L175 Difference]: Start difference. First operand has 493 places, 1055 transitions, 40918 flow. Second operand 9 states and 2509 transitions. [2023-01-27 20:25:35,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1158 transitions, 44653 flow [2023-01-27 20:25:44,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1158 transitions, 44435 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-01-27 20:25:44,907 INFO L231 Difference]: Finished difference. Result has 502 places, 1069 transitions, 41977 flow [2023-01-27 20:25:44,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40708, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41977, PETRI_PLACES=502, PETRI_TRANSITIONS=1069} [2023-01-27 20:25:44,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2023-01-27 20:25:44,908 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1069 transitions, 41977 flow [2023-01-27 20:25:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:44,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:44,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:44,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-01-27 20:25:44,908 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:25:44,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1456307273, now seen corresponding path program 46 times [2023-01-27 20:25:44,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:44,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960111423] [2023-01-27 20:25:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:44,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:25:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960111423] [2023-01-27 20:25:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960111423] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:25:45,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:25:45,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:25:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65080622] [2023-01-27 20:25:45,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:25:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:25:45,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:25:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:25:45,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:25:45,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1069 transitions, 41977 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:45,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:45,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:25:45,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:53,307 INFO L130 PetriNetUnfolder]: 10013/18289 cut-off events. [2023-01-27 20:25:53,307 INFO L131 PetriNetUnfolder]: For 891965/891965 co-relation queries the response was YES. [2023-01-27 20:25:53,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180532 conditions, 18289 events. 10013/18289 cut-off events. For 891965/891965 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 157953 event pairs, 2500 based on Foata normal form. 10/18299 useless extension candidates. Maximal degree in co-relation 180356. Up to 8817 conditions per place. [2023-01-27 20:25:53,636 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 408 changer transitions 0/1140 dead transitions. [2023-01-27 20:25:53,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1140 transitions, 45212 flow [2023-01-27 20:25:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:25:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:25:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-27 20:25:53,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-27 20:25:53,638 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-27 20:25:53,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-27 20:25:53,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:53,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-27 20:25:53,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:53,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:53,642 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:53,642 INFO L175 Difference]: Start difference. First operand has 502 places, 1069 transitions, 41977 flow. Second operand 7 states and 2002 transitions. [2023-01-27 20:25:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1140 transitions, 45212 flow [2023-01-27 20:26:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1140 transitions, 44105 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-01-27 20:26:02,485 INFO L231 Difference]: Finished difference. Result has 497 places, 1075 transitions, 42023 flow [2023-01-27 20:26:02,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40790, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42023, PETRI_PLACES=497, PETRI_TRANSITIONS=1075} [2023-01-27 20:26:02,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2023-01-27 20:26:02,486 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1075 transitions, 42023 flow [2023-01-27 20:26:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:02,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:02,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:02,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-01-27 20:26:02,487 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:02,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1523969853, now seen corresponding path program 47 times [2023-01-27 20:26:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614906297] [2023-01-27 20:26:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614906297] [2023-01-27 20:26:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614906297] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:26:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040358618] [2023-01-27 20:26:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:02,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:26:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:26:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:26:02,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:26:02,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1075 transitions, 42023 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:02,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:02,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:26:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:10,652 INFO L130 PetriNetUnfolder]: 10031/18295 cut-off events. [2023-01-27 20:26:10,652 INFO L131 PetriNetUnfolder]: For 858050/858050 co-relation queries the response was YES. [2023-01-27 20:26:10,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178444 conditions, 18295 events. 10031/18295 cut-off events. For 858050/858050 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 157672 event pairs, 2488 based on Foata normal form. 6/18301 useless extension candidates. Maximal degree in co-relation 178273. Up to 8833 conditions per place. [2023-01-27 20:26:10,938 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 737 selfloop transitions, 412 changer transitions 0/1149 dead transitions. [2023-01-27 20:26:10,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1149 transitions, 45618 flow [2023-01-27 20:26:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:26:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:26:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2023-01-27 20:26:10,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702056698165648 [2023-01-27 20:26:10,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2023-01-27 20:26:10,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2023-01-27 20:26:10,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:10,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2023-01-27 20:26:10,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:10,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:10,944 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:10,944 INFO L175 Difference]: Start difference. First operand has 497 places, 1075 transitions, 42023 flow. Second operand 7 states and 1998 transitions. [2023-01-27 20:26:10,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1149 transitions, 45618 flow [2023-01-27 20:26:19,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1149 transitions, 44664 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-01-27 20:26:19,115 INFO L231 Difference]: Finished difference. Result has 493 places, 1086 transitions, 42557 flow [2023-01-27 20:26:19,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41018, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42557, PETRI_PLACES=493, PETRI_TRANSITIONS=1086} [2023-01-27 20:26:19,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-27 20:26:19,116 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1086 transitions, 42557 flow [2023-01-27 20:26:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:19,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:19,117 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:19,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-01-27 20:26:19,117 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:19,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1855592650, now seen corresponding path program 48 times [2023-01-27 20:26:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619158886] [2023-01-27 20:26:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619158886] [2023-01-27 20:26:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619158886] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:19,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:19,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:26:19,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149467408] [2023-01-27 20:26:19,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:19,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:26:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:19,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:26:19,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:26:19,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:26:19,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1086 transitions, 42557 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:19,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:19,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:26:19,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:27,374 INFO L130 PetriNetUnfolder]: 10007/18243 cut-off events. [2023-01-27 20:26:27,374 INFO L131 PetriNetUnfolder]: For 843078/843078 co-relation queries the response was YES. [2023-01-27 20:26:27,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177162 conditions, 18243 events. 10007/18243 cut-off events. For 843078/843078 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 157203 event pairs, 4038 based on Foata normal form. 4/18247 useless extension candidates. Maximal degree in co-relation 176995. Up to 13810 conditions per place. [2023-01-27 20:26:27,663 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 865 selfloop transitions, 273 changer transitions 0/1138 dead transitions. [2023-01-27 20:26:27,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1138 transitions, 45167 flow [2023-01-27 20:26:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:26:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:26:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-27 20:26:27,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-27 20:26:27,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-27 20:26:27,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-27 20:26:27,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:27,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-27 20:26:27,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:27,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:27,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:27,670 INFO L175 Difference]: Start difference. First operand has 493 places, 1086 transitions, 42557 flow. Second operand 7 states and 2006 transitions. [2023-01-27 20:26:27,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1138 transitions, 45167 flow [2023-01-27 20:26:35,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1138 transitions, 44418 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-01-27 20:26:35,111 INFO L231 Difference]: Finished difference. Result has 493 places, 1085 transitions, 42313 flow [2023-01-27 20:26:35,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41734, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42313, PETRI_PLACES=493, PETRI_TRANSITIONS=1085} [2023-01-27 20:26:35,112 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-27 20:26:35,112 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1085 transitions, 42313 flow [2023-01-27 20:26:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:35,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:35,113 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:35,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-01-27 20:26:35,113 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:35,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash -422916263, now seen corresponding path program 48 times [2023-01-27 20:26:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721123890] [2023-01-27 20:26:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:35,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721123890] [2023-01-27 20:26:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721123890] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:35,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:35,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:26:35,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053081848] [2023-01-27 20:26:35,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:26:35,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:26:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:26:35,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-27 20:26:35,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1085 transitions, 42313 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:35,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:35,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-27 20:26:35,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:43,374 INFO L130 PetriNetUnfolder]: 9997/18221 cut-off events. [2023-01-27 20:26:43,375 INFO L131 PetriNetUnfolder]: For 834612/834612 co-relation queries the response was YES. [2023-01-27 20:26:43,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176949 conditions, 18221 events. 9997/18221 cut-off events. For 834612/834612 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 157717 event pairs, 1362 based on Foata normal form. 4/18225 useless extension candidates. Maximal degree in co-relation 176784. Up to 11902 conditions per place. [2023-01-27 20:26:43,731 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 924 selfloop transitions, 242 changer transitions 2/1168 dead transitions. [2023-01-27 20:26:43,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1168 transitions, 46042 flow [2023-01-27 20:26:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:26:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:26:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1951 transitions. [2023-01-27 20:26:43,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361497128034093 [2023-01-27 20:26:43,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1951 transitions. [2023-01-27 20:26:43,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1951 transitions. [2023-01-27 20:26:43,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:43,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1951 transitions. [2023-01-27 20:26:43,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.7142857142857) internal successors, (1951), 7 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:43,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:43,736 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:43,736 INFO L175 Difference]: Start difference. First operand has 493 places, 1085 transitions, 42313 flow. Second operand 7 states and 1951 transitions. [2023-01-27 20:26:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1168 transitions, 46042 flow [2023-01-27 20:26:51,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1168 transitions, 45543 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:26:51,455 INFO L231 Difference]: Finished difference. Result has 496 places, 1082 transitions, 42184 flow [2023-01-27 20:26:51,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41742, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42184, PETRI_PLACES=496, PETRI_TRANSITIONS=1082} [2023-01-27 20:26:51,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2023-01-27 20:26:51,455 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1082 transitions, 42184 flow [2023-01-27 20:26:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:51,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:51,456 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:51,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-01-27 20:26:51,456 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:26:51,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1141164956, now seen corresponding path program 49 times [2023-01-27 20:26:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707438272] [2023-01-27 20:26:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:26:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707438272] [2023-01-27 20:26:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707438272] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:51,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:51,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:26:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689015851] [2023-01-27 20:26:51,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:51,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:26:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:26:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:26:51,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:26:51,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1082 transitions, 42184 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:51,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:51,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:26:51,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:59,377 INFO L130 PetriNetUnfolder]: 9978/18184 cut-off events. [2023-01-27 20:26:59,378 INFO L131 PetriNetUnfolder]: For 851743/851743 co-relation queries the response was YES. [2023-01-27 20:26:59,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177828 conditions, 18184 events. 9978/18184 cut-off events. For 851743/851743 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 156524 event pairs, 4048 based on Foata normal form. 6/18190 useless extension candidates. Maximal degree in co-relation 177663. Up to 13788 conditions per place. [2023-01-27 20:26:59,663 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 855 selfloop transitions, 269 changer transitions 6/1130 dead transitions. [2023-01-27 20:26:59,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1130 transitions, 44754 flow [2023-01-27 20:26:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:26:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:26:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 20:26:59,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-27 20:26:59,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 20:26:59,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 20:26:59,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:59,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 20:26:59,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:59,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:59,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:59,670 INFO L175 Difference]: Start difference. First operand has 496 places, 1082 transitions, 42184 flow. Second operand 7 states and 2001 transitions. [2023-01-27 20:26:59,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1130 transitions, 44754 flow [2023-01-27 20:27:07,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1130 transitions, 44593 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-27 20:27:07,280 INFO L231 Difference]: Finished difference. Result has 500 places, 1080 transitions, 42504 flow [2023-01-27 20:27:07,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41999, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42504, PETRI_PLACES=500, PETRI_TRANSITIONS=1080} [2023-01-27 20:27:07,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2023-01-27 20:27:07,281 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1080 transitions, 42504 flow [2023-01-27 20:27:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:07,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:27:07,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:27:07,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-01-27 20:27:07,282 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:27:07,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:27:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1480506524, now seen corresponding path program 50 times [2023-01-27 20:27:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:27:07,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543025880] [2023-01-27 20:27:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:27:07,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:27:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:27:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:27:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:27:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543025880] [2023-01-27 20:27:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543025880] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:27:07,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:27:07,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:27:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059264540] [2023-01-27 20:27:07,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:27:07,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:27:07,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:27:07,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:27:07,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:27:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:27:07,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1080 transitions, 42504 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:07,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:27:07,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:27:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:15,784 INFO L130 PetriNetUnfolder]: 9945/18117 cut-off events. [2023-01-27 20:27:15,784 INFO L131 PetriNetUnfolder]: For 851810/851810 co-relation queries the response was YES. [2023-01-27 20:27:16,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178149 conditions, 18117 events. 9945/18117 cut-off events. For 851810/851810 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 155712 event pairs, 4034 based on Foata normal form. 12/18129 useless extension candidates. Maximal degree in co-relation 177983. Up to 13788 conditions per place. [2023-01-27 20:27:16,203 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 857 selfloop transitions, 268 changer transitions 1/1126 dead transitions. [2023-01-27 20:27:16,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1126 transitions, 45039 flow [2023-01-27 20:27:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:27:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:27:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-27 20:27:16,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-27 20:27:16,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-27 20:27:16,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-27 20:27:16,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:16,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-27 20:27:16,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:16,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:16,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:16,209 INFO L175 Difference]: Start difference. First operand has 500 places, 1080 transitions, 42504 flow. Second operand 7 states and 2000 transitions. [2023-01-27 20:27:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1126 transitions, 45039 flow [2023-01-27 20:27:23,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1126 transitions, 44501 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-27 20:27:23,918 INFO L231 Difference]: Finished difference. Result has 501 places, 1078 transitions, 42418 flow [2023-01-27 20:27:23,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41920, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42418, PETRI_PLACES=501, PETRI_TRANSITIONS=1078} [2023-01-27 20:27:23,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 471 predicate places. [2023-01-27 20:27:23,919 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 1078 transitions, 42418 flow [2023-01-27 20:27:23,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:23,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:27:23,920 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:27:23,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2023-01-27 20:27:23,920 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:27:23,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:27:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash -338830146, now seen corresponding path program 51 times [2023-01-27 20:27:23,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:27:23,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095276988] [2023-01-27 20:27:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:27:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:27:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:27:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:27:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:27:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095276988] [2023-01-27 20:27:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095276988] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:27:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393130181] [2023-01-27 20:27:24,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:27:24,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:27:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:27:24,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:27:24,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:27:24,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:27:24,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:27:24,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 20:27:24,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:27:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:27:24,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:27:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:27:24,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393130181] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:27:24,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:27:24,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-27 20:27:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891191005] [2023-01-27 20:27:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:27:24,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:27:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:27:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:27:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:27:24,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-27 20:27:24,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1078 transitions, 42418 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:24,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:27:24,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-27 20:27:24,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:32,891 INFO L130 PetriNetUnfolder]: 9931/18075 cut-off events. [2023-01-27 20:27:32,892 INFO L131 PetriNetUnfolder]: For 847936/847936 co-relation queries the response was YES. [2023-01-27 20:27:33,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177726 conditions, 18075 events. 9931/18075 cut-off events. For 847936/847936 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 155167 event pairs, 4026 based on Foata normal form. 8/18083 useless extension candidates. Maximal degree in co-relation 177559. Up to 13788 conditions per place. [2023-01-27 20:27:33,302 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 851 selfloop transitions, 270 changer transitions 0/1121 dead transitions. [2023-01-27 20:27:33,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1121 transitions, 44945 flow [2023-01-27 20:27:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:27:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:27:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-27 20:27:33,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-27 20:27:33,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-27 20:27:33,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-27 20:27:33,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:33,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-27 20:27:33,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:33,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:33,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:33,308 INFO L175 Difference]: Start difference. First operand has 501 places, 1078 transitions, 42418 flow. Second operand 7 states and 1997 transitions. [2023-01-27 20:27:33,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1121 transitions, 44945 flow Received shutdown request... [2023-01-27 20:27:39,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:27:39,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 20:27:39,058 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 [2023-01-27 20:27:39,058 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:27:39,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:27:39,247 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-27 20:27:39,248 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:27:39,248 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:27:39,248 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:27:39,248 INFO L445 BasicCegarLoop]: Path program histogram: [51, 48, 9, 1] [2023-01-27 20:27:39,250 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:27:39,250 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:27:39,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:27:39 BasicIcfg [2023-01-27 20:27:39,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:27:39,252 INFO L158 Benchmark]: Toolchain (without parser) took 812028.84ms. Allocated memory was 358.6MB in the beginning and 11.9GB in the end (delta: 11.6GB). Free memory was 300.2MB in the beginning and 9.5GB in the end (delta: -9.2GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-01-27 20:27:39,252 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 308.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:27:39,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.22ms. Allocated memory is still 358.6MB. Free memory was 299.9MB in the beginning and 287.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:27:39,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.53ms. Allocated memory is still 358.6MB. Free memory was 287.0MB in the beginning and 284.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:27:39,253 INFO L158 Benchmark]: Boogie Preprocessor took 21.62ms. Allocated memory is still 358.6MB. Free memory was 284.0MB in the beginning and 281.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:27:39,253 INFO L158 Benchmark]: RCFGBuilder took 615.06ms. Allocated memory was 358.6MB in the beginning and 585.1MB in the end (delta: 226.5MB). Free memory was 281.9MB in the beginning and 535.0MB in the end (delta: -253.0MB). Peak memory consumption was 16.3MB. Max. memory is 16.0GB. [2023-01-27 20:27:39,253 INFO L158 Benchmark]: TraceAbstraction took 811137.78ms. Allocated memory was 585.1MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 534.2MB in the beginning and 9.5GB in the end (delta: -9.0GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-01-27 20:27:39,254 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 358.6MB. Free memory is still 308.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 218.22ms. Allocated memory is still 358.6MB. Free memory was 299.9MB in the beginning and 287.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.53ms. Allocated memory is still 358.6MB. Free memory was 287.0MB in the beginning and 284.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.62ms. Allocated memory is still 358.6MB. Free memory was 284.0MB in the beginning and 281.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 615.06ms. Allocated memory was 358.6MB in the beginning and 585.1MB in the end (delta: 226.5MB). Free memory was 281.9MB in the beginning and 535.0MB in the end (delta: -253.0MB). Peak memory consumption was 16.3MB. Max. memory is 16.0GB. * TraceAbstraction took 811137.78ms. Allocated memory was 585.1MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 534.2MB in the beginning and 9.5GB in the end (delta: -9.0GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 331 PlacesBefore, 30 PlacesAfterwards, 347 TransitionsBefore, 24 TransitionsAfterwards, 28350 CoEnabledTransitionPairs, 8 FixpointIterations, 124 TrivialSequentialCompositions, 178 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 73 ConcurrentYvCompositions, 22 ChoiceCompositions, 411 TotalNumberOfCompositions, 26332 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25648, independent: 25626, independent conditional: 0, independent unconditional: 25626, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17150, independent: 17137, independent conditional: 0, independent unconditional: 17137, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25648, independent: 8489, independent conditional: 0, independent unconditional: 8489, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 17150, unknown conditional: 0, unknown unconditional: 17150] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 509 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 811.0s, OverallIterations: 109, TraceHistogramMax: 3, PathProgramHistogramMax: 51, EmptinessCheckTime: 0.0s, AutomataDifference: 768.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6307 SdHoareTripleChecker+Valid, 15.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6307 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26120 IncrementalHoareTripleChecker+Invalid, 26294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 0 mSDtfsCounter, 26120 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1560 GetRequests, 701 SyntacticMatches, 1 SemanticMatches, 858 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42557occurred in iteration=104, InterpolantAutomatonStates: 768, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 2742 NumberOfCodeBlocks, 2741 NumberOfCodeBlocksAsserted, 123 NumberOfCheckSat, 2762 ConstructedInterpolants, 0 QuantifiedInterpolants, 18299 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1507 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 121 InterpolantComputations, 107 PerfectInterpolantSequences, 800/814 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