/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:20:42,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:20:42,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:20:42,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:20:42,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:20:42,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:20:42,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:20:42,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:20:42,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:20:42,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:20:42,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:20:42,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:20:42,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:20:42,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:20:42,180 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:20:42,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:20:42,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:20:42,189 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:20:42,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:20:42,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:20:42,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:20:42,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:20:42,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:20:42,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:20:42,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:20:42,193 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:20:42,194 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:20:42,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:20:42,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:20:42,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:20:42,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:20:42,360 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:20:42,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i [2023-08-04 04:20:43,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:20:43,536 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:20:43,536 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i [2023-08-04 04:20:43,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d107df40e/e93e6717aa344c6aab47345a62ff33d9/FLAGa39c6d691 [2023-08-04 04:20:43,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d107df40e/e93e6717aa344c6aab47345a62ff33d9 [2023-08-04 04:20:43,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:20:43,565 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:20:43,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:20:43,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:20:43,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:20:43,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd5f964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43, skipping insertion in model container [2023-08-04 04:20:43,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,597 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:20:43,792 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[30781,30794] [2023-08-04 04:20:43,796 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31129,31142] [2023-08-04 04:20:43,797 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31392,31405] [2023-08-04 04:20:43,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:20:43,818 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:20:43,845 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-04 04:20:43,846 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-04 04:20:43,855 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[30781,30794] [2023-08-04 04:20:43,856 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31129,31142] [2023-08-04 04:20:43,865 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31392,31405] [2023-08-04 04:20:43,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:20:43,891 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:20:43,891 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:20:43,895 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:20:43,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43 WrapperNode [2023-08-04 04:20:43,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:20:43,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:20:43,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:20:43,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:20:43,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,945 INFO L138 Inliner]: procedures = 178, calls = 36, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 148 [2023-08-04 04:20:43,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:20:43,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:20:43,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:20:43,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:20:43,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:20:43,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:20:43,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:20:43,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:20:43,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (1/1) ... [2023-08-04 04:20:43,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:20:44,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:20:44,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:20:44,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:20:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:20:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:20:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:20:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:20:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:20:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:20:44,042 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:20:44,144 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:20:44,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:20:44,308 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:20:44,358 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:20:44,358 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 04:20:44,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:20:44 BoogieIcfgContainer [2023-08-04 04:20:44,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:20:44,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:20:44,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:20:44,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:20:44,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:20:43" (1/3) ... [2023-08-04 04:20:44,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c1fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:20:44, skipping insertion in model container [2023-08-04 04:20:44,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:20:43" (2/3) ... [2023-08-04 04:20:44,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c1fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:20:44, skipping insertion in model container [2023-08-04 04:20:44,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:20:44" (3/3) ... [2023-08-04 04:20:44,364 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_08_rand_cas_bound2.i [2023-08-04 04:20:44,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:20:44,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:20:44,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 04:20:44,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:20:44,440 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:20:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,504 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-04 04:20:44,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-04 04:20:44,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,515 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:20:44,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:44,547 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-04 04:20:44,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:44,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-04 04:20:44,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 2784 [2023-08-04 04:20:47,553 INFO L134 LiptonReduction]: Checked pairs total: 2931 [2023-08-04 04:20:47,554 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 04:20:47,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:20:47,567 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=true, 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;@f2a2b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:20:47,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:20:47,570 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:20:47,570 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-04 04:20:47,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:47,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:47,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:20:47,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:20:47,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 612035195, now seen corresponding path program 1 times [2023-08-04 04:20:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601030921] [2023-08-04 04:20:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601030921] [2023-08-04 04:20:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601030921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:47,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:20:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466352138] [2023-08-04 04:20:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:20:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:20:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:20:47,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-04 04:20:47,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 22 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:47,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:47,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-04 04:20:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:47,933 INFO L124 PetriNetUnfolderBase]: 43/92 cut-off events. [2023-08-04 04:20:47,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:47,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 92 events. 43/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 251 event pairs, 24 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 168. Up to 79 conditions per place. [2023-08-04 04:20:47,936 INFO L140 encePairwiseOnDemand]: 247/252 looper letters, 18 selfloop transitions, 2 changer transitions 3/24 dead transitions. [2023-08-04 04:20:47,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 24 transitions, 99 flow [2023-08-04 04:20:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:20:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:20:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-04 04:20:47,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2023-08-04 04:20:47,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-04 04:20:47,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-04 04:20:47,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:47,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-04 04:20:47,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:47,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:47,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:47,964 INFO L175 Difference]: Start difference. First operand has 19 places, 22 transitions, 49 flow. Second operand 3 states and 321 transitions. [2023-08-04 04:20:47,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 24 transitions, 99 flow [2023-08-04 04:20:47,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:20:47,967 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 53 flow [2023-08-04 04:20:47,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-08-04 04:20:47,970 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-04 04:20:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 53 flow [2023-08-04 04:20:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:47,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:47,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:20:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:20:47,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:20:47,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1793228026, now seen corresponding path program 1 times [2023-08-04 04:20:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670287780] [2023-08-04 04:20:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670287780] [2023-08-04 04:20:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670287780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:20:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334944499] [2023-08-04 04:20:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:20:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:20:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:20:48,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 252 [2023-08-04 04:20:48,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:48,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 252 [2023-08-04 04:20:48,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:48,073 INFO L124 PetriNetUnfolderBase]: 7/22 cut-off events. [2023-08-04 04:20:48,073 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:20:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 22 events. 7/22 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 40. Up to 14 conditions per place. [2023-08-04 04:20:48,076 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 7 selfloop transitions, 2 changer transitions 2/12 dead transitions. [2023-08-04 04:20:48,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 61 flow [2023-08-04 04:20:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:20:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:20:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-04 04:20:48,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2023-08-04 04:20:48,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-04 04:20:48,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-04 04:20:48,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:48,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-04 04:20:48,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,085 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 53 flow. Second operand 3 states and 312 transitions. [2023-08-04 04:20:48,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 61 flow [2023-08-04 04:20:48,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:20:48,088 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 35 flow [2023-08-04 04:20:48,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-08-04 04:20:48,089 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -4 predicate places. [2023-08-04 04:20:48,089 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 35 flow [2023-08-04 04:20:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:48,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-04 04:20:48,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:20:48,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:20:48,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash -245100969, now seen corresponding path program 1 times [2023-08-04 04:20:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358822272] [2023-08-04 04:20:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358822272] [2023-08-04 04:20:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358822272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:48,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:48,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:48,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833922678] [2023-08-04 04:20:48,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:48,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:20:48,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:48,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:20:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:20:48,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 252 [2023-08-04 04:20:48,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:48,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 252 [2023-08-04 04:20:48,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:48,306 INFO L124 PetriNetUnfolderBase]: 5/16 cut-off events. [2023-08-04 04:20:48,307 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:20:48,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 16 events. 5/16 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 30. Up to 9 conditions per place. [2023-08-04 04:20:48,307 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-08-04 04:20:48,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 49 flow [2023-08-04 04:20:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:20:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:20:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-04 04:20:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38591269841269843 [2023-08-04 04:20:48,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-04 04:20:48,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-04 04:20:48,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:48,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-04 04:20:48,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,311 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 35 flow. Second operand 4 states and 389 transitions. [2023-08-04 04:20:48,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 49 flow [2023-08-04 04:20:48,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 9 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:20:48,312 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-08-04 04:20:48,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-08-04 04:20:48,312 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -5 predicate places. [2023-08-04 04:20:48,312 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-08-04 04:20:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:48,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-04 04:20:48,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-04 04:20:48,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-04 04:20:48,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-04 04:20:48,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-04 04:20:48,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-04 04:20:48,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:20:48,315 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 04:20:48,317 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:20:48,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,328 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-04 04:20:48,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:48,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-04 04:20:48,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:20:48,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-04 04:20:48,353 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-04 04:20:48,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-04 04:20:48,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 2784 [2023-08-04 04:20:51,070 INFO L134 LiptonReduction]: Checked pairs total: 2938 [2023-08-04 04:20:51,070 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 04:20:51,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:20:51,072 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=true, 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;@f2a2b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:20:51,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:20:51,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:20:51,074 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-08-04 04:20:51,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:20:51,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:51,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:20:51,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:20:51,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1437185481, now seen corresponding path program 1 times [2023-08-04 04:20:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524251186] [2023-08-04 04:20:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:20:51,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:20:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:20:51,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:20:51,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:20:51,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:20:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:20:51,101 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:20:51,102 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:20:51,102 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:20:51,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:20:51,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:20:51,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,182 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-04 04:20:51,183 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:20:51,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-04 04:20:51,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:20:51,186 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,186 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:20:51,205 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-04 04:20:51,205 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:20:51,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-04 04:20:51,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-08-04 04:20:54,993 INFO L134 LiptonReduction]: Checked pairs total: 27072 [2023-08-04 04:20:54,993 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-04 04:20:54,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:20:54,995 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=true, 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;@f2a2b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:20:54,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-04 04:20:54,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:20:54,997 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-08-04 04:20:54,997 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:20:54,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:54,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:54,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:54,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1963450974, now seen corresponding path program 1 times [2023-08-04 04:20:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714150342] [2023-08-04 04:20:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714150342] [2023-08-04 04:20:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714150342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:55,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765452231] [2023-08-04 04:20:55,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:55,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:20:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:20:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:20:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 422 [2023-08-04 04:20:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:55,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 422 [2023-08-04 04:20:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:55,405 INFO L124 PetriNetUnfolderBase]: 2492/3873 cut-off events. [2023-08-04 04:20:55,405 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-04 04:20:55,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 3873 events. 2492/3873 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21239 event pairs, 1372 based on Foata normal form. 0/2728 useless extension candidates. Maximal degree in co-relation 3665. Up to 2493 conditions per place. [2023-08-04 04:20:55,421 INFO L140 encePairwiseOnDemand]: 411/422 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-08-04 04:20:55,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 398 flow [2023-08-04 04:20:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:20:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:20:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 770 transitions. [2023-08-04 04:20:55,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561611374407583 [2023-08-04 04:20:55,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 770 transitions. [2023-08-04 04:20:55,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 770 transitions. [2023-08-04 04:20:55,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:55,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 770 transitions. [2023-08-04 04:20:55,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,428 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 120 flow. Second operand 4 states and 770 transitions. [2023-08-04 04:20:55,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 398 flow [2023-08-04 04:20:55,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 97 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:20:55,429 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 140 flow [2023-08-04 04:20:55,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2023-08-04 04:20:55,430 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-04 04:20:55,430 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 140 flow [2023-08-04 04:20:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:55,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:20:55,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:55,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1910294018, now seen corresponding path program 1 times [2023-08-04 04:20:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:55,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524241534] [2023-08-04 04:20:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:55,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:55,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524241534] [2023-08-04 04:20:55,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524241534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:55,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:55,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:55,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401387372] [2023-08-04 04:20:55,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:55,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:20:55,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:55,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:20:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:20:55,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 422 [2023-08-04 04:20:55,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:55,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 422 [2023-08-04 04:20:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:55,788 INFO L124 PetriNetUnfolderBase]: 1814/2819 cut-off events. [2023-08-04 04:20:55,788 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-08-04 04:20:55,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6419 conditions, 2819 events. 1814/2819 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14959 event pairs, 217 based on Foata normal form. 72/2651 useless extension candidates. Maximal degree in co-relation 4931. Up to 1553 conditions per place. [2023-08-04 04:20:55,800 INFO L140 encePairwiseOnDemand]: 412/422 looper letters, 102 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2023-08-04 04:20:55,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 115 transitions, 532 flow [2023-08-04 04:20:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:20:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:20:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 930 transitions. [2023-08-04 04:20:55,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44075829383886256 [2023-08-04 04:20:55,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 930 transitions. [2023-08-04 04:20:55,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 930 transitions. [2023-08-04 04:20:55,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:55,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 930 transitions. [2023-08-04 04:20:55,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,810 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 140 flow. Second operand 5 states and 930 transitions. [2023-08-04 04:20:55,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 115 transitions, 532 flow [2023-08-04 04:20:55,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 115 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:20:55,816 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 197 flow [2023-08-04 04:20:55,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-04 04:20:55,818 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-08-04 04:20:55,818 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 197 flow [2023-08-04 04:20:55,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:55,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:55,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:20:55,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:55,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1623659306, now seen corresponding path program 1 times [2023-08-04 04:20:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:55,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765698038] [2023-08-04 04:20:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765698038] [2023-08-04 04:20:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765698038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:55,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:55,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:20:55,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83632199] [2023-08-04 04:20:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:55,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:20:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:20:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:20:56,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 422 [2023-08-04 04:20:56,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:56,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 422 [2023-08-04 04:20:56,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:56,365 INFO L124 PetriNetUnfolderBase]: 1652/2721 cut-off events. [2023-08-04 04:20:56,365 INFO L125 PetriNetUnfolderBase]: For 799/855 co-relation queries the response was YES. [2023-08-04 04:20:56,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6387 conditions, 2721 events. 1652/2721 cut-off events. For 799/855 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15774 event pairs, 350 based on Foata normal form. 228/2720 useless extension candidates. Maximal degree in co-relation 5316. Up to 560 conditions per place. [2023-08-04 04:20:56,378 INFO L140 encePairwiseOnDemand]: 411/422 looper letters, 166 selfloop transitions, 25 changer transitions 22/223 dead transitions. [2023-08-04 04:20:56,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 223 transitions, 1078 flow [2023-08-04 04:20:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:20:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:20:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1520 transitions. [2023-08-04 04:20:56,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45023696682464454 [2023-08-04 04:20:56,381 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1520 transitions. [2023-08-04 04:20:56,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1520 transitions. [2023-08-04 04:20:56,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:56,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1520 transitions. [2023-08-04 04:20:56,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 422.0) internal successors, (3798), 9 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,388 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 422.0) internal successors, (3798), 9 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,388 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 197 flow. Second operand 8 states and 1520 transitions. [2023-08-04 04:20:56,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 223 transitions, 1078 flow [2023-08-04 04:20:56,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 223 transitions, 1078 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:20:56,392 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 422 flow [2023-08-04 04:20:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=422, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2023-08-04 04:20:56,392 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-08-04 04:20:56,392 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 422 flow [2023-08-04 04:20:56,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:20:56,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:56,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1062503273, now seen corresponding path program 1 times [2023-08-04 04:20:56,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345540474] [2023-08-04 04:20:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:56,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:56,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345540474] [2023-08-04 04:20:56,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345540474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:56,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:56,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10742557] [2023-08-04 04:20:56,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:56,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:20:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:20:56,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:20:56,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 422 [2023-08-04 04:20:56,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:56,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 422 [2023-08-04 04:20:56,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:56,771 INFO L124 PetriNetUnfolderBase]: 1629/2715 cut-off events. [2023-08-04 04:20:56,772 INFO L125 PetriNetUnfolderBase]: For 5024/5081 co-relation queries the response was YES. [2023-08-04 04:20:56,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8534 conditions, 2715 events. 1629/2715 cut-off events. For 5024/5081 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15348 event pairs, 689 based on Foata normal form. 125/2643 useless extension candidates. Maximal degree in co-relation 6629. Up to 1324 conditions per place. [2023-08-04 04:20:56,785 INFO L140 encePairwiseOnDemand]: 415/422 looper letters, 95 selfloop transitions, 9 changer transitions 14/128 dead transitions. [2023-08-04 04:20:56,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 128 transitions, 922 flow [2023-08-04 04:20:56,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:20:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:20:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 740 transitions. [2023-08-04 04:20:56,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43838862559241704 [2023-08-04 04:20:56,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 740 transitions. [2023-08-04 04:20:56,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 740 transitions. [2023-08-04 04:20:56,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:56,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 740 transitions. [2023-08-04 04:20:56,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,790 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 422 flow. Second operand 4 states and 740 transitions. [2023-08-04 04:20:56,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 128 transitions, 922 flow [2023-08-04 04:20:56,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 128 transitions, 922 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:20:56,799 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 454 flow [2023-08-04 04:20:56,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-08-04 04:20:56,800 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2023-08-04 04:20:56,800 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 454 flow [2023-08-04 04:20:56,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:56,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:56,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:20:56,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:56,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1401398376, now seen corresponding path program 1 times [2023-08-04 04:20:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586528155] [2023-08-04 04:20:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586528155] [2023-08-04 04:20:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586528155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:56,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:20:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229213522] [2023-08-04 04:20:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:56,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:20:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:20:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:20:56,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 422 [2023-08-04 04:20:56,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:56,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:56,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 422 [2023-08-04 04:20:56,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:57,058 INFO L124 PetriNetUnfolderBase]: 1499/2507 cut-off events. [2023-08-04 04:20:57,059 INFO L125 PetriNetUnfolderBase]: For 4965/5022 co-relation queries the response was YES. [2023-08-04 04:20:57,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8333 conditions, 2507 events. 1499/2507 cut-off events. For 4965/5022 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13870 event pairs, 734 based on Foata normal form. 57/2410 useless extension candidates. Maximal degree in co-relation 6360. Up to 1518 conditions per place. [2023-08-04 04:20:57,072 INFO L140 encePairwiseOnDemand]: 420/422 looper letters, 87 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-04 04:20:57,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 740 flow [2023-08-04 04:20:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:20:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:20:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-04 04:20:57,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4399684044233807 [2023-08-04 04:20:57,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-04 04:20:57,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-04 04:20:57,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:57,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-04 04:20:57,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,077 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 454 flow. Second operand 3 states and 557 transitions. [2023-08-04 04:20:57,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 740 flow [2023-08-04 04:20:57,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 727 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:20:57,087 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 446 flow [2023-08-04 04:20:57,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-08-04 04:20:57,088 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2023-08-04 04:20:57,088 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 446 flow [2023-08-04 04:20:57,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:57,088 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:57,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:20:57,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:57,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2142519975, now seen corresponding path program 2 times [2023-08-04 04:20:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079569625] [2023-08-04 04:20:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:57,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079569625] [2023-08-04 04:20:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079569625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:20:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926163376] [2023-08-04 04:20:57,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:20:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:20:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:20:57,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:20:57,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:20:57,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:20:57,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:20:57,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:20:57,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:20:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:20:57,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:20:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926163376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:20:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:20:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409228621] [2023-08-04 04:20:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:20:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:20:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:20:57,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 422 [2023-08-04 04:20:57,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:57,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 422 [2023-08-04 04:20:57,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:57,468 INFO L124 PetriNetUnfolderBase]: 1035/1692 cut-off events. [2023-08-04 04:20:57,468 INFO L125 PetriNetUnfolderBase]: For 3417/3465 co-relation queries the response was YES. [2023-08-04 04:20:57,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 1692 events. 1035/1692 cut-off events. For 3417/3465 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8288 event pairs, 147 based on Foata normal form. 231/1820 useless extension candidates. Maximal degree in co-relation 4304. Up to 1217 conditions per place. [2023-08-04 04:20:57,476 INFO L140 encePairwiseOnDemand]: 418/422 looper letters, 112 selfloop transitions, 3 changer transitions 19/140 dead transitions. [2023-08-04 04:20:57,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 1028 flow [2023-08-04 04:20:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:20:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:20:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-08-04 04:20:57,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43981042654028435 [2023-08-04 04:20:57,479 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-08-04 04:20:57,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-08-04 04:20:57,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:57,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-08-04 04:20:57,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,483 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 446 flow. Second operand 5 states and 928 transitions. [2023-08-04 04:20:57,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 1028 flow [2023-08-04 04:20:57,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 1015 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:20:57,488 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 395 flow [2023-08-04 04:20:57,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-04 04:20:57,489 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2023-08-04 04:20:57,489 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 395 flow [2023-08-04 04:20:57,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:57,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:57,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:20:57,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-04 04:20:57,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:57,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1975689710, now seen corresponding path program 1 times [2023-08-04 04:20:57,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:57,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087219034] [2023-08-04 04:20:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087219034] [2023-08-04 04:20:57,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-08-04 04:20:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870989014] [2023-08-04 04:20:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:57,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:20:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:20:57,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:20:57,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:20:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:57,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:20:57,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:20:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:57,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:20:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870989014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897881685] [2023-08-04 04:20:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:20:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:20:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:20:57,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 422 [2023-08-04 04:20:57,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:57,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:57,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 422 [2023-08-04 04:20:57,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:57,991 INFO L124 PetriNetUnfolderBase]: 774/1266 cut-off events. [2023-08-04 04:20:57,991 INFO L125 PetriNetUnfolderBase]: For 3169/3187 co-relation queries the response was YES. [2023-08-04 04:20:57,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4539 conditions, 1266 events. 774/1266 cut-off events. For 3169/3187 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5611 event pairs, 257 based on Foata normal form. 48/1254 useless extension candidates. Maximal degree in co-relation 3698. Up to 1021 conditions per place. [2023-08-04 04:20:57,999 INFO L140 encePairwiseOnDemand]: 417/422 looper letters, 75 selfloop transitions, 3 changer transitions 16/97 dead transitions. [2023-08-04 04:20:57,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 749 flow [2023-08-04 04:20:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:20:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:20:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 879 transitions. [2023-08-04 04:20:58,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165876777251185 [2023-08-04 04:20:58,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 879 transitions. [2023-08-04 04:20:58,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 879 transitions. [2023-08-04 04:20:58,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:58,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 879 transitions. [2023-08-04 04:20:58,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,006 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 395 flow. Second operand 5 states and 879 transitions. [2023-08-04 04:20:58,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 749 flow [2023-08-04 04:20:58,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 97 transitions, 723 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-04 04:20:58,012 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 390 flow [2023-08-04 04:20:58,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-08-04 04:20:58,013 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 35 predicate places. [2023-08-04 04:20:58,013 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 390 flow [2023-08-04 04:20:58,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:58,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:58,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:20:58,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-04 04:20:58,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:58,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -250397373, now seen corresponding path program 1 times [2023-08-04 04:20:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:58,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707797021] [2023-08-04 04:20:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707797021] [2023-08-04 04:20:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707797021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:20:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925133349] [2023-08-04 04:20:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:20:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:20:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:20:58,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 422 [2023-08-04 04:20:58,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:58,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 422 [2023-08-04 04:20:58,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:58,362 INFO L124 PetriNetUnfolderBase]: 627/1039 cut-off events. [2023-08-04 04:20:58,363 INFO L125 PetriNetUnfolderBase]: For 2298/2310 co-relation queries the response was YES. [2023-08-04 04:20:58,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3631 conditions, 1039 events. 627/1039 cut-off events. For 2298/2310 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4409 event pairs, 326 based on Foata normal form. 12/999 useless extension candidates. Maximal degree in co-relation 3114. Up to 718 conditions per place. [2023-08-04 04:20:58,370 INFO L140 encePairwiseOnDemand]: 420/422 looper letters, 71 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-08-04 04:20:58,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 576 flow [2023-08-04 04:20:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:20:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:20:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-04 04:20:58,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344391785150079 [2023-08-04 04:20:58,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-04 04:20:58,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-04 04:20:58,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:58,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-04 04:20:58,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,375 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 390 flow. Second operand 3 states and 550 transitions. [2023-08-04 04:20:58,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 576 flow [2023-08-04 04:20:58,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 566 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-04 04:20:58,378 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 385 flow [2023-08-04 04:20:58,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-04 04:20:58,379 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-08-04 04:20:58,379 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 385 flow [2023-08-04 04:20:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:58,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:58,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:20:58,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:58,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash -836023062, now seen corresponding path program 1 times [2023-08-04 04:20:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62752491] [2023-08-04 04:20:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:20:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62752491] [2023-08-04 04:20:58,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62752491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:58,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:20:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211189789] [2023-08-04 04:20:58,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:58,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:20:58,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:20:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:20:58,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 422 [2023-08-04 04:20:58,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:58,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 422 [2023-08-04 04:20:58,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:58,863 INFO L124 PetriNetUnfolderBase]: 693/1139 cut-off events. [2023-08-04 04:20:58,863 INFO L125 PetriNetUnfolderBase]: For 2338/2354 co-relation queries the response was YES. [2023-08-04 04:20:58,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1139 events. 693/1139 cut-off events. For 2338/2354 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5059 event pairs, 146 based on Foata normal form. 37/1131 useless extension candidates. Maximal degree in co-relation 3729. Up to 443 conditions per place. [2023-08-04 04:20:58,868 INFO L140 encePairwiseOnDemand]: 413/422 looper letters, 89 selfloop transitions, 27 changer transitions 2/122 dead transitions. [2023-08-04 04:20:58,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 871 flow [2023-08-04 04:20:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:20:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:20:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1055 transitions. [2023-08-04 04:20:58,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-04 04:20:58,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1055 transitions. [2023-08-04 04:20:58,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1055 transitions. [2023-08-04 04:20:58,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:58,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1055 transitions. [2023-08-04 04:20:58,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.83333333333334) internal successors, (1055), 6 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,875 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 385 flow. Second operand 6 states and 1055 transitions. [2023-08-04 04:20:58,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 871 flow [2023-08-04 04:20:58,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 871 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:20:58,879 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 546 flow [2023-08-04 04:20:58,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-08-04 04:20:58,880 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-08-04 04:20:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 546 flow [2023-08-04 04:20:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:58,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:20:58,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:58,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1180292741, now seen corresponding path program 1 times [2023-08-04 04:20:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072641160] [2023-08-04 04:20:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:59,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:59,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072641160] [2023-08-04 04:20:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072641160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:59,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:20:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707869432] [2023-08-04 04:20:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:59,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:20:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:20:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:20:59,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 422 [2023-08-04 04:20:59,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:59,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 422 [2023-08-04 04:20:59,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:59,272 INFO L124 PetriNetUnfolderBase]: 640/1056 cut-off events. [2023-08-04 04:20:59,272 INFO L125 PetriNetUnfolderBase]: For 2947/2963 co-relation queries the response was YES. [2023-08-04 04:20:59,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 1056 events. 640/1056 cut-off events. For 2947/2963 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4593 event pairs, 129 based on Foata normal form. 37/1063 useless extension candidates. Maximal degree in co-relation 3879. Up to 435 conditions per place. [2023-08-04 04:20:59,277 INFO L140 encePairwiseOnDemand]: 413/422 looper letters, 91 selfloop transitions, 27 changer transitions 1/123 dead transitions. [2023-08-04 04:20:59,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 1025 flow [2023-08-04 04:20:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:20:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:20:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1052 transitions. [2023-08-04 04:20:59,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154818325434439 [2023-08-04 04:20:59,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1052 transitions. [2023-08-04 04:20:59,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1052 transitions. [2023-08-04 04:20:59,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:59,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1052 transitions. [2023-08-04 04:20:59,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,284 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 546 flow. Second operand 6 states and 1052 transitions. [2023-08-04 04:20:59,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 1025 flow [2023-08-04 04:20:59,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 1019 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:20:59,291 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 657 flow [2023-08-04 04:20:59,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=657, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-08-04 04:20:59,291 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-08-04 04:20:59,291 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 657 flow [2023-08-04 04:20:59,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:59,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:59,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:20:59,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:59,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1227134705, now seen corresponding path program 1 times [2023-08-04 04:20:59,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:59,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101022297] [2023-08-04 04:20:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101022297] [2023-08-04 04:20:59,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-08-04 04:20:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751883936] [2023-08-04 04:20:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:59,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:20:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:20:59,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:20:59,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:20:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:20:59,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:20:59,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:20:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:20:59,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:20:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751883936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159690667] [2023-08-04 04:20:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:20:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:20:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:20:59,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 422 [2023-08-04 04:20:59,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 657 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:59,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 422 [2023-08-04 04:20:59,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:20:59,576 INFO L124 PetriNetUnfolderBase]: 695/1148 cut-off events. [2023-08-04 04:20:59,576 INFO L125 PetriNetUnfolderBase]: For 4007/4022 co-relation queries the response was YES. [2023-08-04 04:20:59,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 1148 events. 695/1148 cut-off events. For 4007/4022 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5111 event pairs, 124 based on Foata normal form. 35/1162 useless extension candidates. Maximal degree in co-relation 4515. Up to 736 conditions per place. [2023-08-04 04:20:59,582 INFO L140 encePairwiseOnDemand]: 415/422 looper letters, 92 selfloop transitions, 5 changer transitions 8/108 dead transitions. [2023-08-04 04:20:59,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 108 transitions, 1055 flow [2023-08-04 04:20:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:20:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:20:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 877 transitions. [2023-08-04 04:20:59,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4156398104265403 [2023-08-04 04:20:59,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 877 transitions. [2023-08-04 04:20:59,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 877 transitions. [2023-08-04 04:20:59,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:20:59,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 877 transitions. [2023-08-04 04:20:59,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,592 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 657 flow. Second operand 5 states and 877 transitions. [2023-08-04 04:20:59,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 108 transitions, 1055 flow [2023-08-04 04:20:59,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 108 transitions, 1048 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:20:59,600 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 670 flow [2023-08-04 04:20:59,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-08-04 04:20:59,600 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-08-04 04:20:59,600 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 670 flow [2023-08-04 04:20:59,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:20:59,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:20:59,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:20:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:20:59,832 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:20:59,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:20:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 723414215, now seen corresponding path program 2 times [2023-08-04 04:20:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:20:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946375679] [2023-08-04 04:20:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:20:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:20:59,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:20:59,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250916604] [2023-08-04 04:20:59,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:20:59,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:20:59,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:20:59,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:20:59,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:20:59,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-04 04:20:59,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:20:59,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:20:59,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:20:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:20:59,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:20:59,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:20:59,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946375679] [2023-08-04 04:20:59,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:20:59,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250916604] [2023-08-04 04:20:59,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250916604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:20:59,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:20:59,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:20:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898523186] [2023-08-04 04:20:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:20:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:20:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:20:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:20:59,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 422 [2023-08-04 04:20:59,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:20:59,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:20:59,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 422 [2023-08-04 04:20:59,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:00,031 INFO L124 PetriNetUnfolderBase]: 376/644 cut-off events. [2023-08-04 04:21:00,032 INFO L125 PetriNetUnfolderBase]: For 2654/2654 co-relation queries the response was YES. [2023-08-04 04:21:00,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 644 events. 376/644 cut-off events. For 2654/2654 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2503 event pairs, 116 based on Foata normal form. 22/650 useless extension candidates. Maximal degree in co-relation 2674. Up to 459 conditions per place. [2023-08-04 04:21:00,035 INFO L140 encePairwiseOnDemand]: 416/422 looper letters, 85 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2023-08-04 04:21:00,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 97 transitions, 984 flow [2023-08-04 04:21:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-04 04:21:00,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423380726698262 [2023-08-04 04:21:00,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-04 04:21:00,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-04 04:21:00,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:00,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-04 04:21:00,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,039 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 670 flow. Second operand 3 states and 560 transitions. [2023-08-04 04:21:00,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 97 transitions, 984 flow [2023-08-04 04:21:00,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 948 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-04 04:21:00,045 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 646 flow [2023-08-04 04:21:00,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-08-04 04:21:00,046 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2023-08-04 04:21:00,046 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 646 flow [2023-08-04 04:21:00,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:00,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:00,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 04:21:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 04:21:00,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:21:00,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -259252479, now seen corresponding path program 1 times [2023-08-04 04:21:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184916175] [2023-08-04 04:21:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:00,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:21:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571635617] [2023-08-04 04:21:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:00,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:00,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:00,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:00,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:21:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:00,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 04:21:00,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:00,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:00,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:00,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184916175] [2023-08-04 04:21:00,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:21:00,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571635617] [2023-08-04 04:21:00,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571635617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:00,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:00,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:21:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70989084] [2023-08-04 04:21:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:00,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:21:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:21:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:21:00,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 422 [2023-08-04 04:21:00,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:00,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 422 [2023-08-04 04:21:00,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:00,623 INFO L124 PetriNetUnfolderBase]: 366/619 cut-off events. [2023-08-04 04:21:00,623 INFO L125 PetriNetUnfolderBase]: For 2512/2515 co-relation queries the response was YES. [2023-08-04 04:21:00,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 619 events. 366/619 cut-off events. For 2512/2515 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2327 event pairs, 129 based on Foata normal form. 9/607 useless extension candidates. Maximal degree in co-relation 2604. Up to 383 conditions per place. [2023-08-04 04:21:00,626 INFO L140 encePairwiseOnDemand]: 417/422 looper letters, 37 selfloop transitions, 0 changer transitions 64/104 dead transitions. [2023-08-04 04:21:00,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 1048 flow [2023-08-04 04:21:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:21:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:21:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1032 transitions. [2023-08-04 04:21:00,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075829383886256 [2023-08-04 04:21:00,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1032 transitions. [2023-08-04 04:21:00,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1032 transitions. [2023-08-04 04:21:00,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:00,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1032 transitions. [2023-08-04 04:21:00,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,633 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 646 flow. Second operand 6 states and 1032 transitions. [2023-08-04 04:21:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 1048 flow [2023-08-04 04:21:00,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 104 transitions, 1042 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:21:00,639 INFO L231 Difference]: Finished difference. Result has 93 places, 40 transitions, 287 flow [2023-08-04 04:21:00,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=93, PETRI_TRANSITIONS=40} [2023-08-04 04:21:00,639 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-08-04 04:21:00,639 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 40 transitions, 287 flow [2023-08-04 04:21:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:00,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:00,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 04:21:00,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 04:21:00,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:21:00,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1811324592, now seen corresponding path program 1 times [2023-08-04 04:21:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380804414] [2023-08-04 04:21:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:00,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:21:00,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914186460] [2023-08-04 04:21:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:00,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:00,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 04:21:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:00,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 04:21:00,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:01,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:01,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380804414] [2023-08-04 04:21:01,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:21:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914186460] [2023-08-04 04:21:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914186460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:01,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:01,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:21:01,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903313640] [2023-08-04 04:21:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:01,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:21:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 422 [2023-08-04 04:21:01,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 40 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:01,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:01,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 422 [2023-08-04 04:21:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:01,136 INFO L124 PetriNetUnfolderBase]: 136/234 cut-off events. [2023-08-04 04:21:01,136 INFO L125 PetriNetUnfolderBase]: For 947/947 co-relation queries the response was YES. [2023-08-04 04:21:01,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 234 events. 136/234 cut-off events. For 947/947 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 590 event pairs, 35 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 1012. Up to 114 conditions per place. [2023-08-04 04:21:01,137 INFO L140 encePairwiseOnDemand]: 418/422 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2023-08-04 04:21:01,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 57 transitions, 557 flow [2023-08-04 04:21:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-08-04 04:21:01,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104265402843602 [2023-08-04 04:21:01,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-08-04 04:21:01,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-08-04 04:21:01,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:01,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-08-04 04:21:01,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:01,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:01,144 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:01,145 INFO L175 Difference]: Start difference. First operand has 93 places, 40 transitions, 287 flow. Second operand 5 states and 866 transitions. [2023-08-04 04:21:01,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 57 transitions, 557 flow [2023-08-04 04:21:01,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 498 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-04 04:21:01,147 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-04 04:21:01,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-04 04:21:01,148 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-08-04 04:21:01,148 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-04 04:21:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:01,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-04 04:21:01,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-04 04:21:01,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 04:21:01,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-04 04:21:01,355 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:01,355 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:21:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,373 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-04 04:21:01,373 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:01,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-04 04:21:01,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:21:01,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-04 04:21:01,390 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-04 04:21:01,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:01,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-04 04:21:01,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-08-04 04:21:05,157 INFO L134 LiptonReduction]: Checked pairs total: 27592 [2023-08-04 04:21:05,157 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-08-04 04:21:05,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:21:05,159 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=true, 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;@f2a2b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:21:05,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:21:05,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:21:05,163 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2023-08-04 04:21:05,163 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:05,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:05,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:21:05,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:21:05,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -791406963, now seen corresponding path program 1 times [2023-08-04 04:21:05,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300415331] [2023-08-04 04:21:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300415331] [2023-08-04 04:21:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300415331] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244556371] [2023-08-04 04:21:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:05,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:05,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:05,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 04:21:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:05,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:21:05,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:05,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244556371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:05,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:21:05,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:21:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403993385] [2023-08-04 04:21:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:05,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:05,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:05,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:21:05,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2023-08-04 04:21:05,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:05,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:05,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2023-08-04 04:21:05,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:05,556 INFO L124 PetriNetUnfolderBase]: 1645/2531 cut-off events. [2023-08-04 04:21:05,556 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 04:21:05,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 2531 events. 1645/2531 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12547 event pairs, 0 based on Foata normal form. 0/1914 useless extension candidates. Maximal degree in co-relation 470. Up to 1764 conditions per place. [2023-08-04 04:21:05,560 INFO L140 encePairwiseOnDemand]: 412/420 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2023-08-04 04:21:05,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 110 transitions, 438 flow [2023-08-04 04:21:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2023-08-04 04:21:05,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552380952380952 [2023-08-04 04:21:05,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2023-08-04 04:21:05,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2023-08-04 04:21:05,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:05,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2023-08-04 04:21:05,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:05,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:05,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:05,566 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 120 flow. Second operand 5 states and 956 transitions. [2023-08-04 04:21:05,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 110 transitions, 438 flow [2023-08-04 04:21:05,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 110 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:21:05,567 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-04 04:21:05,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-04 04:21:05,567 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-08-04 04:21:05,567 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-04 04:21:05,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:21:05,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:21:05,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 04:21:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:05,772 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:21:05,773 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:21:05,773 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:21:05,773 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:21:05,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:21:05 BasicIcfg [2023-08-04 04:21:05,776 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:21:05,777 INFO L158 Benchmark]: Toolchain (without parser) took 22211.62ms. Allocated memory was 486.5MB in the beginning and 702.5MB in the end (delta: 216.0MB). Free memory was 443.8MB in the beginning and 253.5MB in the end (delta: 190.3MB). Peak memory consumption was 408.3MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,777 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory was 305.6MB in the beginning and 305.5MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:21:05,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.16ms. Allocated memory is still 486.5MB. Free memory was 443.7MB in the beginning and 422.9MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.65ms. Allocated memory is still 486.5MB. Free memory was 422.9MB in the beginning and 420.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,792 INFO L158 Benchmark]: Boogie Preprocessor took 31.63ms. Allocated memory is still 486.5MB. Free memory was 420.6MB in the beginning and 418.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,792 INFO L158 Benchmark]: RCFGBuilder took 381.80ms. Allocated memory is still 486.5MB. Free memory was 418.7MB in the beginning and 446.2MB in the end (delta: -27.5MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,793 INFO L158 Benchmark]: TraceAbstraction took 21415.50ms. Allocated memory was 486.5MB in the beginning and 702.5MB in the end (delta: 216.0MB). Free memory was 445.8MB in the beginning and 253.5MB in the end (delta: 192.3MB). Peak memory consumption was 408.3MB. Max. memory is 16.0GB. [2023-08-04 04:21:05,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory was 305.6MB in the beginning and 305.5MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 330.16ms. Allocated memory is still 486.5MB. Free memory was 443.7MB in the beginning and 422.9MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.65ms. Allocated memory is still 486.5MB. Free memory was 422.9MB in the beginning and 420.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.63ms. Allocated memory is still 486.5MB. Free memory was 420.6MB in the beginning and 418.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 381.80ms. Allocated memory is still 486.5MB. Free memory was 418.7MB in the beginning and 446.2MB in the end (delta: -27.5MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. * TraceAbstraction took 21415.50ms. Allocated memory was 486.5MB in the beginning and 702.5MB in the end (delta: 216.0MB). Free memory was 445.8MB in the beginning and 253.5MB in the end (delta: 192.3MB). Peak memory consumption was 408.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 110 PlacesBefore, 19 PlacesAfterwards, 120 TransitionsBefore, 22 TransitionsAfterwards, 2784 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 132 TotalNumberOfCompositions, 2931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2401, independent: 2355, independent conditional: 0, independent unconditional: 2355, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1495, independent: 1474, independent conditional: 0, independent unconditional: 1474, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2401, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 1495, unknown conditional: 0, unknown unconditional: 1495] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 110 PlacesBefore, 19 PlacesAfterwards, 120 TransitionsBefore, 22 TransitionsAfterwards, 2784 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 87 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 7 ChoiceCompositions, 133 TotalNumberOfCompositions, 2938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2400, independent: 2354, independent conditional: 0, independent unconditional: 2354, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1491, independent: 1473, independent conditional: 0, independent unconditional: 1473, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2400, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 1491, unknown conditional: 0, unknown unconditional: 1491] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 188 PlacesBefore, 47 PlacesAfterwards, 208 TransitionsBefore, 54 TransitionsAfterwards, 20880 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 141 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 45 ConcurrentYvCompositions, 13 ChoiceCompositions, 214 TotalNumberOfCompositions, 27072 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19758, independent: 19514, independent conditional: 0, independent unconditional: 19514, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11527, independent: 11466, independent conditional: 0, independent unconditional: 11466, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19758, independent: 8048, independent conditional: 0, independent unconditional: 8048, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 11527, unknown conditional: 0, unknown unconditional: 11527] , Statistics on independence cache: Total cache size (in pairs): 365, Positive cache size: 340, Positive conditional cache size: 0, Positive unconditional cache size: 340, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 188 PlacesBefore, 47 PlacesAfterwards, 208 TransitionsBefore, 54 TransitionsAfterwards, 20880 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 143 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 41 ConcurrentYvCompositions, 13 ChoiceCompositions, 212 TotalNumberOfCompositions, 27592 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19546, independent: 19295, independent conditional: 0, independent unconditional: 19295, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11393, independent: 11333, independent conditional: 0, independent unconditional: 11333, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19546, independent: 7962, independent conditional: 0, independent unconditional: 7962, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 11393, unknown conditional: 0, unknown unconditional: 11393] , Statistics on independence cache: Total cache size (in pairs): 343, Positive cache size: 318, Positive conditional cache size: 0, Positive unconditional cache size: 318, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 732]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 748]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 759]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 184 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=1, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 260 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.2s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1184 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 962 mSDsluCounter, 253 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2540 IncrementalHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 74 mSDtfsCounter, 2540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=670occurred in iteration=11, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 289 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 548 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1177 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 28/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 184 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 260 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:21:05,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...