/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:41:46,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:41:47,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:41:47,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:41:47,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:41:47,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:41:47,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:41:47,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:41:47,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:41:47,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:41:47,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:41:47,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:41:47,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:41:47,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:41:47,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:41:47,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:41:47,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:41:47,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:41:47,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:41:47,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:41:47,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:41:47,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:41:47,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:41:47,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:41:47,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 18:41:47,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:41:47,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:41:47,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:41:47,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:41:47,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:41:47,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:41:47,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:41:47,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:41:47,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:41:47,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:41:47,142 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:41:47,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:41:47,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:41:47,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:41:47,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:41:47,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:41:47,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:41:47,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:41:47,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:41:47,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:41:47,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:41:47,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:41:47,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:41:47,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:41:47,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:41:47,443 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:41:47,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-12-05 18:41:48,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:41:48,859 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:41:48,860 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-12-05 18:41:48,892 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9984cb373/1dff672169a046859f92ffe8433b834b/FLAG96e1c5fb9 [2022-12-05 18:41:48,906 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9984cb373/1dff672169a046859f92ffe8433b834b [2022-12-05 18:41:48,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:41:48,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:41:48,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:41:48,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:41:48,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:41:48,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:41:48" (1/1) ... [2022-12-05 18:41:48,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f9d24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:48, skipping insertion in model container [2022-12-05 18:41:48,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:41:48" (1/1) ... [2022-12-05 18:41:48,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:41:48,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:41:49,080 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:41:49,608 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-12-05 18:41:49,618 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:41:49,695 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:41:49,710 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:41:49,755 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-12-05 18:41:49,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:41:49,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:41:49,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:41:49,868 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:41:49,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49 WrapperNode [2022-12-05 18:41:49,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:41:49,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:41:49,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:41:49,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:41:49,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,939 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-12-05 18:41:49,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:41:49,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:41:49,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:41:49,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:41:49,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:41:49,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:41:49,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:41:49,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:41:49,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (1/1) ... [2022-12-05 18:41:49,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:41:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:41:50,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 18:41:50,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-05 18:41:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:41:50,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:41:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-05 18:41:50,051 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-05 18:41:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:41:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:41:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:41:50,052 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:41:50,265 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:41:50,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:41:50,492 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:41:50,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:41:50,506 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:41:50,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:41:50 BoogieIcfgContainer [2022-12-05 18:41:50,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:41:50,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:41:50,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:41:50,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:41:50,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:41:48" (1/3) ... [2022-12-05 18:41:50,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7eebb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:41:50, skipping insertion in model container [2022-12-05 18:41:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:41:49" (2/3) ... [2022-12-05 18:41:50,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7eebb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:41:50, skipping insertion in model container [2022-12-05 18:41:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:41:50" (3/3) ... [2022-12-05 18:41:50,514 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-12-05 18:41:50,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:41:50,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-05 18:41:50,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:41:50,579 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 18:41:50,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 346 flow [2022-12-05 18:41:50,651 INFO L130 PetriNetUnfolder]: 10/203 cut-off events. [2022-12-05 18:41:50,652 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:41:50,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 10/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2022-12-05 18:41:50,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 165 transitions, 346 flow [2022-12-05 18:41:50,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 153 transitions, 318 flow [2022-12-05 18:41:50,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:41:50,672 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;@602c456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:41:50,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-05 18:41:50,678 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-12-05 18:41:50,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:41:50,678 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:50,679 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:50,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1991663780, now seen corresponding path program 1 times [2022-12-05 18:41:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153594583] [2022-12-05 18:41:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153594583] [2022-12-05 18:41:51,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153594583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:51,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:51,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:41:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220350608] [2022-12-05 18:41:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:51,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:41:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:41:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:41:51,291 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 165 [2022-12-05 18:41:51,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 153 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:51,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:51,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 165 [2022-12-05 18:41:51,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:51,738 INFO L130 PetriNetUnfolder]: 361/932 cut-off events. [2022-12-05 18:41:51,739 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-05 18:41:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 932 events. 361/932 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5010 event pairs, 216 based on Foata normal form. 20/900 useless extension candidates. Maximal degree in co-relation 1395. Up to 397 conditions per place. [2022-12-05 18:41:51,752 INFO L137 encePairwiseOnDemand]: 143/165 looper letters, 53 selfloop transitions, 17 changer transitions 1/149 dead transitions. [2022-12-05 18:41:51,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 452 flow [2022-12-05 18:41:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:41:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:41:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 868 transitions. [2022-12-05 18:41:51,772 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5845117845117845 [2022-12-05 18:41:51,774 INFO L175 Difference]: Start difference. First operand has 153 places, 153 transitions, 318 flow. Second operand 9 states and 868 transitions. [2022-12-05 18:41:51,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 452 flow [2022-12-05 18:41:51,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 18:41:51,785 INFO L231 Difference]: Finished difference. Result has 151 places, 142 transitions, 329 flow [2022-12-05 18:41:51,787 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2022-12-05 18:41:51,793 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, -2 predicate places. [2022-12-05 18:41:51,793 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 329 flow [2022-12-05 18:41:51,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:51,794 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:51,794 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:41:51,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 185727609, now seen corresponding path program 1 times [2022-12-05 18:41:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083352362] [2022-12-05 18:41:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:52,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:52,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083352362] [2022-12-05 18:41:52,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083352362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:52,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:52,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:41:52,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420252302] [2022-12-05 18:41:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:41:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:41:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:41:52,093 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 165 [2022-12-05 18:41:52,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:52,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:52,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 165 [2022-12-05 18:41:52,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:52,352 INFO L130 PetriNetUnfolder]: 361/892 cut-off events. [2022-12-05 18:41:52,352 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-05 18:41:52,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 892 events. 361/892 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4695 event pairs, 120 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 830. Up to 261 conditions per place. [2022-12-05 18:41:52,358 INFO L137 encePairwiseOnDemand]: 146/165 looper letters, 61 selfloop transitions, 18 changer transitions 1/157 dead transitions. [2022-12-05 18:41:52,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 521 flow [2022-12-05 18:41:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 18:41:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 18:41:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 961 transitions. [2022-12-05 18:41:52,361 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5824242424242424 [2022-12-05 18:41:52,361 INFO L175 Difference]: Start difference. First operand has 151 places, 142 transitions, 329 flow. Second operand 10 states and 961 transitions. [2022-12-05 18:41:52,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 521 flow [2022-12-05 18:41:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 157 transitions, 492 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:41:52,369 INFO L231 Difference]: Finished difference. Result has 152 places, 141 transitions, 340 flow [2022-12-05 18:41:52,369 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=340, PETRI_PLACES=152, PETRI_TRANSITIONS=141} [2022-12-05 18:41:52,369 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2022-12-05 18:41:52,370 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 141 transitions, 340 flow [2022-12-05 18:41:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:52,370 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:52,370 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:52,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:41:52,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 369167363, now seen corresponding path program 1 times [2022-12-05 18:41:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:52,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935316388] [2022-12-05 18:41:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:52,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:52,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935316388] [2022-12-05 18:41:52,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935316388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:52,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:52,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:41:52,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465501220] [2022-12-05 18:41:52,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:52,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:41:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:41:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:41:52,762 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2022-12-05 18:41:52,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 141 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:52,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:52,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2022-12-05 18:41:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:53,182 INFO L130 PetriNetUnfolder]: 832/1794 cut-off events. [2022-12-05 18:41:53,182 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-12-05 18:41:53,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3537 conditions, 1794 events. 832/1794 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10650 event pairs, 169 based on Foata normal form. 32/1793 useless extension candidates. Maximal degree in co-relation 912. Up to 499 conditions per place. [2022-12-05 18:41:53,192 INFO L137 encePairwiseOnDemand]: 144/165 looper letters, 100 selfloop transitions, 49 changer transitions 0/226 dead transitions. [2022-12-05 18:41:53,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 226 transitions, 824 flow [2022-12-05 18:41:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:41:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:41:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1267 transitions. [2022-12-05 18:41:53,195 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5906759906759906 [2022-12-05 18:41:53,196 INFO L175 Difference]: Start difference. First operand has 152 places, 141 transitions, 340 flow. Second operand 13 states and 1267 transitions. [2022-12-05 18:41:53,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 226 transitions, 824 flow [2022-12-05 18:41:53,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 226 transitions, 778 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 18:41:53,203 INFO L231 Difference]: Finished difference. Result has 164 places, 178 transitions, 610 flow [2022-12-05 18:41:53,204 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=610, PETRI_PLACES=164, PETRI_TRANSITIONS=178} [2022-12-05 18:41:53,205 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 11 predicate places. [2022-12-05 18:41:53,205 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 178 transitions, 610 flow [2022-12-05 18:41:53,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:53,205 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:53,205 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:53,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:41:53,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:53,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1486432752, now seen corresponding path program 1 times [2022-12-05 18:41:53,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:53,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701376359] [2022-12-05 18:41:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:53,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:53,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701376359] [2022-12-05 18:41:53,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701376359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:53,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:53,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:41:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323518587] [2022-12-05 18:41:53,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:41:53,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:41:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:41:53,568 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2022-12-05 18:41:53,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 178 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:53,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:53,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2022-12-05 18:41:53,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:54,395 INFO L130 PetriNetUnfolder]: 1084/2298 cut-off events. [2022-12-05 18:41:54,395 INFO L131 PetriNetUnfolder]: For 10649/10747 co-relation queries the response was YES. [2022-12-05 18:41:54,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 2298 events. 1084/2298 cut-off events. For 10649/10747 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14664 event pairs, 218 based on Foata normal form. 47/2312 useless extension candidates. Maximal degree in co-relation 7517. Up to 732 conditions per place. [2022-12-05 18:41:54,410 INFO L137 encePairwiseOnDemand]: 146/165 looper letters, 74 selfloop transitions, 48 changer transitions 68/267 dead transitions. [2022-12-05 18:41:54,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1694 flow [2022-12-05 18:41:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 18:41:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 18:41:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1076 transitions. [2022-12-05 18:41:54,413 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5928374655647383 [2022-12-05 18:41:54,413 INFO L175 Difference]: Start difference. First operand has 164 places, 178 transitions, 610 flow. Second operand 11 states and 1076 transitions. [2022-12-05 18:41:54,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1694 flow [2022-12-05 18:41:54,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 267 transitions, 1694 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:41:54,431 INFO L231 Difference]: Finished difference. Result has 182 places, 185 transitions, 925 flow [2022-12-05 18:41:54,432 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=925, PETRI_PLACES=182, PETRI_TRANSITIONS=185} [2022-12-05 18:41:54,433 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 29 predicate places. [2022-12-05 18:41:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 185 transitions, 925 flow [2022-12-05 18:41:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:54,433 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:54,434 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:41:54,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash -271433870, now seen corresponding path program 1 times [2022-12-05 18:41:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:54,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885742358] [2022-12-05 18:41:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:54,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:54,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885742358] [2022-12-05 18:41:54,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885742358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:54,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:54,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:41:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627509491] [2022-12-05 18:41:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:41:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:41:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:41:54,525 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 165 [2022-12-05 18:41:54,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 185 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:54,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:54,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 165 [2022-12-05 18:41:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:54,582 INFO L130 PetriNetUnfolder]: 47/270 cut-off events. [2022-12-05 18:41:54,583 INFO L131 PetriNetUnfolder]: For 956/1056 co-relation queries the response was YES. [2022-12-05 18:41:54,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 270 events. 47/270 cut-off events. For 956/1056 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 932 event pairs, 12 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 657. Up to 31 conditions per place. [2022-12-05 18:41:54,585 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-12-05 18:41:54,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 124 transitions, 426 flow [2022-12-05 18:41:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:41:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:41:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 840 transitions. [2022-12-05 18:41:54,587 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2022-12-05 18:41:54,587 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 925 flow. Second operand 6 states and 840 transitions. [2022-12-05 18:41:54,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 124 transitions, 426 flow [2022-12-05 18:41:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-12-05 18:41:54,589 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2022-12-05 18:41:54,590 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2022-12-05 18:41:54,590 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, -24 predicate places. [2022-12-05 18:41:54,590 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2022-12-05 18:41:54,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:54,591 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:54,591 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:41:54,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139686, now seen corresponding path program 1 times [2022-12-05 18:41:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:54,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301314025] [2022-12-05 18:41:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:56,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301314025] [2022-12-05 18:41:56,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301314025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:56,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:56,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:41:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057738492] [2022-12-05 18:41:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:56,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:41:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:41:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:41:56,190 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:41:56,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:56,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:56,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:41:56,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:57,702 INFO L130 PetriNetUnfolder]: 600/1416 cut-off events. [2022-12-05 18:41:57,702 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-12-05 18:41:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1416 events. 600/1416 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8073 event pairs, 97 based on Foata normal form. 0/1381 useless extension candidates. Maximal degree in co-relation 2861. Up to 269 conditions per place. [2022-12-05 18:41:57,709 INFO L137 encePairwiseOnDemand]: 138/165 looper letters, 142 selfloop transitions, 42 changer transitions 0/232 dead transitions. [2022-12-05 18:41:57,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 232 transitions, 897 flow [2022-12-05 18:41:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:41:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:41:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1902 transitions. [2022-12-05 18:41:57,727 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4433566433566434 [2022-12-05 18:41:57,728 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 26 states and 1902 transitions. [2022-12-05 18:41:57,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 232 transitions, 897 flow [2022-12-05 18:41:57,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 232 transitions, 890 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 18:41:57,732 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 484 flow [2022-12-05 18:41:57,733 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=484, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2022-12-05 18:41:57,735 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 6 predicate places. [2022-12-05 18:41:57,735 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 484 flow [2022-12-05 18:41:57,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:57,736 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:57,736 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:57,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:41:57,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash 634768800, now seen corresponding path program 2 times [2022-12-05 18:41:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:57,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747316362] [2022-12-05 18:41:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:41:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:41:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:41:58,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747316362] [2022-12-05 18:41:58,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747316362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:41:58,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:41:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:41:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923572349] [2022-12-05 18:41:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:41:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:41:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:41:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:41:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:41:58,850 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 165 [2022-12-05 18:41:58,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 484 flow. Second operand has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:58,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:41:58,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 165 [2022-12-05 18:41:58,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:41:59,560 INFO L130 PetriNetUnfolder]: 552/1481 cut-off events. [2022-12-05 18:41:59,560 INFO L131 PetriNetUnfolder]: For 1083/1086 co-relation queries the response was YES. [2022-12-05 18:41:59,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 1481 events. 552/1481 cut-off events. For 1083/1086 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9177 event pairs, 265 based on Foata normal form. 4/1440 useless extension candidates. Maximal degree in co-relation 3659. Up to 463 conditions per place. [2022-12-05 18:41:59,569 INFO L137 encePairwiseOnDemand]: 143/165 looper letters, 122 selfloop transitions, 36 changer transitions 0/210 dead transitions. [2022-12-05 18:41:59,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 210 transitions, 1076 flow [2022-12-05 18:41:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 18:41:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 18:41:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1350 transitions. [2022-12-05 18:41:59,572 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2022-12-05 18:41:59,573 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 484 flow. Second operand 18 states and 1350 transitions. [2022-12-05 18:41:59,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 210 transitions, 1076 flow [2022-12-05 18:41:59,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 210 transitions, 1056 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:41:59,581 INFO L231 Difference]: Finished difference. Result has 180 places, 161 transitions, 678 flow [2022-12-05 18:41:59,581 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=678, PETRI_PLACES=180, PETRI_TRANSITIONS=161} [2022-12-05 18:41:59,582 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 27 predicate places. [2022-12-05 18:41:59,582 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 161 transitions, 678 flow [2022-12-05 18:41:59,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:41:59,583 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:41:59,583 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:41:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:41:59,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:41:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:41:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 909176732, now seen corresponding path program 3 times [2022-12-05 18:41:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:41:59,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97753362] [2022-12-05 18:41:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:41:59,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:41:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:00,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:00,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97753362] [2022-12-05 18:42:00,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97753362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:00,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:00,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:42:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002861335] [2022-12-05 18:42:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:00,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:42:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:42:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:42:00,343 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 165 [2022-12-05 18:42:00,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 161 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:00,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:00,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 165 [2022-12-05 18:42:00,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:01,122 INFO L130 PetriNetUnfolder]: 639/1760 cut-off events. [2022-12-05 18:42:01,122 INFO L131 PetriNetUnfolder]: For 2087/2091 co-relation queries the response was YES. [2022-12-05 18:42:01,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 1760 events. 639/1760 cut-off events. For 2087/2091 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11935 event pairs, 132 based on Foata normal form. 2/1722 useless extension candidates. Maximal degree in co-relation 4710. Up to 384 conditions per place. [2022-12-05 18:42:01,131 INFO L137 encePairwiseOnDemand]: 140/165 looper letters, 142 selfloop transitions, 59 changer transitions 0/253 dead transitions. [2022-12-05 18:42:01,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 253 transitions, 1521 flow [2022-12-05 18:42:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:42:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:42:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1448 transitions. [2022-12-05 18:42:01,135 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46188197767145134 [2022-12-05 18:42:01,136 INFO L175 Difference]: Start difference. First operand has 180 places, 161 transitions, 678 flow. Second operand 19 states and 1448 transitions. [2022-12-05 18:42:01,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 253 transitions, 1521 flow [2022-12-05 18:42:01,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 253 transitions, 1498 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-05 18:42:01,146 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 1053 flow [2022-12-05 18:42:01,146 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1053, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2022-12-05 18:42:01,147 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 48 predicate places. [2022-12-05 18:42:01,147 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 1053 flow [2022-12-05 18:42:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:01,148 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:01,148 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:42:01,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1984343356, now seen corresponding path program 4 times [2022-12-05 18:42:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:01,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794553788] [2022-12-05 18:42:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794553788] [2022-12-05 18:42:01,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794553788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:01,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:42:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063900535] [2022-12-05 18:42:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:01,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:42:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:42:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:42:01,905 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 165 [2022-12-05 18:42:01,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 1053 flow. Second operand has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:01,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:01,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 165 [2022-12-05 18:42:01,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:02,712 INFO L130 PetriNetUnfolder]: 639/1804 cut-off events. [2022-12-05 18:42:02,712 INFO L131 PetriNetUnfolder]: For 3731/3744 co-relation queries the response was YES. [2022-12-05 18:42:02,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5424 conditions, 1804 events. 639/1804 cut-off events. For 3731/3744 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12194 event pairs, 206 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 5389. Up to 541 conditions per place. [2022-12-05 18:42:02,727 INFO L137 encePairwiseOnDemand]: 142/165 looper letters, 158 selfloop transitions, 54 changer transitions 0/264 dead transitions. [2022-12-05 18:42:02,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 264 transitions, 1945 flow [2022-12-05 18:42:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:42:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:42:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1438 transitions. [2022-12-05 18:42:02,730 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4586921850079745 [2022-12-05 18:42:02,730 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 1053 flow. Second operand 19 states and 1438 transitions. [2022-12-05 18:42:02,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 264 transitions, 1945 flow [2022-12-05 18:42:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 264 transitions, 1897 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-12-05 18:42:02,746 INFO L231 Difference]: Finished difference. Result has 221 places, 202 transitions, 1385 flow [2022-12-05 18:42:02,746 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1385, PETRI_PLACES=221, PETRI_TRANSITIONS=202} [2022-12-05 18:42:02,747 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 68 predicate places. [2022-12-05 18:42:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 202 transitions, 1385 flow [2022-12-05 18:42:02,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:02,748 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:02,748 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 18:42:02,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 48156188, now seen corresponding path program 5 times [2022-12-05 18:42:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300312583] [2022-12-05 18:42:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:03,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300312583] [2022-12-05 18:42:03,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300312583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:03,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:03,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106743950] [2022-12-05 18:42:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:03,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:03,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:03,815 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:03,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 202 transitions, 1385 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:03,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:03,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:03,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:05,585 INFO L130 PetriNetUnfolder]: 1553/4179 cut-off events. [2022-12-05 18:42:05,585 INFO L131 PetriNetUnfolder]: For 13009/13029 co-relation queries the response was YES. [2022-12-05 18:42:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13474 conditions, 4179 events. 1553/4179 cut-off events. For 13009/13029 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 34930 event pairs, 347 based on Foata normal form. 16/4111 useless extension candidates. Maximal degree in co-relation 13430. Up to 1076 conditions per place. [2022-12-05 18:42:05,610 INFO L137 encePairwiseOnDemand]: 138/165 looper letters, 264 selfloop transitions, 130 changer transitions 0/442 dead transitions. [2022-12-05 18:42:05,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 442 transitions, 4408 flow [2022-12-05 18:42:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:42:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:42:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1904 transitions. [2022-12-05 18:42:05,613 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4438228438228438 [2022-12-05 18:42:05,613 INFO L175 Difference]: Start difference. First operand has 221 places, 202 transitions, 1385 flow. Second operand 26 states and 1904 transitions. [2022-12-05 18:42:05,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 442 transitions, 4408 flow [2022-12-05 18:42:05,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 442 transitions, 4294 flow, removed 46 selfloop flow, removed 5 redundant places. [2022-12-05 18:42:05,683 INFO L231 Difference]: Finished difference. Result has 257 places, 302 transitions, 2995 flow [2022-12-05 18:42:05,684 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2995, PETRI_PLACES=257, PETRI_TRANSITIONS=302} [2022-12-05 18:42:05,684 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 104 predicate places. [2022-12-05 18:42:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 302 transitions, 2995 flow [2022-12-05 18:42:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:05,686 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:05,686 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:05,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 18:42:05,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:05,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1784097006, now seen corresponding path program 6 times [2022-12-05 18:42:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:05,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606872331] [2022-12-05 18:42:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:06,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606872331] [2022-12-05 18:42:06,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606872331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:06,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:06,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:42:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233971093] [2022-12-05 18:42:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:42:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:42:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:42:06,344 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 165 [2022-12-05 18:42:06,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 302 transitions, 2995 flow. Second operand has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:06,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:06,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 165 [2022-12-05 18:42:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:07,784 INFO L130 PetriNetUnfolder]: 1842/5834 cut-off events. [2022-12-05 18:42:07,784 INFO L131 PetriNetUnfolder]: For 25166/25339 co-relation queries the response was YES. [2022-12-05 18:42:07,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20480 conditions, 5834 events. 1842/5834 cut-off events. For 25166/25339 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 56205 event pairs, 830 based on Foata normal form. 104/5822 useless extension candidates. Maximal degree in co-relation 20420. Up to 1635 conditions per place. [2022-12-05 18:42:07,824 INFO L137 encePairwiseOnDemand]: 142/165 looper letters, 300 selfloop transitions, 152 changer transitions 0/508 dead transitions. [2022-12-05 18:42:07,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 508 transitions, 6163 flow [2022-12-05 18:42:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:42:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:42:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1437 transitions. [2022-12-05 18:42:07,826 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4583732057416268 [2022-12-05 18:42:07,826 INFO L175 Difference]: Start difference. First operand has 257 places, 302 transitions, 2995 flow. Second operand 19 states and 1437 transitions. [2022-12-05 18:42:07,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 508 transitions, 6163 flow [2022-12-05 18:42:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 508 transitions, 6079 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-12-05 18:42:07,902 INFO L231 Difference]: Finished difference. Result has 278 places, 376 transitions, 4542 flow [2022-12-05 18:42:07,902 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4542, PETRI_PLACES=278, PETRI_TRANSITIONS=376} [2022-12-05 18:42:07,903 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 125 predicate places. [2022-12-05 18:42:07,903 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 376 transitions, 4542 flow [2022-12-05 18:42:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:07,903 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:07,903 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:07,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 18:42:07,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:07,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1332193258, now seen corresponding path program 7 times [2022-12-05 18:42:07,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:07,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471805829] [2022-12-05 18:42:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:07,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:09,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471805829] [2022-12-05 18:42:09,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471805829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:09,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:09,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592352678] [2022-12-05 18:42:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:09,061 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:09,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 376 transitions, 4542 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:09,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:09,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:09,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:12,081 INFO L130 PetriNetUnfolder]: 2699/7960 cut-off events. [2022-12-05 18:42:12,081 INFO L131 PetriNetUnfolder]: For 37636/37706 co-relation queries the response was YES. [2022-12-05 18:42:12,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30242 conditions, 7960 events. 2699/7960 cut-off events. For 37636/37706 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 80250 event pairs, 457 based on Foata normal form. 32/7868 useless extension candidates. Maximal degree in co-relation 30172. Up to 1684 conditions per place. [2022-12-05 18:42:12,166 INFO L137 encePairwiseOnDemand]: 136/165 looper letters, 337 selfloop transitions, 249 changer transitions 0/634 dead transitions. [2022-12-05 18:42:12,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 634 transitions, 8451 flow [2022-12-05 18:42:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-05 18:42:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-05 18:42:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2067 transitions. [2022-12-05 18:42:12,174 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4474025974025974 [2022-12-05 18:42:12,174 INFO L175 Difference]: Start difference. First operand has 278 places, 376 transitions, 4542 flow. Second operand 28 states and 2067 transitions. [2022-12-05 18:42:12,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 634 transitions, 8451 flow [2022-12-05 18:42:12,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 634 transitions, 8359 flow, removed 38 selfloop flow, removed 5 redundant places. [2022-12-05 18:42:12,385 INFO L231 Difference]: Finished difference. Result has 314 places, 469 transitions, 6760 flow [2022-12-05 18:42:12,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=4450, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6760, PETRI_PLACES=314, PETRI_TRANSITIONS=469} [2022-12-05 18:42:12,388 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 161 predicate places. [2022-12-05 18:42:12,388 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 469 transitions, 6760 flow [2022-12-05 18:42:12,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:12,389 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:12,389 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:12,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 18:42:12,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2042507068, now seen corresponding path program 8 times [2022-12-05 18:42:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:12,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389437173] [2022-12-05 18:42:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389437173] [2022-12-05 18:42:13,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389437173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:13,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:42:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520395016] [2022-12-05 18:42:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:13,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:42:13,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:42:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:42:13,139 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 165 [2022-12-05 18:42:13,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 469 transitions, 6760 flow. Second operand has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:13,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:13,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 165 [2022-12-05 18:42:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:15,225 INFO L130 PetriNetUnfolder]: 2313/7610 cut-off events. [2022-12-05 18:42:15,226 INFO L131 PetriNetUnfolder]: For 52468/52680 co-relation queries the response was YES. [2022-12-05 18:42:15,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31623 conditions, 7610 events. 2313/7610 cut-off events. For 52468/52680 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 79392 event pairs, 551 based on Foata normal form. 142/7604 useless extension candidates. Maximal degree in co-relation 31539. Up to 1628 conditions per place. [2022-12-05 18:42:15,296 INFO L137 encePairwiseOnDemand]: 140/165 looper letters, 361 selfloop transitions, 270 changer transitions 0/694 dead transitions. [2022-12-05 18:42:15,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 694 transitions, 11124 flow [2022-12-05 18:42:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:42:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:42:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1445 transitions. [2022-12-05 18:42:15,299 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4609250398724083 [2022-12-05 18:42:15,299 INFO L175 Difference]: Start difference. First operand has 314 places, 469 transitions, 6760 flow. Second operand 19 states and 1445 transitions. [2022-12-05 18:42:15,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 694 transitions, 11124 flow [2022-12-05 18:42:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 694 transitions, 11038 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-12-05 18:42:15,523 INFO L231 Difference]: Finished difference. Result has 334 places, 554 transitions, 9269 flow [2022-12-05 18:42:15,523 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=6692, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9269, PETRI_PLACES=334, PETRI_TRANSITIONS=554} [2022-12-05 18:42:15,524 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 181 predicate places. [2022-12-05 18:42:15,525 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 554 transitions, 9269 flow [2022-12-05 18:42:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.93333333333334) internal successors, (1079), 15 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:15,525 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:15,525 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:15,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 18:42:15,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash -522274492, now seen corresponding path program 9 times [2022-12-05 18:42:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099770734] [2022-12-05 18:42:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:16,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:16,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099770734] [2022-12-05 18:42:16,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099770734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:16,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:16,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316869384] [2022-12-05 18:42:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:16,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:16,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:16,946 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:16,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 554 transitions, 9269 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:16,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:16,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:20,735 INFO L130 PetriNetUnfolder]: 3584/10969 cut-off events. [2022-12-05 18:42:20,735 INFO L131 PetriNetUnfolder]: For 93157/93281 co-relation queries the response was YES. [2022-12-05 18:42:20,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49425 conditions, 10969 events. 3584/10969 cut-off events. For 93157/93281 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 118979 event pairs, 892 based on Foata normal form. 70/10919 useless extension candidates. Maximal degree in co-relation 49332. Up to 2710 conditions per place. [2022-12-05 18:42:20,841 INFO L137 encePairwiseOnDemand]: 138/165 looper letters, 445 selfloop transitions, 295 changer transitions 0/788 dead transitions. [2022-12-05 18:42:20,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 788 transitions, 14115 flow [2022-12-05 18:42:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-05 18:42:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-05 18:42:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1835 transitions. [2022-12-05 18:42:20,846 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4448484848484848 [2022-12-05 18:42:20,846 INFO L175 Difference]: Start difference. First operand has 334 places, 554 transitions, 9269 flow. Second operand 25 states and 1835 transitions. [2022-12-05 18:42:20,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 788 transitions, 14115 flow [2022-12-05 18:42:21,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 788 transitions, 13896 flow, removed 94 selfloop flow, removed 6 redundant places. [2022-12-05 18:42:21,306 INFO L231 Difference]: Finished difference. Result has 368 places, 648 transitions, 12043 flow [2022-12-05 18:42:21,307 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=9135, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=12043, PETRI_PLACES=368, PETRI_TRANSITIONS=648} [2022-12-05 18:42:21,308 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 215 predicate places. [2022-12-05 18:42:21,308 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 648 transitions, 12043 flow [2022-12-05 18:42:21,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:21,309 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:21,309 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 18:42:21,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2143369690, now seen corresponding path program 10 times [2022-12-05 18:42:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953237800] [2022-12-05 18:42:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:22,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953237800] [2022-12-05 18:42:22,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953237800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:22,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:22,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:22,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850232516] [2022-12-05 18:42:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:22,440 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:22,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 648 transitions, 12043 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:22,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:22,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:22,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:26,118 INFO L130 PetriNetUnfolder]: 3590/11071 cut-off events. [2022-12-05 18:42:26,118 INFO L131 PetriNetUnfolder]: For 112717/112804 co-relation queries the response was YES. [2022-12-05 18:42:26,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52711 conditions, 11071 events. 3590/11071 cut-off events. For 112717/112804 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 121046 event pairs, 733 based on Foata normal form. 55/10912 useless extension candidates. Maximal degree in co-relation 52602. Up to 2334 conditions per place. [2022-12-05 18:42:26,243 INFO L137 encePairwiseOnDemand]: 138/165 looper letters, 500 selfloop transitions, 346 changer transitions 0/894 dead transitions. [2022-12-05 18:42:26,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 894 transitions, 17218 flow [2022-12-05 18:42:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:42:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:42:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1571 transitions. [2022-12-05 18:42:26,248 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4533910533910534 [2022-12-05 18:42:26,248 INFO L175 Difference]: Start difference. First operand has 368 places, 648 transitions, 12043 flow. Second operand 21 states and 1571 transitions. [2022-12-05 18:42:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 894 transitions, 17218 flow [2022-12-05 18:42:26,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 894 transitions, 16910 flow, removed 146 selfloop flow, removed 5 redundant places. [2022-12-05 18:42:26,866 INFO L231 Difference]: Finished difference. Result has 391 places, 676 transitions, 13472 flow [2022-12-05 18:42:26,867 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=11885, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13472, PETRI_PLACES=391, PETRI_TRANSITIONS=676} [2022-12-05 18:42:26,868 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 238 predicate places. [2022-12-05 18:42:26,868 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 676 transitions, 13472 flow [2022-12-05 18:42:26,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:26,868 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:26,868 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 18:42:26,869 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2099928602, now seen corresponding path program 11 times [2022-12-05 18:42:26,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:26,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115563690] [2022-12-05 18:42:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:26,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:27,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:27,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115563690] [2022-12-05 18:42:27,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115563690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:27,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:27,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 18:42:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655257357] [2022-12-05 18:42:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 18:42:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 18:42:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-05 18:42:27,960 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:27,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 676 transitions, 13472 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:27,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:27,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:32,499 INFO L130 PetriNetUnfolder]: 3980/12428 cut-off events. [2022-12-05 18:42:32,500 INFO L131 PetriNetUnfolder]: For 141985/142101 co-relation queries the response was YES. [2022-12-05 18:42:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61663 conditions, 12428 events. 3980/12428 cut-off events. For 141985/142101 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 139404 event pairs, 1006 based on Foata normal form. 69/12359 useless extension candidates. Maximal degree in co-relation 61545. Up to 2710 conditions per place. [2022-12-05 18:42:32,723 INFO L137 encePairwiseOnDemand]: 137/165 looper letters, 502 selfloop transitions, 371 changer transitions 0/921 dead transitions. [2022-12-05 18:42:32,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 921 transitions, 19064 flow [2022-12-05 18:42:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:42:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:42:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1918 transitions. [2022-12-05 18:42:32,742 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4470862470862471 [2022-12-05 18:42:32,742 INFO L175 Difference]: Start difference. First operand has 391 places, 676 transitions, 13472 flow. Second operand 26 states and 1918 transitions. [2022-12-05 18:42:32,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 921 transitions, 19064 flow [2022-12-05 18:42:33,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 921 transitions, 18849 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-12-05 18:42:33,631 INFO L231 Difference]: Finished difference. Result has 419 places, 759 transitions, 16476 flow [2022-12-05 18:42:33,632 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=13264, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=16476, PETRI_PLACES=419, PETRI_TRANSITIONS=759} [2022-12-05 18:42:33,633 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 266 predicate places. [2022-12-05 18:42:33,633 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 759 transitions, 16476 flow [2022-12-05 18:42:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:33,635 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:33,635 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 18:42:33,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1440967224, now seen corresponding path program 12 times [2022-12-05 18:42:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:33,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345992155] [2022-12-05 18:42:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:34,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345992155] [2022-12-05 18:42:34,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345992155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:34,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:34,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:34,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13213951] [2022-12-05 18:42:34,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:34,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:34,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:34,823 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:34,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 759 transitions, 16476 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:34,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:34,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:34,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:40,015 INFO L130 PetriNetUnfolder]: 3977/12380 cut-off events. [2022-12-05 18:42:40,036 INFO L131 PetriNetUnfolder]: For 172237/172389 co-relation queries the response was YES. [2022-12-05 18:42:40,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65146 conditions, 12380 events. 3977/12380 cut-off events. For 172237/172389 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 138547 event pairs, 700 based on Foata normal form. 97/12264 useless extension candidates. Maximal degree in co-relation 65018. Up to 2649 conditions per place. [2022-12-05 18:42:40,189 INFO L137 encePairwiseOnDemand]: 136/165 looper letters, 523 selfloop transitions, 423 changer transitions 0/994 dead transitions. [2022-12-05 18:42:40,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 994 transitions, 21649 flow [2022-12-05 18:42:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-05 18:42:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-05 18:42:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2141 transitions. [2022-12-05 18:42:40,192 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4474399164054336 [2022-12-05 18:42:40,192 INFO L175 Difference]: Start difference. First operand has 419 places, 759 transitions, 16476 flow. Second operand 29 states and 2141 transitions. [2022-12-05 18:42:40,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 994 transitions, 21649 flow [2022-12-05 18:42:41,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 994 transitions, 21433 flow, removed 72 selfloop flow, removed 7 redundant places. [2022-12-05 18:42:41,148 INFO L231 Difference]: Finished difference. Result has 449 places, 791 transitions, 18410 flow [2022-12-05 18:42:41,149 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=16267, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18410, PETRI_PLACES=449, PETRI_TRANSITIONS=791} [2022-12-05 18:42:41,150 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 296 predicate places. [2022-12-05 18:42:41,150 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 791 transitions, 18410 flow [2022-12-05 18:42:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:41,150 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:41,150 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:41,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 18:42:41,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1662473974, now seen corresponding path program 13 times [2022-12-05 18:42:41,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:41,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894890367] [2022-12-05 18:42:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:42,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894890367] [2022-12-05 18:42:42,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894890367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:42,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:42,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:42:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6000940] [2022-12-05 18:42:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:42:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:42:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:42:42,229 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:42,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 791 transitions, 18410 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:42,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:42,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:42,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:47,268 INFO L130 PetriNetUnfolder]: 3983/12736 cut-off events. [2022-12-05 18:42:47,268 INFO L131 PetriNetUnfolder]: For 190027/190088 co-relation queries the response was YES. [2022-12-05 18:42:47,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68794 conditions, 12736 events. 3983/12736 cut-off events. For 190027/190088 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 144877 event pairs, 1431 based on Foata normal form. 40/12565 useless extension candidates. Maximal degree in co-relation 68657. Up to 2710 conditions per place. [2022-12-05 18:42:47,449 INFO L137 encePairwiseOnDemand]: 137/165 looper letters, 624 selfloop transitions, 358 changer transitions 0/1030 dead transitions. [2022-12-05 18:42:47,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1030 transitions, 24477 flow [2022-12-05 18:42:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:42:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:42:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1921 transitions. [2022-12-05 18:42:47,452 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4477855477855478 [2022-12-05 18:42:47,452 INFO L175 Difference]: Start difference. First operand has 449 places, 791 transitions, 18410 flow. Second operand 26 states and 1921 transitions. [2022-12-05 18:42:47,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1030 transitions, 24477 flow [2022-12-05 18:42:48,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1030 transitions, 24276 flow, removed 35 selfloop flow, removed 13 redundant places. [2022-12-05 18:42:48,615 INFO L231 Difference]: Finished difference. Result has 473 places, 880 transitions, 21854 flow [2022-12-05 18:42:48,616 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=18224, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=21854, PETRI_PLACES=473, PETRI_TRANSITIONS=880} [2022-12-05 18:42:48,616 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 320 predicate places. [2022-12-05 18:42:48,616 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 880 transitions, 21854 flow [2022-12-05 18:42:48,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:48,617 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:48,617 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 18:42:48,617 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -347689832, now seen corresponding path program 14 times [2022-12-05 18:42:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:48,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953766259] [2022-12-05 18:42:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953766259] [2022-12-05 18:42:49,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953766259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:49,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:49,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 18:42:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193642532] [2022-12-05 18:42:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 18:42:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 18:42:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-12-05 18:42:49,515 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:49,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 880 transitions, 21854 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:49,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:49,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:49,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:55,474 INFO L130 PetriNetUnfolder]: 4467/14185 cut-off events. [2022-12-05 18:42:55,474 INFO L131 PetriNetUnfolder]: For 252504/252664 co-relation queries the response was YES. [2022-12-05 18:42:55,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79968 conditions, 14185 events. 4467/14185 cut-off events. For 252504/252664 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 163628 event pairs, 580 based on Foata normal form. 127/14196 useless extension candidates. Maximal degree in co-relation 79819. Up to 3137 conditions per place. [2022-12-05 18:42:55,641 INFO L137 encePairwiseOnDemand]: 138/165 looper letters, 588 selfloop transitions, 508 changer transitions 0/1144 dead transitions. [2022-12-05 18:42:55,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1144 transitions, 28918 flow [2022-12-05 18:42:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-05 18:42:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-05 18:42:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2058 transitions. [2022-12-05 18:42:55,644 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2022-12-05 18:42:55,644 INFO L175 Difference]: Start difference. First operand has 473 places, 880 transitions, 21854 flow. Second operand 28 states and 2058 transitions. [2022-12-05 18:42:55,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1144 transitions, 28918 flow [2022-12-05 18:42:57,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1144 transitions, 28518 flow, removed 191 selfloop flow, removed 5 redundant places. [2022-12-05 18:42:57,351 INFO L231 Difference]: Finished difference. Result has 508 places, 969 transitions, 25532 flow [2022-12-05 18:42:57,352 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=21460, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=25532, PETRI_PLACES=508, PETRI_TRANSITIONS=969} [2022-12-05 18:42:57,352 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 355 predicate places. [2022-12-05 18:42:57,352 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 969 transitions, 25532 flow [2022-12-05 18:42:57,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:57,353 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:57,353 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 18:42:57,353 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:42:57,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1084373434, now seen corresponding path program 15 times [2022-12-05 18:42:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:57,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118683815] [2022-12-05 18:42:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:42:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:58,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118683815] [2022-12-05 18:42:58,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118683815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:58,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:58,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-05 18:42:58,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438498451] [2022-12-05 18:42:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-05 18:42:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-05 18:42:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-12-05 18:42:58,576 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:42:58,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 969 transitions, 25532 flow. Second operand has 20 states, 20 states have (on average 69.05) internal successors, (1381), 20 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:58,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:58,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:42:58,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:05,075 INFO L130 PetriNetUnfolder]: 4470/14712 cut-off events. [2022-12-05 18:43:05,075 INFO L131 PetriNetUnfolder]: For 296890/296890 co-relation queries the response was YES. [2022-12-05 18:43:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85439 conditions, 14712 events. 4470/14712 cut-off events. For 296890/296890 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 171681 event pairs, 2439 based on Foata normal form. 3/14431 useless extension candidates. Maximal degree in co-relation 85277. Up to 6376 conditions per place. [2022-12-05 18:43:05,259 INFO L137 encePairwiseOnDemand]: 139/165 looper letters, 655 selfloop transitions, 472 changer transitions 0/1175 dead transitions. [2022-12-05 18:43:05,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1175 transitions, 32023 flow [2022-12-05 18:43:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:43:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:43:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1869 transitions. [2022-12-05 18:43:05,261 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43566433566433566 [2022-12-05 18:43:05,262 INFO L175 Difference]: Start difference. First operand has 508 places, 969 transitions, 25532 flow. Second operand 26 states and 1869 transitions. [2022-12-05 18:43:05,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 1175 transitions, 32023 flow [2022-12-05 18:43:07,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1175 transitions, 31505 flow, removed 200 selfloop flow, removed 8 redundant places. [2022-12-05 18:43:07,275 INFO L231 Difference]: Finished difference. Result has 536 places, 1040 transitions, 28390 flow [2022-12-05 18:43:07,276 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=25089, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=28390, PETRI_PLACES=536, PETRI_TRANSITIONS=1040} [2022-12-05 18:43:07,276 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 383 predicate places. [2022-12-05 18:43:07,276 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1040 transitions, 28390 flow [2022-12-05 18:43:07,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.05) internal successors, (1381), 20 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:07,277 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:07,277 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:07,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 18:43:07,277 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:43:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash 605150192, now seen corresponding path program 16 times [2022-12-05 18:43:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:07,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701480823] [2022-12-05 18:43:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:08,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:08,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701480823] [2022-12-05 18:43:08,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701480823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:08,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:08,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 18:43:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12753249] [2022-12-05 18:43:08,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:08,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 18:43:08,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:08,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 18:43:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-05 18:43:08,325 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:43:08,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1040 transitions, 28390 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:08,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:08,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:43:08,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:15,272 INFO L130 PetriNetUnfolder]: 4867/15882 cut-off events. [2022-12-05 18:43:15,272 INFO L131 PetriNetUnfolder]: For 340980/341028 co-relation queries the response was YES. [2022-12-05 18:43:15,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94546 conditions, 15882 events. 4867/15882 cut-off events. For 340980/341028 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 188649 event pairs, 2216 based on Foata normal form. 35/15670 useless extension candidates. Maximal degree in co-relation 94373. Up to 5880 conditions per place. [2022-12-05 18:43:15,545 INFO L137 encePairwiseOnDemand]: 139/165 looper letters, 797 selfloop transitions, 396 changer transitions 0/1241 dead transitions. [2022-12-05 18:43:15,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1241 transitions, 35034 flow [2022-12-05 18:43:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:43:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:43:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1416 transitions. [2022-12-05 18:43:15,547 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45167464114832534 [2022-12-05 18:43:15,547 INFO L175 Difference]: Start difference. First operand has 536 places, 1040 transitions, 28390 flow. Second operand 19 states and 1416 transitions. [2022-12-05 18:43:15,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1241 transitions, 35034 flow [2022-12-05 18:43:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 1241 transitions, 34469 flow, removed 167 selfloop flow, removed 8 redundant places. [2022-12-05 18:43:18,028 INFO L231 Difference]: Finished difference. Result has 557 places, 1110 transitions, 31396 flow [2022-12-05 18:43:18,029 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=27888, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31396, PETRI_PLACES=557, PETRI_TRANSITIONS=1110} [2022-12-05 18:43:18,030 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 404 predicate places. [2022-12-05 18:43:18,030 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 1110 transitions, 31396 flow [2022-12-05 18:43:18,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:18,031 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:18,031 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:18,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 18:43:18,031 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:43:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1185456830, now seen corresponding path program 17 times [2022-12-05 18:43:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:18,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732300372] [2022-12-05 18:43:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:19,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732300372] [2022-12-05 18:43:19,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732300372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:19,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:19,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-05 18:43:19,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281250094] [2022-12-05 18:43:19,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:19,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 18:43:19,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 18:43:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-12-05 18:43:19,148 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 165 [2022-12-05 18:43:19,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 1110 transitions, 31396 flow. Second operand has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:19,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:19,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 165 [2022-12-05 18:43:19,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:27,500 INFO L130 PetriNetUnfolder]: 4864/15905 cut-off events. [2022-12-05 18:43:27,500 INFO L131 PetriNetUnfolder]: For 347484/347604 co-relation queries the response was YES. [2022-12-05 18:43:27,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96110 conditions, 15905 events. 4864/15905 cut-off events. For 347484/347604 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 190019 event pairs, 1823 based on Foata normal form. 67/15700 useless extension candidates. Maximal degree in co-relation 95927. Up to 7369 conditions per place. [2022-12-05 18:43:27,758 INFO L137 encePairwiseOnDemand]: 135/165 looper letters, 769 selfloop transitions, 441 changer transitions 0/1257 dead transitions. [2022-12-05 18:43:27,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1257 transitions, 36480 flow [2022-12-05 18:43:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:43:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:43:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2119 transitions. [2022-12-05 18:43:27,780 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42808080808080806 [2022-12-05 18:43:27,780 INFO L175 Difference]: Start difference. First operand has 557 places, 1110 transitions, 31396 flow. Second operand 30 states and 2119 transitions. [2022-12-05 18:43:27,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1257 transitions, 36480 flow [2022-12-05 18:43:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 1257 transitions, 36068 flow, removed 193 selfloop flow, removed 5 redundant places. [2022-12-05 18:43:30,615 INFO L231 Difference]: Finished difference. Result has 590 places, 1150 transitions, 33533 flow [2022-12-05 18:43:30,616 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=30984, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=33533, PETRI_PLACES=590, PETRI_TRANSITIONS=1150} [2022-12-05 18:43:30,616 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 437 predicate places. [2022-12-05 18:43:30,616 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 1150 transitions, 33533 flow [2022-12-05 18:43:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:30,617 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:30,617 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-05 18:43:30,617 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:43:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1189786166, now seen corresponding path program 18 times [2022-12-05 18:43:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:30,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747567107] [2022-12-05 18:43:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747567107] [2022-12-05 18:43:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747567107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 18:43:31,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007068139] [2022-12-05 18:43:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 18:43:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 18:43:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-12-05 18:43:31,564 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:43:31,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 1150 transitions, 33533 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:31,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:31,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:43:31,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:39,051 INFO L130 PetriNetUnfolder]: 4864/15980 cut-off events. [2022-12-05 18:43:39,052 INFO L131 PetriNetUnfolder]: For 368921/368969 co-relation queries the response was YES. [2022-12-05 18:43:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96809 conditions, 15980 events. 4864/15980 cut-off events. For 368921/368969 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 190338 event pairs, 2017 based on Foata normal form. 35/15716 useless extension candidates. Maximal degree in co-relation 96617. Up to 5860 conditions per place. [2022-12-05 18:43:39,391 INFO L137 encePairwiseOnDemand]: 141/165 looper letters, 796 selfloop transitions, 479 changer transitions 0/1323 dead transitions. [2022-12-05 18:43:39,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 1323 transitions, 39035 flow [2022-12-05 18:43:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:43:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:43:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1548 transitions. [2022-12-05 18:43:39,393 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44675324675324674 [2022-12-05 18:43:39,393 INFO L175 Difference]: Start difference. First operand has 590 places, 1150 transitions, 33533 flow. Second operand 21 states and 1548 transitions. [2022-12-05 18:43:39,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 1323 transitions, 39035 flow [2022-12-05 18:43:42,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1323 transitions, 38541 flow, removed 119 selfloop flow, removed 14 redundant places. [2022-12-05 18:43:42,195 INFO L231 Difference]: Finished difference. Result has 604 places, 1170 transitions, 34805 flow [2022-12-05 18:43:42,196 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=33039, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=34805, PETRI_PLACES=604, PETRI_TRANSITIONS=1170} [2022-12-05 18:43:42,196 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 451 predicate places. [2022-12-05 18:43:42,196 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1170 transitions, 34805 flow [2022-12-05 18:43:42,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:42,197 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:42,197 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-05 18:43:42,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:43:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash -510348724, now seen corresponding path program 19 times [2022-12-05 18:43:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:42,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489529041] [2022-12-05 18:43:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489529041] [2022-12-05 18:43:43,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489529041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:43,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-05 18:43:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707612390] [2022-12-05 18:43:43,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 18:43:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 18:43:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-12-05 18:43:43,393 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 165 [2022-12-05 18:43:43,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1170 transitions, 34805 flow. Second operand has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:43,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:43,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 165 [2022-12-05 18:43:43,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:51,959 INFO L130 PetriNetUnfolder]: 4861/16072 cut-off events. [2022-12-05 18:43:51,959 INFO L131 PetriNetUnfolder]: For 393454/393502 co-relation queries the response was YES. [2022-12-05 18:43:52,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98418 conditions, 16072 events. 4861/16072 cut-off events. For 393454/393502 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 191293 event pairs, 2271 based on Foata normal form. 35/15805 useless extension candidates. Maximal degree in co-relation 98217. Up to 4723 conditions per place. [2022-12-05 18:43:52,658 INFO L137 encePairwiseOnDemand]: 135/165 looper letters, 875 selfloop transitions, 469 changer transitions 0/1391 dead transitions. [2022-12-05 18:43:52,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1391 transitions, 41750 flow [2022-12-05 18:43:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:43:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:43:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2119 transitions. [2022-12-05 18:43:52,666 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42808080808080806 [2022-12-05 18:43:52,666 INFO L175 Difference]: Start difference. First operand has 604 places, 1170 transitions, 34805 flow. Second operand 30 states and 2119 transitions. [2022-12-05 18:43:52,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 1391 transitions, 41750 flow [2022-12-05 18:43:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1391 transitions, 41253 flow, removed 111 selfloop flow, removed 8 redundant places. [2022-12-05 18:43:55,438 INFO L231 Difference]: Finished difference. Result has 634 places, 1202 transitions, 36542 flow [2022-12-05 18:43:55,439 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=34326, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=36542, PETRI_PLACES=634, PETRI_TRANSITIONS=1202} [2022-12-05 18:43:55,439 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 481 predicate places. [2022-12-05 18:43:55,439 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 1202 transitions, 36542 flow [2022-12-05 18:43:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:55,440 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:55,440 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-05 18:43:55,440 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:43:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 230941016, now seen corresponding path program 20 times [2022-12-05 18:43:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065351226] [2022-12-05 18:43:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:56,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:56,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065351226] [2022-12-05 18:43:56,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065351226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:56,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:56,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:43:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418054937] [2022-12-05 18:43:56,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:56,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:43:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:43:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:43:56,484 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:43:56,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1202 transitions, 36542 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:56,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:56,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:43:56,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:05,396 INFO L130 PetriNetUnfolder]: 4858/15970 cut-off events. [2022-12-05 18:44:05,396 INFO L131 PetriNetUnfolder]: For 401062/401198 co-relation queries the response was YES. [2022-12-05 18:44:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99612 conditions, 15970 events. 4858/15970 cut-off events. For 401062/401198 co-relation queries the response was YES. Maximal size of possible extension queue 969. Compared 190702 event pairs, 1547 based on Foata normal form. 83/15864 useless extension candidates. Maximal degree in co-relation 99402. Up to 4713 conditions per place. [2022-12-05 18:44:05,658 INFO L137 encePairwiseOnDemand]: 137/165 looper letters, 781 selfloop transitions, 553 changer transitions 0/1382 dead transitions. [2022-12-05 18:44:05,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 1382 transitions, 42352 flow [2022-12-05 18:44:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 18:44:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 18:44:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1987 transitions. [2022-12-05 18:44:05,661 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44601571268237933 [2022-12-05 18:44:05,661 INFO L175 Difference]: Start difference. First operand has 634 places, 1202 transitions, 36542 flow. Second operand 27 states and 1987 transitions. [2022-12-05 18:44:05,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 1382 transitions, 42352 flow [2022-12-05 18:44:09,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 1382 transitions, 41845 flow, removed 124 selfloop flow, removed 15 redundant places. [2022-12-05 18:44:09,247 INFO L231 Difference]: Finished difference. Result has 653 places, 1235 transitions, 38935 flow [2022-12-05 18:44:09,248 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=36043, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=38935, PETRI_PLACES=653, PETRI_TRANSITIONS=1235} [2022-12-05 18:44:09,249 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 500 predicate places. [2022-12-05 18:44:09,249 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 1235 transitions, 38935 flow [2022-12-05 18:44:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:09,249 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:09,250 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-05 18:44:09,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:44:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1232122842, now seen corresponding path program 21 times [2022-12-05 18:44:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525450403] [2022-12-05 18:44:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:10,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:10,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525450403] [2022-12-05 18:44:10,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525450403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:10,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:10,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:44:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535019987] [2022-12-05 18:44:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:10,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:44:10,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:44:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:44:10,231 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:44:10,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 1235 transitions, 38935 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:10,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:10,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:44:10,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:19,010 INFO L130 PetriNetUnfolder]: 4855/16086 cut-off events. [2022-12-05 18:44:19,015 INFO L131 PetriNetUnfolder]: For 430848/430978 co-relation queries the response was YES. [2022-12-05 18:44:19,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101863 conditions, 16086 events. 4855/16086 cut-off events. For 430848/430978 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 192764 event pairs, 2046 based on Foata normal form. 83/15902 useless extension candidates. Maximal degree in co-relation 101646. Up to 4713 conditions per place. [2022-12-05 18:44:19,320 INFO L137 encePairwiseOnDemand]: 137/165 looper letters, 875 selfloop transitions, 495 changer transitions 0/1418 dead transitions. [2022-12-05 18:44:19,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 1418 transitions, 45000 flow [2022-12-05 18:44:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 18:44:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 18:44:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1990 transitions. [2022-12-05 18:44:19,322 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44668911335578004 [2022-12-05 18:44:19,322 INFO L175 Difference]: Start difference. First operand has 653 places, 1235 transitions, 38935 flow. Second operand 27 states and 1990 transitions. [2022-12-05 18:44:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 1418 transitions, 45000 flow [2022-12-05 18:44:22,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 1418 transitions, 44492 flow, removed 136 selfloop flow, removed 12 redundant places. [2022-12-05 18:44:22,878 INFO L231 Difference]: Finished difference. Result has 676 places, 1267 transitions, 41229 flow [2022-12-05 18:44:22,880 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=38443, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=41229, PETRI_PLACES=676, PETRI_TRANSITIONS=1267} [2022-12-05 18:44:22,880 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 523 predicate places. [2022-12-05 18:44:22,880 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 1267 transitions, 41229 flow [2022-12-05 18:44:22,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:22,881 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:22,881 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:22,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-05 18:44:22,881 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:44:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash -717521558, now seen corresponding path program 22 times [2022-12-05 18:44:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:22,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514877321] [2022-12-05 18:44:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514877321] [2022-12-05 18:44:24,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514877321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:24,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:24,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-05 18:44:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365312226] [2022-12-05 18:44:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 18:44:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 18:44:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-12-05 18:44:24,094 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 165 [2022-12-05 18:44:24,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 1267 transitions, 41229 flow. Second operand has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:24,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:24,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 165 [2022-12-05 18:44:24,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:33,903 INFO L130 PetriNetUnfolder]: 4852/16095 cut-off events. [2022-12-05 18:44:33,903 INFO L131 PetriNetUnfolder]: For 451236/451323 co-relation queries the response was YES. [2022-12-05 18:44:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103361 conditions, 16095 events. 4852/16095 cut-off events. For 451236/451323 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 193228 event pairs, 2194 based on Foata normal form. 51/15881 useless extension candidates. Maximal degree in co-relation 103135. Up to 4713 conditions per place. [2022-12-05 18:44:34,199 INFO L137 encePairwiseOnDemand]: 135/165 looper letters, 919 selfloop transitions, 461 changer transitions 0/1427 dead transitions. [2022-12-05 18:44:34,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 1427 transitions, 47193 flow [2022-12-05 18:44:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:44:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:44:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2125 transitions. [2022-12-05 18:44:34,201 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2022-12-05 18:44:34,201 INFO L175 Difference]: Start difference. First operand has 676 places, 1267 transitions, 41229 flow. Second operand 30 states and 2125 transitions. [2022-12-05 18:44:34,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 1427 transitions, 47193 flow [2022-12-05 18:44:37,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 1427 transitions, 46674 flow, removed 166 selfloop flow, removed 14 redundant places. [2022-12-05 18:44:37,768 INFO L231 Difference]: Finished difference. Result has 701 places, 1304 transitions, 43542 flow [2022-12-05 18:44:37,770 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=40711, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=43542, PETRI_PLACES=701, PETRI_TRANSITIONS=1304} [2022-12-05 18:44:37,770 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 548 predicate places. [2022-12-05 18:44:37,770 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 1304 transitions, 43542 flow [2022-12-05 18:44:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:37,771 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:37,771 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-05 18:44:37,771 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:44:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1508332418, now seen corresponding path program 23 times [2022-12-05 18:44:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:37,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290749707] [2022-12-05 18:44:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:38,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290749707] [2022-12-05 18:44:38,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290749707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:38,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:38,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:44:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976801663] [2022-12-05 18:44:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:38,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:44:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:44:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:44:38,693 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:44:38,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 1304 transitions, 43542 flow. Second operand has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:38,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:38,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:44:38,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:48,265 INFO L130 PetriNetUnfolder]: 4849/16162 cut-off events. [2022-12-05 18:44:48,265 INFO L131 PetriNetUnfolder]: For 473027/473157 co-relation queries the response was YES. [2022-12-05 18:44:48,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104652 conditions, 16162 events. 4849/16162 cut-off events. For 473027/473157 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 193783 event pairs, 2039 based on Foata normal form. 83/15991 useless extension candidates. Maximal degree in co-relation 104416. Up to 4713 conditions per place. [2022-12-05 18:44:48,766 INFO L137 encePairwiseOnDemand]: 140/165 looper letters, 880 selfloop transitions, 518 changer transitions 0/1446 dead transitions. [2022-12-05 18:44:48,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 1446 transitions, 49106 flow [2022-12-05 18:44:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-05 18:44:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-05 18:44:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1815 transitions. [2022-12-05 18:44:48,768 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44 [2022-12-05 18:44:48,768 INFO L175 Difference]: Start difference. First operand has 701 places, 1304 transitions, 43542 flow. Second operand 25 states and 1815 transitions. [2022-12-05 18:44:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 1446 transitions, 49106 flow [2022-12-05 18:44:53,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 1446 transitions, 48633 flow, removed 172 selfloop flow, removed 14 redundant places. [2022-12-05 18:44:53,058 INFO L231 Difference]: Finished difference. Result has 721 places, 1341 transitions, 45882 flow [2022-12-05 18:44:53,059 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=43071, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=45882, PETRI_PLACES=721, PETRI_TRANSITIONS=1341} [2022-12-05 18:44:53,060 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 568 predicate places. [2022-12-05 18:44:53,060 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1341 transitions, 45882 flow [2022-12-05 18:44:53,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:53,060 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:53,060 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:53,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-05 18:44:53,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:44:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1265003420, now seen corresponding path program 24 times [2022-12-05 18:44:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:53,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538696339] [2022-12-05 18:44:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:53,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:53,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538696339] [2022-12-05 18:44:53,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538696339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:53,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:53,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 18:44:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214256610] [2022-12-05 18:44:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:53,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 18:44:53,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 18:44:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-12-05 18:44:53,908 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:44:53,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1341 transitions, 45882 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:53,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:53,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:44:53,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:45:03,483 INFO L130 PetriNetUnfolder]: 4843/16265 cut-off events. [2022-12-05 18:45:03,483 INFO L131 PetriNetUnfolder]: For 512983/513043 co-relation queries the response was YES. [2022-12-05 18:45:03,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106917 conditions, 16265 events. 4843/16265 cut-off events. For 512983/513043 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 195836 event pairs, 2202 based on Foata normal form. 39/16028 useless extension candidates. Maximal degree in co-relation 106671. Up to 4713 conditions per place. [2022-12-05 18:45:03,845 INFO L137 encePairwiseOnDemand]: 141/165 looper letters, 978 selfloop transitions, 501 changer transitions 0/1527 dead transitions. [2022-12-05 18:45:03,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 1527 transitions, 53093 flow [2022-12-05 18:45:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:45:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:45:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1560 transitions. [2022-12-05 18:45:03,847 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2022-12-05 18:45:03,847 INFO L175 Difference]: Start difference. First operand has 721 places, 1341 transitions, 45882 flow. Second operand 21 states and 1560 transitions. [2022-12-05 18:45:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 1527 transitions, 53093 flow [2022-12-05 18:45:08,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 1527 transitions, 52549 flow, removed 165 selfloop flow, removed 9 redundant places. [2022-12-05 18:45:08,490 INFO L231 Difference]: Finished difference. Result has 740 places, 1385 transitions, 48590 flow [2022-12-05 18:45:08,491 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=45338, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=48590, PETRI_PLACES=740, PETRI_TRANSITIONS=1385} [2022-12-05 18:45:08,491 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 587 predicate places. [2022-12-05 18:45:08,491 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 1385 transitions, 48590 flow [2022-12-05 18:45:08,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:45:08,492 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:45:08,492 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:45:08,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-05 18:45:08,492 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:45:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:45:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash -719249818, now seen corresponding path program 25 times [2022-12-05 18:45:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:45:08,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256081904] [2022-12-05 18:45:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:45:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:45:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:45:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:45:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:45:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256081904] [2022-12-05 18:45:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256081904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:45:09,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:45:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-05 18:45:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550712890] [2022-12-05 18:45:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:45:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 18:45:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:45:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 18:45:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-12-05 18:45:09,625 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 165 [2022-12-05 18:45:09,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 1385 transitions, 48590 flow. Second operand has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:45:09,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:45:09,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 165 [2022-12-05 18:45:09,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:45:19,574 INFO L130 PetriNetUnfolder]: 4843/16263 cut-off events. [2022-12-05 18:45:19,574 INFO L131 PetriNetUnfolder]: For 530635/530695 co-relation queries the response was YES. [2022-12-05 18:45:19,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107763 conditions, 16263 events. 4843/16263 cut-off events. For 530635/530695 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 195809 event pairs, 2149 based on Foata normal form. 39/16029 useless extension candidates. Maximal degree in co-relation 107508. Up to 4713 conditions per place. [2022-12-05 18:45:19,915 INFO L137 encePairwiseOnDemand]: 135/165 looper letters, 973 selfloop transitions, 511 changer transitions 0/1531 dead transitions. [2022-12-05 18:45:19,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 1531 transitions, 54125 flow [2022-12-05 18:45:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:45:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:45:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2121 transitions. [2022-12-05 18:45:19,917 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42848484848484847 [2022-12-05 18:45:19,917 INFO L175 Difference]: Start difference. First operand has 740 places, 1385 transitions, 48590 flow. Second operand 30 states and 2121 transitions. [2022-12-05 18:45:19,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 1531 transitions, 54125 flow [2022-12-05 18:45:24,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 1531 transitions, 53421 flow, removed 160 selfloop flow, removed 8 redundant places. [2022-12-05 18:45:24,555 INFO L231 Difference]: Finished difference. Result has 767 places, 1402 transitions, 49486 flow [2022-12-05 18:45:24,557 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=47886, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=49486, PETRI_PLACES=767, PETRI_TRANSITIONS=1402} [2022-12-05 18:45:24,557 INFO L294 CegarLoopForPetriNet]: 153 programPoint places, 614 predicate places. [2022-12-05 18:45:24,557 INFO L495 AbstractCegarLoop]: Abstraction has has 767 places, 1402 transitions, 49486 flow [2022-12-05 18:45:24,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:45:24,557 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:45:24,558 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:45:24,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-05 18:45:24,558 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 18:45:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:45:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash 746042166, now seen corresponding path program 26 times [2022-12-05 18:45:24,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:45:24,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101857005] [2022-12-05 18:45:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:45:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:45:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:45:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:45:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:45:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101857005] [2022-12-05 18:45:25,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101857005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:45:25,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:45:25,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-05 18:45:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504687870] [2022-12-05 18:45:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:45:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-05 18:45:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:45:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-05 18:45:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-12-05 18:45:25,516 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2022-12-05 18:45:25,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 1402 transitions, 49486 flow. Second operand has 20 states, 20 states have (on average 69.05) internal successors, (1381), 20 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:45:25,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:45:25,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2022-12-05 18:45:25,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:45:35,753 INFO L130 PetriNetUnfolder]: 4843/16374 cut-off events. [2022-12-05 18:45:35,753 INFO L131 PetriNetUnfolder]: For 558435/558483 co-relation queries the response was YES. [2022-12-05 18:45:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108853 conditions, 16374 events. 4843/16374 cut-off events. For 558435/558483 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 196153 event pairs, 2352 based on Foata normal form. 35/16127 useless extension candidates. Maximal degree in co-relation 108592. Up to 5584 conditions per place. [2022-12-05 18:45:36,164 INFO L137 encePairwiseOnDemand]: 139/165 looper letters, 940 selfloop transitions, 630 changer transitions 0/1618 dead transitions. [2022-12-05 18:45:36,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 1618 transitions, 57501 flow [2022-12-05 18:45:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 18:45:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 18:45:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1955 transitions. [2022-12-05 18:45:36,166 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4388327721661055 [2022-12-05 18:45:36,166 INFO L175 Difference]: Start difference. First operand has 767 places, 1402 transitions, 49486 flow. Second operand 27 states and 1955 transitions. [2022-12-05 18:45:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 1618 transitions, 57501 flow